contrib/byacc/aclocal.m4

   1 dnl $Id: aclocal.m4,v 1.37 2014/10/04 16:40:06 tom Exp $
   2 dnl Macros for byacc configure script (Thomas E. Dickey)
   3 dnl ---------------------------------------------------------------------------
   4 dnl Copyright 2004-2013,2014 Thomas E. Dickey
   5 dnl
   6 dnl Permission is hereby granted, free of charge, to any person obtaining a
   7 dnl copy of this software and associated documentation files (the
   8 dnl "Software"), to deal in the Software without restriction, including
   9 dnl without limitation the rights to use, copy, modify, merge, publish,
  10 dnl distribute, distribute with modifications, sublicense, and/or sell
  11 dnl copies of the Software, and to permit persons to whom the Software is
  12 dnl furnished to do so, subject to the following conditions:
  13 dnl
  14 dnl The above copyright notice and this permission notice shall be included
  15 dnl in all copies or portions of the Software.
  16 dnl
  17 dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18 dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  19 dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  20 dnl IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  21 dnl DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  22 dnl OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR
  23 dnl THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  24 dnl
  25 dnl Except as contained in this notice, the name(s) of the above copyright
  26 dnl holders shall not be used in advertising or otherwise to promote the
  27 dnl sale, use or other dealings in this Software without prior written
  28 dnl authorization.
  29 dnl ---------------------------------------------------------------------------
  30 dnl ---------------------------------------------------------------------------
  31 dnl CF_ACVERSION_CHECK version: 5 updated: 2014/06/04 19:11:49
  32 dnl ------------------
  33 dnl Conditionally generate script according to whether we're using a given autoconf.
  34 dnl
  35 dnl $1 = version to compare against
  36 dnl $2 = code to use if AC_ACVERSION is at least as high as $1.
  37 dnl $3 = code to use if AC_ACVERSION is older than $1.
  38 define([CF_ACVERSION_CHECK],
  39 [
  40 ifdef([AC_ACVERSION], ,[ifdef([AC_AUTOCONF_VERSION],[m4_copy([AC_AUTOCONF_VERSION],[AC_ACVERSION])],[m4_copy([m4_PACKAGE_VERSION],[AC_ACVERSION])])])dnl
  41 ifdef([m4_version_compare],
  42 [m4_if(m4_version_compare(m4_defn([AC_ACVERSION]), [$1]), -1, [$3], [$2])],
  43 [CF_ACVERSION_COMPARE(
  44 AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])),
  45 AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)), AC_ACVERSION, [$2], [$3])])])dnl
  46 dnl ---------------------------------------------------------------------------
  47 dnl CF_ACVERSION_COMPARE version: 3 updated: 2012/10/03 18:39:53
  48 dnl --------------------
  49 dnl CF_ACVERSION_COMPARE(MAJOR1, MINOR1, TERNARY1,
  50 dnl                      MAJOR2, MINOR2, TERNARY2,
  51 dnl                      PRINTABLE2, not FOUND, FOUND)
  52 define([CF_ACVERSION_COMPARE],
  53 [ifelse(builtin([eval], [$2 < $5]), 1,
  54 [ifelse([$8], , ,[$8])],
  55 [ifelse([$9], , ,[$9])])])dnl
  56 dnl ---------------------------------------------------------------------------
  57 dnl CF_ADD_CFLAGS version: 11 updated: 2014/07/22 05:32:57
  58 dnl -------------
  59 dnl Copy non-preprocessor flags to $CFLAGS, preprocessor flags to $CPPFLAGS
  60 dnl The second parameter if given makes this macro verbose.
  61 dnl
  62 dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
  63 dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
  64 dnl confused by the quotes (which require backslashes to keep them usable).
  65 AC_DEFUN([CF_ADD_CFLAGS],
  66 [
  67 cf_fix_cppflags=no
  68 cf_new_cflags=
  69 cf_new_cppflags=
  70 cf_new_extra_cppflags=
  71
  72 for cf_add_cflags in $1
  73 do
  74 case $cf_fix_cppflags in
  75 no)
  76         case $cf_add_cflags in #(vi
  77         -undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C) #(vi
  78                 case $cf_add_cflags in
  79                 -D*)
  80                         cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^-D[[^=]]*='\''\"[[^"]]*//'`
  81
  82                         test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
  83                                 && test -z "${cf_tst_cflags}" \
  84                                 && cf_fix_cppflags=yes
  85
  86                         if test $cf_fix_cppflags = yes ; then
  87                                 cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
  88                                 continue
  89                         elif test "${cf_tst_cflags}" = "\"'" ; then
  90                                 cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
  91                                 continue
  92                         fi
  93                         ;;
  94                 esac
  95                 case "$CPPFLAGS" in
  96                 *$cf_add_cflags) #(vi
  97                         ;;
  98                 *) #(vi
  99                         case $cf_add_cflags in #(vi
 100                         -D*)
 101                                 cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
 102                                 CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,$cf_tst_cppflags)
 103                                 ;;
 104                         esac
 105                         cf_new_cppflags="$cf_new_cppflags $cf_add_cflags"
 106                         ;;
 107                 esac
 108                 ;;
 109         *)
 110                 cf_new_cflags="$cf_new_cflags $cf_add_cflags"
 111                 ;;
 112         esac
 113         ;;
 114 yes)
 115         cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
 116
 117         cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^[[^"]]*"'\''//'`
 118
 119         test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
 120                 && test -z "${cf_tst_cflags}" \
 121                 && cf_fix_cppflags=no
 122         ;;
 123 esac
 124 done
 125
 126 if test -n "$cf_new_cflags" ; then
 127         ifelse([$2],,,[CF_VERBOSE(add to \$CFLAGS $cf_new_cflags)])
 128         CFLAGS="$CFLAGS $cf_new_cflags"
 129 fi
 130
 131 if test -n "$cf_new_cppflags" ; then
 132         ifelse([$2],,,[CF_VERBOSE(add to \$CPPFLAGS $cf_new_cppflags)])
 133         CPPFLAGS="$CPPFLAGS $cf_new_cppflags"
 134 fi
 135
 136 if test -n "$cf_new_extra_cppflags" ; then
 137         ifelse([$2],,,[CF_VERBOSE(add to \$EXTRA_CPPFLAGS $cf_new_extra_cppflags)])
 138         EXTRA_CPPFLAGS="$cf_new_extra_cppflags $EXTRA_CPPFLAGS"
 139 fi
 140
 141 AC_SUBST(EXTRA_CPPFLAGS)
 142
 143 ])dnl
 144 dnl ---------------------------------------------------------------------------
 145 dnl CF_ARG_DISABLE version: 3 updated: 1999/03/30 17:24:31
 146 dnl --------------
 147 dnl Allow user to disable a normally-on option.
 148 AC_DEFUN([CF_ARG_DISABLE],
 149 [CF_ARG_OPTION($1,[$2],[$3],[$4],yes)])dnl
 150 dnl ---------------------------------------------------------------------------
 151 dnl CF_ARG_OPTION version: 4 updated: 2010/05/26 05:38:42
 152 dnl -------------
 153 dnl Restricted form of AC_ARG_ENABLE that ensures user doesn't give bogus
 154 dnl values.
