lib/libc/Makefile

   1
   2 PACKAGE=        clibs
   3 SHLIBDIR?= /lib
   4
   5 .include <src.opts.mk>
   6
   7 LIBC_SRCTOP?= ${.CURDIR}
   8 LIBSYS_SRCTOP?= ${.CURDIR:H}/libsys
   9
  10 # Pick the current architecture directory for libc. In general, this is named
  11 # MACHINE_CPUARCH, but some ABIs are different enough to require their own libc,
  12 # so allow a directory named MACHINE_ARCH to override this (though treat
  13 # powerpc64le and powerpc64 the same).
  14 # Note: This is copied to msun/Makefile
  15 M=${MACHINE_ARCH:S/powerpc64le/powerpc64/}
  16 .if exists(${LIBC_SRCTOP}/${M})
  17 LIBC_ARCH=${M}
  18 .else
  19 LIBC_ARCH=${MACHINE_CPUARCH}
  20 .endif
  21
  22 # All library objects contain FreeBSD revision strings by default; they may be
  23 # excluded as a space-saving measure.  To produce a library that does
  24 # not contain these strings, add -DSTRIP_FBSDID (see <sys/cdefs.h>) to CFLAGS
  25 # below.  Note: there are no IDs for syscall stubs whose sources are generated.
  26 # To include legacy CSRG SCCS ID strings, remove -DNO__SCCSID from CFLAGS.
  27 # To include RCS ID strings from other BSD projects, remove -DNO__RCSID from CFLAGS.
  28 CFLAGS+=-DNO__SCCSID -DNO__RCSID
  29
  30 LIB=c
  31 SHLIB_MAJOR= 7
  32 .if ${MK_SSP} != "no" && \
  33     (${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
  34 SHLIB_LDSCRIPT=libc.ldscript
  35 .else
  36 SHLIB_LDSCRIPT=libc_nossp.ldscript
  37 .endif
  38 SHLIB_LDSCRIPT_LINKS=libxnet.so
  39 WARNS?= 2
  40 CFLAGS+=-I${LIBC_SRCTOP}/include -I${SRCTOP}/include
  41 CFLAGS+=-I${LIBC_SRCTOP}/${LIBC_ARCH}
  42 CFLAGS+=-I${LIBSYS_SRCTOP}/${LIBC_ARCH}
  43 .if ${MK_NLS} != "no"
  44 CFLAGS+=-DNLS
  45 .endif
  46 CLEANFILES+=tags
  47 INSTALL_PIC_ARCHIVE=
  48 BUILD_NOSSP_PIC_ARCHIVE=
  49 PRECIOUSLIB=
  50
  51 .ifndef NO_THREAD_STACK_UNWIND
  52 CANCELPOINTS_CFLAGS=-fexceptions
  53 CFLAGS+=${CANCELPOINTS_CFLAGS}
  54 .endif
  55
  56 # Use a more efficient TLS model for libc since we can reasonably assume that
  57 # it will be loaded during program startup.
  58 CFLAGS+= -ftls-model=initial-exec
  59
  60 #
  61 # Link with static libcompiler_rt.a.
  62 #
  63 LDFLAGS+= -nodefaultlibs
  64 LIBADD+=        compiler_rt
  65 LIBADD+=        sys
  66 .if defined(COMPAT_libcompat)
  67 # XXX: work around gcc -m32 + bfd ld path issue for DT_NEEDED symbols.
  68 # https://sourceware.org/bugzilla/show_bug.cgi?id=31395
  69 LDFLAGS+=       -Wl,--rpath=/usr/lib${COMPAT_libcompat}
  70 .endif
  71
  72 LDFLAGS+=-Wl,--auxiliary,libsys.so.7
  73
  74 .if ${MK_SSP} != "no" && \
  75     (${LIBC_ARCH} == "i386" || ${LIBC_ARCH:Mpowerpc*} != "")
  76 LIBADD+=        ssp_nonshared
  77 .endif
  78
  79 # Extras that live in either libc.a or libc_nonshared.a
  80 LIBC_NONSHARED_SRCS=
  81
  82 RTLD_ELF_DIR=${SRCTOP}/libexec/rtld-elf
  83