 155 dnl
 156 dnl Parameters:
 157 dnl $1 = option name
 158 dnl $2 = help-string
 159 dnl $3 = action to perform if option is not default
 160 dnl $4 = action if perform if option is default
 161 dnl $5 = default option value (either 'yes' or 'no')
 162 AC_DEFUN([CF_ARG_OPTION],
 163 [AC_ARG_ENABLE([$1],[$2],[test "$enableval" != ifelse([$5],no,yes,no) && enableval=ifelse([$5],no,no,yes)
 164   if test "$enableval" != "$5" ; then
 165 ifelse([$3],,[    :]dnl
 166 ,[    $3]) ifelse([$4],,,[
 167   else
 168     $4])
 169   fi],[enableval=$5 ifelse([$4],,,[
 170   $4
 171 ])dnl
 172   ])])dnl
 173 dnl ---------------------------------------------------------------------------
 174 dnl CF_CC_ENV_FLAGS version: 1 updated: 2012/10/03 05:25:49
 175 dnl ---------------
 176 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
 177 dnl into CC.  This will not help with broken scripts that wrap the compiler with
 178 dnl options, but eliminates a more common category of user confusion.
 179 AC_DEFUN([CF_CC_ENV_FLAGS],
 180 [
 181 # This should have been defined by AC_PROG_CC
 182 : ${CC:=cc}
 183
 184 AC_MSG_CHECKING(\$CC variable)
 185 case "$CC" in #(vi
 186 *[[\ \  ]]-[[IUD]]*)
 187         AC_MSG_RESULT(broken)
 188         AC_MSG_WARN(your environment misuses the CC variable to hold CFLAGS/CPPFLAGS options)
 189         # humor him...
 190         cf_flags=`echo "$CC" | sed -e 's/^[[^   ]]*[[   ]]//'`
 191         CC=`echo "$CC" | sed -e 's/[[   ]].*//'`
 192         CF_ADD_CFLAGS($cf_flags)
 193         ;;
 194 *)
 195         AC_MSG_RESULT(ok)
 196         ;;
 197 esac
 198 ])dnl
 199 dnl ---------------------------------------------------------------------------
 200 dnl CF_CHECK_CACHE version: 12 updated: 2012/10/02 20:55:03
 201 dnl --------------
 202 dnl Check if we're accidentally using a cache from a different machine.
 203 dnl Derive the system name, as a check for reusing the autoconf cache.
 204 dnl
 205 dnl If we've packaged config.guess and config.sub, run that (since it does a
 206 dnl better job than uname).  Normally we'll use AC_CANONICAL_HOST, but allow
 207 dnl an extra parameter that we may override, e.g., for AC_CANONICAL_SYSTEM
 208 dnl which is useful in cross-compiles.
 209 dnl
 210 dnl Note: we would use $ac_config_sub, but that is one of the places where
 211 dnl autoconf 2.5x broke compatibility with autoconf 2.13
 212 AC_DEFUN([CF_CHECK_CACHE],
 213 [
 214 if test -f $srcdir/config.guess || test -f $ac_aux_dir/config.guess ; then
 215         ifelse([$1],,[AC_CANONICAL_HOST],[$1])
 216         system_name="$host_os"
 217 else
 218         system_name="`(uname -s -r) 2>/dev/null`"
 219         if test -z "$system_name" ; then
 220                 system_name="`(hostname) 2>/dev/null`"
 221         fi
 222 fi
 223 test -n "$system_name" && AC_DEFINE_UNQUOTED(SYSTEM_NAME,"$system_name",[Define to the system name.])
 224 AC_CACHE_VAL(cf_cv_system_name,[cf_cv_system_name="$system_name"])
 225
 226 test -z "$system_name" && system_name="$cf_cv_system_name"
 227 test -n "$cf_cv_system_name" && AC_MSG_RESULT(Configuring for $cf_cv_system_name)
 228
 229 if test ".$system_name" != ".$cf_cv_system_name" ; then
 230         AC_MSG_RESULT(Cached system name ($system_name) does not agree with actual ($cf_cv_system_name))
 231         AC_MSG_ERROR("Please remove config.cache and try again.")
 232 fi
 233 ])dnl
 234 dnl ---------------------------------------------------------------------------
 235 dnl CF_CLANG_COMPILER version: 2 updated: 2013/11/19 19:23:35
 236 dnl -----------------
 237 dnl Check if the given compiler is really clang.  clang's C driver defines
 238 dnl __GNUC__ (fooling the configure script into setting $GCC to yes) but does
 239 dnl not ignore some gcc options.
 240 dnl
 241 dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
 242 dnl ensure that it is not mistaken for gcc/g++.  It is normally invoked from
 243 dnl the wrappers for gcc and g++ warnings.
 244 dnl
 245 dnl $1 = GCC (default) or GXX
 246 dnl $2 = CLANG_COMPILER (default)
 247 dnl $3 = CFLAGS (default) or CXXFLAGS
 248 AC_DEFUN([CF_CLANG_COMPILER],[
 249 ifelse([$2],,CLANG_COMPILER,[$2])=no
 250
 251 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
 252         AC_MSG_CHECKING(if this is really Clang ifelse([$1],GXX,C++,C) compiler)
 253         cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
 254         ifelse([$3],,CFLAGS,[$3])="$ifelse([$3],,CFLAGS,[$3]) -Qunused-arguments"
 255         AC_TRY_COMPILE([],[
 256 #ifdef __clang__
 257 #else
 258 make an error
 259 #endif
 260 ],[ifelse([$2],,CLANG_COMPILER,[$2])=yes
 261 cf_save_CFLAGS="$cf_save_CFLAGS -Qunused-arguments"
 262 ],[])
 263         ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
 264         AC_MSG_RESULT($ifelse([$2],,CLANG_COMPILER,[$2]))
 265 fi
 266 ])
 267 dnl ---------------------------------------------------------------------------
 268 dnl CF_DISABLE_ECHO version: 12 updated: 2012/10/06 16:30:28
 269 dnl ---------------
 270 dnl You can always use "make -n" to see the actual options, but it's hard to
 271 dnl pick out/analyze warning messages when the compile-line is long.
 272 dnl
 273 dnl Sets:
 274 dnl     ECHO_LT - symbol to control if libtool is verbose
 275 dnl     ECHO_LD - symbol to prefix "cc -o" lines
 276 dnl     RULE_CC - symbol to put before implicit "cc -c" lines (e.g., .c.o)
 277 dnl     SHOW_CC - symbol to put before explicit "cc -c" lines
 278 dnl     ECHO_CC - symbol to put before any "cc" line
 279 dnl
 280 AC_DEFUN([CF_DISABLE_ECHO],[
 281 AC_MSG_CHECKING(if you want to see long compiling messages)
 282 CF_ARG_DISABLE(echo,
 283         [  --disable-echo          do not display "compiling" commands],
 284         [
 285     ECHO_LT='--silent'
 286     ECHO_LD='@echo linking [$]@;'
 287     RULE_CC='@echo compiling [$]<'
 288     SHOW_CC='@echo compiling [$]@'
 289     ECHO_CC='@'
 290 ],[
 291     ECHO_LT=''
 292     ECHO_LD=''
 293     RULE_CC=''
 294     SHOW_CC=''
 295     ECHO_CC=''
 296 ])
 297 AC_MSG_RESULT($enableval)
 298 AC_SUBST(ECHO_LT)
 299 AC_SUBST(ECHO_LD)
 300 AC_SUBST(RULE_CC)
 301 AC_SUBST(SHOW_CC)
 302 AC_SUBST(ECHO_CC)
 303 ])dnl
 304 dnl ---------------------------------------------------------------------------
 305 dnl CF_DISABLE_LEAKS version: 7 updated: 2012/10/02 20:55:03
 306 dnl ----------------
 307 dnl Combine no-leak checks with the libraries or tools that are used for the
 308 dnl checks.
 309 AC_DEFUN([CF_DISABLE_LEAKS],[
 310
 311 AC_REQUIRE([CF_WITH_DMALLOC])
 312 AC_REQUIRE([CF_WITH_DBMALLOC])
 313 AC_REQUIRE([CF_WITH_VALGRIND])
 314
 315 AC_MSG_CHECKING(if you want to perform memory-leak testing)
 316 AC_ARG_ENABLE(leaks,
 317         [  --disable-leaks         test: free permanent memory, analyze leaks],
 318         [if test "x$enableval" = xno; then with_no_leaks=yes; else with_no_leaks=no; fi],
 319         : ${with_no_leaks:=no})
 320 AC_MSG_RESULT($with_no_leaks)
 321
 322 if test "$with_no_leaks" = yes ; then
 323         AC_DEFINE(NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
 324         AC_DEFINE(YY_NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
 325 fi
 326 ])dnl
 327 dnl ---------------------------------------------------------------------------
 328 dnl CF_GCC_ATTRIBUTES version: 16 updated: 2012/10/02 20:55:03
 329 dnl -----------------
 330 dnl Test for availability of useful gcc __attribute__ directives to quiet
 331 dnl compiler warnings.  Though useful, not all are supported -- and contrary
 332 dnl to documentation, unrecognized directives cause older compilers to barf.
 333 AC_DEFUN([CF_GCC_ATTRIBUTES],
 334 [
 335 if test "$GCC" = yes
 336 then
 337 cat > conftest.i <<EOF
 338 #ifndef GCC_PRINTF
 339 #define GCC_PRINTF 0
 340 #endif
 341 #ifndef GCC_SCANF
 342 #define GCC_SCANF 0
 343 #endif
 344 #ifndef GCC_NORETURN
 345 #define GCC_NORETURN /* nothing */
 346 #endif
 347 #ifndef GCC_UNUSED
 348 #define GCC_UNUSED /* nothing */
 349 #endif
 350 EOF
 351 if test "$GCC" = yes
 352 then
 353         AC_CHECKING([for $CC __attribute__ directives])
 354 cat > conftest.$ac_ext <<EOF
 355 #line __oline__ "${as_me:-configure}"
 356 #include "confdefs.h"
 357 #include "conftest.h"
 358 #include "conftest.i"
 359 #if     GCC_PRINTF
 360 #define GCC_PRINTFLIKE(fmt,var) __attribute__((format(printf,fmt,var)))
 361 #else
 362 #define GCC_PRINTFLIKE(fmt,var) /*nothing*/
 363 #endif
 364 #if     GCC_SCANF
 365 #define GCC_SCANFLIKE(fmt,var)  __attribute__((format(scanf,fmt,var)))
 366 #else
 367 #define GCC_SCANFLIKE(fmt,var)  /*nothing*/
 368 #endif
 369 extern void wow(char *,...) GCC_SCANFLIKE(1,2);
 370 extern void oops(char *,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
 371 extern void foo(void) GCC_NORETURN;
 372 int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { return 0; }
 373 EOF
 374         cf_printf_attribute=no
 375         cf_scanf_attribute=no
 376         for cf_attribute in scanf printf unused noreturn
 377         do
 378                 CF_UPPER(cf_ATTRIBUTE,$cf_attribute)
 379                 cf_directive="__attribute__(($cf_attribute))"
 380                 echo "checking for $CC $cf_directive" 1>&AC_FD_CC
 381
 382                 case $cf_attribute in #(vi
 383                 printf) #(vi
 384                         cf_printf_attribute=yes
 385                         cat >conftest.h <<EOF
 386 #define GCC_$cf_ATTRIBUTE 1
 387 EOF
 388                         ;;
 389                 scanf) #(vi
 390                         cf_scanf_attribute=yes
 391                         cat >conftest.h <<EOF
 392 #define GCC_$cf_ATTRIBUTE 1
 393 EOF
 394                         ;;
 395                 *) #(vi
 396                         cat >conftest.h <<EOF
 397 #define GCC_$cf_ATTRIBUTE $cf_directive
 398 EOF
 399                         ;;
 400                 esac
 401
 402                 if AC_TRY_EVAL(ac_compile); then
 403                         test -n "$verbose" && AC_MSG_RESULT(... $cf_attribute)
 404                         cat conftest.h >>confdefs.h
 405                         case $cf_attribute in #(vi
 406                         noreturn) #(vi
 407                                 AC_DEFINE_UNQUOTED(GCC_NORETURN,$cf_directive,[Define to noreturn-attribute for gcc])
 408                                 ;;
 409                         printf) #(vi
 410                                 cf_value='/* nothing */'
 411                                 if test "$cf_printf_attribute" != no ; then
 412                                         cf_value='__attribute__((format(printf,fmt,var)))'
 413                                         AC_DEFINE(GCC_PRINTF,1,[Define to 1 if the compiler supports gcc-like printf attribute.])
 414                                 fi
 415                                 AC_DEFINE_UNQUOTED(GCC_PRINTFLIKE(fmt,var),$cf_value,[Define to printf-attribute for gcc])
 416                                 ;;
 417                         scanf) #(vi
 418                                 cf_value='/* nothing */'
 419                                 if test "$cf_scanf_attribute" != no ; then
 420                                         cf_value='__attribute__((format(scanf,fmt,var)))'
 421                                         AC_DEFINE(GCC_SCANF,1,[Define to 1 if the compiler supports gcc-like scanf attribute.])
 422                                 fi
 423                                 AC_DEFINE_UNQUOTED(GCC_SCANFLIKE(fmt,var),$cf_value,[Define to sscanf-attribute for gcc])
 424                                 ;;
 425                         unused) #(vi
 426                                 AC_DEFINE_UNQUOTED(GCC_UNUSED,$cf_directive,[Define to unused-attribute for gcc])
 427                                 ;;
 428                         esac
 429                 fi
 430         done
 431 else
 432         fgrep define conftest.i >>confdefs.h
 433 fi
 434 rm -rf conftest*
 435 fi
 436 ])dnl
 437 dnl ---------------------------------------------------------------------------
 438 dnl CF_GCC_VERSION version: 7 updated: 2012/10/18 06:46:33
 439 dnl --------------
 440 dnl Find version of gcc
 441 AC_DEFUN([CF_GCC_VERSION],[
 442 AC_REQUIRE([AC_PROG_CC])
 443 GCC_VERSION=none
 444 if test "$GCC" = yes ; then
 445         AC_MSG_CHECKING(version of $CC)
 446         GCC_VERSION="`${CC} --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(GCC[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
 447         test -z "$GCC_VERSION" && GCC_VERSION=unknown
 448         AC_MSG_RESULT($GCC_VERSION)
 449 fi
 450 ])dnl
 451 dnl ---------------------------------------------------------------------------
 452 dnl CF_GCC_WARNINGS version: 31 updated: 2013/11/19 19:23:35
 453 dnl ---------------
 454 dnl Check if the compiler supports useful warning options.  There's a few that
 455 dnl we don't use, simply because they're too noisy:
 456 dnl
 457 dnl     -Wconversion (useful in older versions of gcc, but not in gcc 2.7.x)
 458 dnl     -Wredundant-decls (system headers make this too noisy)
 459 dnl     -Wtraditional (combines too many unrelated messages, only a few useful)
 460 dnl     -Wwrite-strings (too noisy, but should review occasionally).  This
 461 dnl             is enabled for ncurses using "--enable-const".
 462 dnl     -pedantic
 463 dnl
 464 dnl Parameter:
 465 dnl     $1 is an optional list of gcc warning flags that a particular
 466 dnl             application might want to use, e.g., "no-unused" for
 467 dnl             -Wno-unused
 468 dnl Special:
 469 dnl     If $with_ext_const is "yes", add a check for -Wwrite-strings
 470 dnl
 471 AC_DEFUN([CF_GCC_WARNINGS],
 472 [
 473 AC_REQUIRE([CF_GCC_VERSION])
 474 CF_INTEL_COMPILER(GCC,INTEL_COMPILER,CFLAGS)
 475 CF_CLANG_COMPILER(GCC,CLANG_COMPILER,CFLAGS)
 476
 477 cat > conftest.$ac_ext <<EOF
 478 #line __oline__ "${as_me:-configure}"
 479 int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
 480 EOF
 481
 482 if test "$INTEL_COMPILER" = yes
 483 then
 484 # The "-wdXXX" options suppress warnings:
 485 # remark #1419: external declaration in primary source file
 486 # remark #1683: explicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
 487 # remark #1684: conversion from pointer to same-sized integral type (potential portability problem)
 488 # remark #193: zero used for undefined preprocessing identifier
 489 # remark #593: variable "curs_sb_left_arrow" was set but never used
 490 # remark #810: conversion from "int" to "Dimension={unsigned short}" may lose significant bits
 491 # remark #869: parameter "tw" was never referenced
 492 # remark #981: operands are evaluated in unspecified order
 493 # warning #279: controlling expression is constant
 494
 495         AC_CHECKING([for $CC warning options])
 496         cf_save_CFLAGS="$CFLAGS"
 497         EXTRA_CFLAGS="-Wall"
 498         for cf_opt in \
 499                 wd1419 \
 500                 wd1683 \
 501                 wd1684 \
 502                 wd193 \
 503                 wd593 \
 504                 wd279 \
 505                 wd810 \
 506                 wd869 \
 507                 wd981
 508         do
 509                 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
 510                 if AC_TRY_EVAL(ac_compile); then
 511                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
 512                         EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
 513                 fi
 514         done
 515         CFLAGS="$cf_save_CFLAGS"
 516
 517 elif test "$GCC" = yes
 518 then
 519         AC_CHECKING([for $CC warning options])
 520         cf_save_CFLAGS="$CFLAGS"
 521         EXTRA_CFLAGS=
 522         cf_warn_CONST=""
 523         test "$with_ext_const" = yes && cf_warn_CONST="Wwrite-strings"
 524         cf_gcc_warnings="Wignored-qualifiers Wlogical-op Wvarargs"
 525         test "x$CLANG_COMPILER" = xyes && cf_gcc_warnings=
 526         for cf_opt in W Wall \
 527                 Wbad-function-cast \
 528                 Wcast-align \
 529                 Wcast-qual \
 530                 Wdeclaration-after-statement \
 531                 Wextra \
 532                 Winline \
 533                 Wmissing-declarations \
 534                 Wmissing-prototypes \
 535                 Wnested-externs \
 536                 Wpointer-arith \
 537                 Wshadow \
 538                 Wstrict-prototypes \
 539                 Wundef $cf_gcc_warnings $cf_warn_CONST $1
 540         do
 541                 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
 542                 if AC_TRY_EVAL(ac_compile); then
 543                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
 544                         case $cf_opt in #(vi
 545                         Wcast-qual) #(vi
 546                                 CPPFLAGS="$CPPFLAGS -DXTSTRINGDEFINES"
 547                                 ;;
 548                         Winline) #(vi
 549                                 case $GCC_VERSION in
 550                                 [[34]].*)
 551                                         CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
 552                                         continue;;
 553                                 esac
 554                                 ;;
 555                         Wpointer-arith) #(vi
 556                                 case $GCC_VERSION in
 557                                 [[12]].*)
 558                                         CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
 559                                         continue;;
 560                                 esac
 561                                 ;;
 562                         esac
 563                         EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
 564                 fi
 565         done
 566         CFLAGS="$cf_save_CFLAGS"
 567 fi
 568 rm -rf conftest*
 569
 570 AC_SUBST(EXTRA_CFLAGS)
 571 ])dnl
 572 dnl ---------------------------------------------------------------------------
 573 dnl CF_GNU_SOURCE version: 6 updated: 2005/07/09 13:23:07
 574 dnl -------------
 575 dnl Check if we must define _GNU_SOURCE to get a reasonable value for
 576 dnl _XOPEN_SOURCE, upon which many POSIX definitions depend.  This is a defect
 577 dnl (or misfeature) of glibc2, which breaks portability of many applications,
 578 dnl since it is interwoven with GNU extensions.
 579 dnl
 580 dnl Well, yes we could work around it...
 581 AC_DEFUN([CF_GNU_SOURCE],
 582 [
 583 AC_CACHE_CHECK(if we must define _GNU_SOURCE,cf_cv_gnu_source,[
 584 AC_TRY_COMPILE([#include <sys/types.h>],[
 585 #ifndef _XOPEN_SOURCE
 586 make an error
 587 #endif],
 588         [cf_cv_gnu_source=no],
 589         [cf_save="$CPPFLAGS"
 590          CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
 591          AC_TRY_COMPILE([#include <sys/types.h>],[
 592 #ifdef _XOPEN_SOURCE
 593 make an error
 594 #endif],
 595         [cf_cv_gnu_source=no],
 596         [cf_cv_gnu_source=yes])
 597         CPPFLAGS="$cf_save"
 598         ])
 599 ])
 600 test "$cf_cv_gnu_source" = yes && CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
 601 ])dnl
 602 dnl ---------------------------------------------------------------------------
 603 dnl CF_INTEL_COMPILER version: 6 updated: 2014/03/17 13:13:07
 604 dnl -----------------
 605 dnl Check if the given compiler is really the Intel compiler for Linux.  It
 606 dnl tries to imitate gcc, but does not return an error when it finds a mismatch
 607 dnl between prototypes, e.g., as exercised by CF_MISSING_CHECK.
 608 dnl
 609 dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
 610 dnl ensure that it is not mistaken for gcc/g++.  It is normally invoked from
 611 dnl the wrappers for gcc and g++ warnings.
 612 dnl
 613 dnl $1 = GCC (default) or GXX
 614 dnl $2 = INTEL_COMPILER (default) or INTEL_CPLUSPLUS
 615 dnl $3 = CFLAGS (default) or CXXFLAGS
 616 AC_DEFUN([CF_INTEL_COMPILER],[
 617 AC_REQUIRE([AC_CANONICAL_HOST])
 618 ifelse([$2],,INTEL_COMPILER,[$2])=no
 619
 620 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
 621         case $host_os in
 622         linux*|gnu*)
 623                 AC_MSG_CHECKING(if this is really Intel ifelse([$1],GXX,C++,C) compiler)
 624                 cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
 625                 ifelse([$3],,CFLAGS,[$3])="$ifelse([$3],,CFLAGS,[$3]) -no-gcc"
 626                 AC_TRY_COMPILE([],[
 627 #ifdef __INTEL_COMPILER
 628 #else
 629 make an error
 630 #endif
 631 ],[ifelse([$2],,INTEL_COMPILER,[$2])=yes
 632 cf_save_CFLAGS="$cf_save_CFLAGS -we147"
 633 ],[])
 634                 ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
 635                 AC_MSG_RESULT($ifelse([$2],,INTEL_COMPILER,[$2]))
 636                 ;;
 637         esac
 638 fi
 639 ])dnl
 640 dnl ---------------------------------------------------------------------------
 641 dnl CF_MAKE_DOCS version: 3 updated: 2014/01/05 13:21:25
 642 dnl ------------
 643 dnl $1 = name(s) to generate rules for
 644 dnl $2 = suffix of corresponding manpages used as input.
 645 define([CF_MAKE_DOCS],[
 646 test -z "$cf_make_docs" && cf_make_docs=0
 647
 648 cf_output=makefile
 649 test -f "$cf_output" || cf_output=Makefile
 650
 651 if test "$cf_make_docs" = 0
 652 then
 653 cat >>$cf_output <<"CF_EOF"
 654 ################################################################################
 655 .SUFFIXES : .html .$2 .man .ps .pdf .txt
 656
 657 .$2.html :
 658         GROFF_NO_SGR=stupid [$](SHELL) -c "tbl [$]*.$2 | groff -P -o0 -I$*_ -Thtml -man" >[$]@
 659
 660 .$2.ps :
 661         [$](SHELL) -c "tbl [$]*.$2 | groff -man" >[$]@
 662
 663 .$2.txt :
 664         GROFF_NO_SGR=stupid [$](SHELL) -c "tbl [$]*.$2 | nroff -Tascii -man | col -bx" >[$]@
 665
 666 .ps.pdf :
 667         ps2pdf [$]*.ps
 668
 669 CF_EOF
 670         cf_make_docs=1
 671 fi
 672
 673 for cf_name in $1
 674 do
 675 cat >>$cf_output <<CF_EOF
 676 ################################################################################
 677 docs-$cf_name \\
 678 docs :: $cf_name.html \\
 679         $cf_name.pdf \\
 680         $cf_name.ps \\
 681         $cf_name.txt
 682
 683 clean \\
 684 docs-clean ::
 685         rm -f $cf_name.html $cf_name.pdf $cf_name.ps $cf_name.txt
 686
 687 $cf_name.html : $cf_name.\$2
 688 $cf_name.pdf : $cf_name.ps
 689 $cf_name.ps : $cf_name.\$2
 690 $cf_name.txt : $cf_name.\$2
 691 CF_EOF
 692 done
 693 ])dnl
 694 dnl ---------------------------------------------------------------------------
 695 dnl CF_MAKE_TAGS version: 6 updated: 2010/10/23 15:52:32
 696 dnl ------------
 697 dnl Generate tags/TAGS targets for makefiles.  Do not generate TAGS if we have
 698 dnl a monocase filesystem.
 699 AC_DEFUN([CF_MAKE_TAGS],[
 700 AC_REQUIRE([CF_MIXEDCASE_FILENAMES])
 701
 702 AC_CHECK_PROGS(CTAGS, exctags ctags)
 703 AC_CHECK_PROGS(ETAGS, exetags etags)
 704
 705 AC_CHECK_PROG(MAKE_LOWER_TAGS, ${CTAGS:-ctags}, yes, no)
 706
 707 if test "$cf_cv_mixedcase" = yes ; then
 708         AC_CHECK_PROG(MAKE_UPPER_TAGS, ${ETAGS:-etags}, yes, no)
 709 else
 710         MAKE_UPPER_TAGS=no
 711 fi
 712
 713 if test "$MAKE_UPPER_TAGS" = yes ; then
 714         MAKE_UPPER_TAGS=
 715 else
 716         MAKE_UPPER_TAGS="#"
 717 fi
 718
 719 if test "$MAKE_LOWER_TAGS" = yes ; then
 720         MAKE_LOWER_TAGS=
 721 else
 722         MAKE_LOWER_TAGS="#"
 723 fi
 724
 725 AC_SUBST(CTAGS)
 726 AC_SUBST(ETAGS)
 727
 728 AC_SUBST(MAKE_UPPER_TAGS)
 729 AC_SUBST(MAKE_LOWER_TAGS)
 730 ])dnl
 731 dnl ---------------------------------------------------------------------------
 732 dnl CF_MIXEDCASE_FILENAMES version: 6 updated: 2013/10/08 17:47:05
 733 dnl ----------------------
 734 dnl Check if the file-system supports mixed-case filenames.  If we're able to
 735 dnl create a lowercase name and see it as uppercase, it doesn't support that.
 736 AC_DEFUN([CF_MIXEDCASE_FILENAMES],
 737 [
 738 AC_CACHE_CHECK(if filesystem supports mixed-case filenames,cf_cv_mixedcase,[
 739 if test "$cross_compiling" = yes ; then
 740         case $target_alias in #(vi
 741         *-os2-emx*|*-msdosdjgpp*|*-cygwin*|*-msys*|*-mingw*|*-uwin*) #(vi
 742                 cf_cv_mixedcase=no
 743                 ;;
 744         *)
 745                 cf_cv_mixedcase=yes
 746                 ;;
 747         esac
 748 else
 749         rm -f conftest CONFTEST
 750         echo test >conftest
 751         if test -f CONFTEST ; then
 752                 cf_cv_mixedcase=no
 753         else
 754                 cf_cv_mixedcase=yes
 755         fi
 756         rm -f conftest CONFTEST
 757 fi
 758 ])
 759 test "$cf_cv_mixedcase" = yes && AC_DEFINE(MIXEDCASE_FILENAMES,1,[Define to 1 if filesystem supports mixed-case filenames.])
 760 ])dnl
 761 dnl ---------------------------------------------------------------------------
 762 dnl CF_MKSTEMP version: 9 updated: 2012/10/03 04:34:49
 763 dnl ----------
 764 dnl Check for a working mkstemp.  This creates two files, checks that they are
 765 dnl successfully created and distinct (AmigaOS apparently fails on the last).
 766 AC_DEFUN([CF_MKSTEMP],[
 767 AC_CACHE_CHECK(for working mkstemp, cf_cv_func_mkstemp,[
 768 rm -rf conftest*
 769 AC_TRY_RUN([
 770 #include <sys/types.h>
 771 #include <stdlib.h>
 772 #include <stdio.h>
 773 #include <string.h>
 774 #include <sys/stat.h>
 775 int main()
 776 {
 777         char *tmpl = "conftestXXXXXX";
 778         char name[2][80];
 779         int n;
 780         int result = 0;
 781         int fd;
 782         struct stat sb;
 783
 784         umask(077);
 785         for (n = 0; n < 2; ++n) {
 786                 strcpy(name[n], tmpl);
 787                 if ((fd = mkstemp(name[n])) >= 0) {
 788                         if (!strcmp(name[n], tmpl)
 789                          || stat(name[n], &sb) != 0
 790                          || (sb.st_mode & S_IFMT) != S_IFREG
 791                          || (sb.st_mode & 077) != 0) {
 792                                 result = 1;
 793                         }
 794                         close(fd);
 795                 }
 796         }
 797         if (result == 0
 798          && !strcmp(name[0], name[1]))
 799                 result = 1;
 800         ${cf_cv_main_return:-return}(result);
 801 }
 802 ],[cf_cv_func_mkstemp=yes
 803 ],[cf_cv_func_mkstemp=no
 804 ],[cf_cv_func_mkstemp=maybe])
 805 ])
 806 if test "x$cf_cv_func_mkstemp" = xmaybe ; then
 807         AC_CHECK_FUNC(mkstemp)
 808 fi
 809 if test "x$cf_cv_func_mkstemp" = xyes || test "x$ac_cv_func_mkstemp" = xyes ; then
 810         AC_DEFINE(HAVE_MKSTEMP,1,[Define to 1 if mkstemp() is available and working.])
 811 fi
 812 ])dnl
 813 dnl ---------------------------------------------------------------------------
 814 dnl CF_MSG_LOG version: 5 updated: 2010/10/23 15:52:32
 815 dnl ----------
 816 dnl Write a debug message to config.log, along with the line number in the
 817 dnl configure script.
 818 AC_DEFUN([CF_MSG_LOG],[
 819 echo "${as_me:-configure}:__oline__: testing $* ..." 1>&AC_FD_CC
 820 ])dnl
 821 dnl ---------------------------------------------------------------------------
 822 dnl CF_NO_LEAKS_OPTION version: 5 updated: 2012/10/02 20:55:03
 823 dnl ------------------
 824 dnl see CF_WITH_NO_LEAKS
 825 AC_DEFUN([CF_NO_LEAKS_OPTION],[
 826 AC_MSG_CHECKING(if you want to use $1 for testing)
 827 AC_ARG_WITH($1,
 828         [$2],
 829         [AC_DEFINE_UNQUOTED($3,1,"Define to 1 if you want to use $1 for testing.")ifelse([$4],,[
 830          $4
 831 ])
 832         : ${with_cflags:=-g}
 833         : ${with_no_leaks:=yes}
 834          with_$1=yes],
 835         [with_$1=])
 836 AC_MSG_RESULT(${with_$1:-no})
 837
 838 case .$with_cflags in #(vi
 839 .*-g*)
 840         case .$CFLAGS in #(vi
 841         .*-g*) #(vi
 842                 ;;
 843         *)
 844                 CF_ADD_CFLAGS([-g])
 845                 ;;
 846         esac
 847         ;;
 848 esac
 849 ])dnl
 850 dnl ---------------------------------------------------------------------------
 851 dnl CF_POSIX_C_SOURCE version: 8 updated: 2010/05/26 05:38:42
 852 dnl -----------------
 853 dnl Define _POSIX_C_SOURCE to the given level, and _POSIX_SOURCE if needed.
 854 dnl
 855 dnl     POSIX.1-1990                            _POSIX_SOURCE
 856 dnl     POSIX.1-1990 and                        _POSIX_SOURCE and
 857 dnl             POSIX.2-1992 C-Language                 _POSIX_C_SOURCE=2
 858 dnl             Bindings Option
 859 dnl     POSIX.1b-1993                           _POSIX_C_SOURCE=199309L
 860 dnl     POSIX.1c-1996                           _POSIX_C_SOURCE=199506L
 861 dnl     X/Open 2000                             _POSIX_C_SOURCE=200112L
 862 dnl
 863 dnl Parameters:
 864 dnl     $1 is the nominal value for _POSIX_C_SOURCE
 865 AC_DEFUN([CF_POSIX_C_SOURCE],
 866 [
 867 cf_POSIX_C_SOURCE=ifelse([$1],,199506L,[$1])
 868
 869 cf_save_CFLAGS="$CFLAGS"
 870 cf_save_CPPFLAGS="$CPPFLAGS"
 871
 872 CF_REMOVE_DEFINE(cf_trim_CFLAGS,$cf_save_CFLAGS,_POSIX_C_SOURCE)
 873 CF_REMOVE_DEFINE(cf_trim_CPPFLAGS,$cf_save_CPPFLAGS,_POSIX_C_SOURCE)
 874
 875 AC_CACHE_CHECK(if we should define _POSIX_C_SOURCE,cf_cv_posix_c_source,[
 876         CF_MSG_LOG(if the symbol is already defined go no further)
 877         AC_TRY_COMPILE([#include <sys/types.h>],[
 878 #ifndef _POSIX_C_SOURCE
 879 make an error
 880 #endif],
 881         [cf_cv_posix_c_source=no],
 882         [cf_want_posix_source=no
 883          case .$cf_POSIX_C_SOURCE in #(vi
 884          .[[12]]??*) #(vi
 885                 cf_cv_posix_c_source="-D_POSIX_C_SOURCE=$cf_POSIX_C_SOURCE"
 886                 ;;
 887          .2) #(vi
 888                 cf_cv_posix_c_source="-D_POSIX_C_SOURCE=$cf_POSIX_C_SOURCE"
 889                 cf_want_posix_source=yes
 890                 ;;
 891          .*)
 892                 cf_want_posix_source=yes
 893                 ;;
 894          esac
 895          if test "$cf_want_posix_source" = yes ; then
 896                 AC_TRY_COMPILE([#include <sys/types.h>],[
 897 #ifdef _POSIX_SOURCE
 898 make an error
 899 #endif],[],
 900                 cf_cv_posix_c_source="$cf_cv_posix_c_source -D_POSIX_SOURCE")
 901          fi
 902          CF_MSG_LOG(ifdef from value $cf_POSIX_C_SOURCE)
 903          CFLAGS="$cf_trim_CFLAGS"
 904          CPPFLAGS="$cf_trim_CPPFLAGS $cf_cv_posix_c_source"
 905          CF_MSG_LOG(if the second compile does not leave our definition intact error)
 906          AC_TRY_COMPILE([#include <sys/types.h>],[
 907 #ifndef _POSIX_C_SOURCE
 908 make an error
 909 #endif],,
 910          [cf_cv_posix_c_source=no])
 911          CFLAGS="$cf_save_CFLAGS"
 912          CPPFLAGS="$cf_save_CPPFLAGS"
 913         ])
 914 ])
 915
 916 if test "$cf_cv_posix_c_source" != no ; then
 917         CFLAGS="$cf_trim_CFLAGS"
 918         CPPFLAGS="$cf_trim_CPPFLAGS"
 919         CF_ADD_CFLAGS($cf_cv_posix_c_source)
 920 fi
 921
 922 ])dnl
 923 dnl ---------------------------------------------------------------------------
 924 dnl CF_PROG_AWK version: 1 updated: 2006/09/16 11:40:59
 925 dnl -----------
 926 dnl Check for awk, ensure that the check found something.
 927 AC_DEFUN([CF_PROG_AWK],
 928 [
 929 AC_PROG_AWK
 930 test -z "$AWK" && AC_MSG_ERROR(No awk program found)
 931 ])dnl
 932 dnl ---------------------------------------------------------------------------
 933 dnl CF_PROG_CC version: 4 updated: 2014/07/12 18:57:58
 934 dnl ----------
 935 dnl standard check for CC, plus followup sanity checks
 936 dnl $1 = optional parameter to pass to AC_PROG_CC to specify compiler name
 937 AC_DEFUN([CF_PROG_CC],[
 938 ifelse($1,,[AC_PROG_CC],[AC_PROG_CC($1)])
 939 CF_GCC_VERSION
 940 CF_ACVERSION_CHECK(2.52,
 941         [AC_PROG_CC_STDC],
 942         [CF_ANSI_CC_REQD])
 943 CF_CC_ENV_FLAGS
 944 ])dnl
 945 dnl ---------------------------------------------------------------------------
 946 dnl CF_PROG_LINT version: 2 updated: 2009/08/12 04:43:14
 947 dnl ------------
 948 AC_DEFUN([CF_PROG_LINT],
 949 [
 950 AC_CHECK_PROGS(LINT, tdlint lint alint splint lclint)
 951 AC_SUBST(LINT_OPTS)
 952 ])dnl
 953 dnl ---------------------------------------------------------------------------
 954 dnl CF_REMOVE_DEFINE version: 3 updated: 2010/01/09 11:05:50
 955 dnl ----------------
 956 dnl Remove all -U and -D options that refer to the given symbol from a list
 957 dnl of C compiler options.  This works around the problem that not all
 958 dnl compilers process -U and -D options from left-to-right, so a -U option
 959 dnl cannot be used to cancel the effect of a preceding -D option.
 960 dnl
 961 dnl $1 = target (which could be the same as the source variable)
 962 dnl $2 = source (including '$')
 963 dnl $3 = symbol to remove
 964 define([CF_REMOVE_DEFINE],
 965 [
 966 $1=`echo "$2" | \
 967         sed     -e 's/-[[UD]]'"$3"'\(=[[^       ]]*\)\?[[       ]]/ /g' \
 968                 -e 's/-[[UD]]'"$3"'\(=[[^       ]]*\)\?[$]//g'`
 969 ])dnl
 970 dnl ---------------------------------------------------------------------------
 971 dnl CF_TRY_XOPEN_SOURCE version: 1 updated: 2011/10/30 17:09:50
 972 dnl -------------------
 973 dnl If _XOPEN_SOURCE is not defined in the compile environment, check if we
 974 dnl can define it successfully.
 975 AC_DEFUN([CF_TRY_XOPEN_SOURCE],[
 976 AC_CACHE_CHECK(if we should define _XOPEN_SOURCE,cf_cv_xopen_source,[
 977         AC_TRY_COMPILE([
 978 #include <stdlib.h>
 979 #include <string.h>
 980 #include <sys/types.h>
 981 ],[
 982 #ifndef _XOPEN_SOURCE
 983 make an error
 984 #endif],
 985         [cf_cv_xopen_source=no],
 986         [cf_save="$CPPFLAGS"
 987          CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=$cf_XOPEN_SOURCE"
 988          AC_TRY_COMPILE([
 989 #include <stdlib.h>
 990 #include <string.h>
 991 #include <sys/types.h>
 992 ],[
 993 #ifdef _XOPEN_SOURCE
 994 make an error
 995 #endif],
 996         [cf_cv_xopen_source=no],
 997         [cf_cv_xopen_source=$cf_XOPEN_SOURCE])
 998         CPPFLAGS="$cf_save"
 999         ])
1000 ])
1001
1002 if test "$cf_cv_xopen_source" != no ; then
1003         CF_REMOVE_DEFINE(CFLAGS,$CFLAGS,_XOPEN_SOURCE)
1004         CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,_XOPEN_SOURCE)
1005         cf_temp_xopen_source="-D_XOPEN_SOURCE=$cf_cv_xopen_source"
1006         CF_ADD_CFLAGS($cf_temp_xopen_source)
1007 fi
1008 ])
1009 dnl ---------------------------------------------------------------------------
1010 dnl CF_UPPER version: 5 updated: 2001/01/29 23:40:59
1011 dnl --------
1012 dnl Make an uppercase version of a variable
1013 dnl $1=uppercase($2)
1014 AC_DEFUN([CF_UPPER],
1015 [
1016 $1=`echo "$2" | sed y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%`
1017 ])dnl
1018 dnl ---------------------------------------------------------------------------
1019 dnl CF_VERBOSE version: 3 updated: 2007/07/29 09:55:12
1020 dnl ----------
1021 dnl Use AC_VERBOSE w/o the warnings
1022 AC_DEFUN([CF_VERBOSE],
1023 [test -n "$verbose" && echo "   $1" 1>&AC_FD_MSG
1024 CF_MSG_LOG([$1])
1025 ])dnl
1026 dnl ---------------------------------------------------------------------------
1027 dnl CF_WITH_DBMALLOC version: 7 updated: 2010/06/21 17:26:47
1028 dnl ----------------
1029 dnl Configure-option for dbmalloc.  The optional parameter is used to override
1030 dnl the updating of $LIBS, e.g., to avoid conflict with subsequent tests.
1031 AC_DEFUN([CF_WITH_DBMALLOC],[
1032 CF_NO_LEAKS_OPTION(dbmalloc,
1033         [  --with-dbmalloc         test: use Conor Cahill's dbmalloc library],
1034         [USE_DBMALLOC])
1035
1036 if test "$with_dbmalloc" = yes ; then
1037         AC_CHECK_HEADER(dbmalloc.h,
1038                 [AC_CHECK_LIB(dbmalloc,[debug_malloc]ifelse([$1],,[],[,$1]))])
1039 fi
1040 ])dnl
1041 dnl ---------------------------------------------------------------------------
1042 dnl CF_WITH_DMALLOC version: 7 updated: 2010/06/21 17:26:47
1043 dnl ---------------
1044 dnl Configure-option for dmalloc.  The optional parameter is used to override
1045 dnl the updating of $LIBS, e.g., to avoid conflict with subsequent tests.
1046 AC_DEFUN([CF_WITH_DMALLOC],[
1047 CF_NO_LEAKS_OPTION(dmalloc,
1048         [  --with-dmalloc          test: use Gray Watson's dmalloc library],
1049         [USE_DMALLOC])
1050
1051 if test "$with_dmalloc" = yes ; then
1052         AC_CHECK_HEADER(dmalloc.h,
1053                 [AC_CHECK_LIB(dmalloc,[dmalloc_debug]ifelse([$1],,[],[,$1]))])
1054 fi
1055 ])dnl
1056 dnl ---------------------------------------------------------------------------
1057 dnl CF_WITH_VALGRIND version: 1 updated: 2006/12/14 18:00:21
1058 dnl ----------------
1059 AC_DEFUN([CF_WITH_VALGRIND],[
1060 CF_NO_LEAKS_OPTION(valgrind,
1061         [  --with-valgrind         test: use valgrind],
1062         [USE_VALGRIND])
1063 ])dnl
1064 dnl ---------------------------------------------------------------------------
1065 dnl CF_WITH_WARNINGS version: 5 updated: 2004/07/23 14:40:34
1066 dnl ----------------
1067 dnl Combine the checks for gcc features into a configure-script option
1068 dnl
1069 dnl Parameters:
1070 dnl     $1 - see CF_GCC_WARNINGS
1071 AC_DEFUN([CF_WITH_WARNINGS],
1072 [
1073 if ( test "$GCC" = yes || test "$GXX" = yes )
1074 then
1075 AC_MSG_CHECKING(if you want to check for gcc warnings)
1076 AC_ARG_WITH(warnings,
1077         [  --with-warnings         test: turn on gcc warnings],
1078         [cf_opt_with_warnings=$withval],
1079         [cf_opt_with_warnings=no])
1080 AC_MSG_RESULT($cf_opt_with_warnings)
1081 if test "$cf_opt_with_warnings" != no ; then
1082         CF_GCC_ATTRIBUTES
1083         CF_GCC_WARNINGS([$1])
1084 fi
1085 fi
1086 ])dnl
1087 dnl ---------------------------------------------------------------------------
1088 dnl CF_XOPEN_SOURCE version: 48 updated: 2014/09/01 12:29:14
1089 dnl ---------------
1090 dnl Try to get _XOPEN_SOURCE defined properly that we can use POSIX functions,
1091 dnl or adapt to the vendor's definitions to get equivalent functionality,
1092 dnl without losing the common non-POSIX features.
1093 dnl
1094 dnl Parameters:
1095 dnl     $1 is the nominal value for _XOPEN_SOURCE
1096 dnl     $2 is the nominal value for _POSIX_C_SOURCE
1097 AC_DEFUN([CF_XOPEN_SOURCE],[
1098 AC_REQUIRE([AC_CANONICAL_HOST])
1099
1100 cf_XOPEN_SOURCE=ifelse([$1],,500,[$1])
1101 cf_POSIX_C_SOURCE=ifelse([$2],,199506L,[$2])
1102 cf_xopen_source=
1103
1104 case $host_os in #(vi
1105 aix[[4-7]]*) #(vi
1106         cf_xopen_source="-D_ALL_SOURCE"
1107         ;;
1108 cygwin|msys) #(vi
1109         cf_XOPEN_SOURCE=600
1110         ;;
1111 darwin[[0-8]].*) #(vi
1112         cf_xopen_source="-D_APPLE_C_SOURCE"
1113         ;;
1114 darwin*) #(vi
1115         cf_xopen_source="-D_DARWIN_C_SOURCE"
1116         cf_XOPEN_SOURCE=
1117         ;;
1118 freebsd*|dragonfly*) #(vi
1119         # 5.x headers associate
1120         #       _XOPEN_SOURCE=600 with _POSIX_C_SOURCE=200112L
1121         #       _XOPEN_SOURCE=500 with _POSIX_C_SOURCE=199506L
1122         cf_POSIX_C_SOURCE=200112L
1123         cf_XOPEN_SOURCE=600
1124         cf_xopen_source="-D_BSD_TYPES -D__BSD_VISIBLE -D_POSIX_C_SOURCE=$cf_POSIX_C_SOURCE -D_XOPEN_SOURCE=$cf_XOPEN_SOURCE"
1125         ;;
1126 hpux11*) #(vi
1127         cf_xopen_source="-D_HPUX_SOURCE -D_XOPEN_SOURCE=500"
1128         ;;
1129 hpux*) #(vi
1130         cf_xopen_source="-D_HPUX_SOURCE"
1131         ;;
1132 irix[[56]].*) #(vi
1133         cf_xopen_source="-D_SGI_SOURCE"
1134         cf_XOPEN_SOURCE=
1135         ;;
1136 linux*|gnu*|mint*|k*bsd*-gnu) #(vi
1137         CF_GNU_SOURCE
1138         ;;
1139 minix*) #(vi
1140         cf_xopen_source="-D_NETBSD_SOURCE" # POSIX.1-2001 features are ifdef'd with this...
1141         ;;
1142 mirbsd*) #(vi
1143         # setting _XOPEN_SOURCE or _POSIX_SOURCE breaks <sys/select.h> and other headers which use u_int / u_short types
1144         cf_XOPEN_SOURCE=
1145         CF_POSIX_C_SOURCE($cf_POSIX_C_SOURCE)
1146         ;;
1147 netbsd*) #(vi
1148         cf_xopen_source="-D_NETBSD_SOURCE" # setting _XOPEN_SOURCE breaks IPv6 for lynx on NetBSD 1.6, breaks xterm, is not needed for ncursesw
1149         ;;
1150 openbsd[[4-9]]*) #(vi
1151         # setting _XOPEN_SOURCE lower than 500 breaks g++ compile with wchar.h, needed for ncursesw
1152         cf_xopen_source="-D_BSD_SOURCE"
1153         cf_XOPEN_SOURCE=600
1154         ;;
1155 openbsd*) #(vi
1156         # setting _XOPEN_SOURCE breaks xterm on OpenBSD 2.8, is not needed for ncursesw
1157         ;;
1158 osf[[45]]*) #(vi
1159         cf_xopen_source="-D_OSF_SOURCE"
1160         ;;
1161 nto-qnx*) #(vi
1162         cf_xopen_source="-D_QNX_SOURCE"
1163         ;;
1164 sco*) #(vi
1165         # setting _XOPEN_SOURCE breaks Lynx on SCO Unix / OpenServer
1166         ;;
1167 solaris2.*) #(vi
1168         cf_xopen_source="-D__EXTENSIONS__"
1169         cf_cv_xopen_source=broken
1170         ;;
1171 sysv4.2uw2.*) # Novell/SCO UnixWare 2.x (tested on 2.1.2)
1172         cf_XOPEN_SOURCE=
1173         cf_POSIX_C_SOURCE=
1174         ;;
1175 *)
1176         CF_TRY_XOPEN_SOURCE
1177         CF_POSIX_C_SOURCE($cf_POSIX_C_SOURCE)
1178         ;;
1179 esac
1180
1181 if test -n "$cf_xopen_source" ; then
1182         CF_ADD_CFLAGS($cf_xopen_source,true)
1183 fi
1184
1185 dnl In anything but the default case, we may have system-specific setting
1186 dnl which is still not guaranteed to provide all of the entrypoints that
1187 dnl _XOPEN_SOURCE would yield.
1188 if test -n "$cf_XOPEN_SOURCE" && test -z "$cf_cv_xopen_source" ; then
1189         AC_MSG_CHECKING(if _XOPEN_SOURCE really is set)
1190         AC_TRY_COMPILE([#include <stdlib.h>],[
1191 #ifndef _XOPEN_SOURCE
1192 make an error
1193 #endif],
1194         [cf_XOPEN_SOURCE_set=yes],
1195         [cf_XOPEN_SOURCE_set=no])
1196         AC_MSG_RESULT($cf_XOPEN_SOURCE_set)
1197         if test $cf_XOPEN_SOURCE_set = yes
1198         then
1199                 AC_TRY_COMPILE([#include <stdlib.h>],[
1200 #if (_XOPEN_SOURCE - 0) < $cf_XOPEN_SOURCE
1201 make an error
1202 #endif],
1203                 [cf_XOPEN_SOURCE_set_ok=yes],
1204                 [cf_XOPEN_SOURCE_set_ok=no])
1205                 if test $cf_XOPEN_SOURCE_set_ok = no
1206                 then
1207                         AC_MSG_WARN(_XOPEN_SOURCE is lower than requested)
1208                 fi
1209         else
1210                 CF_TRY_XOPEN_SOURCE
1211         fi
1212 fi
1213 ])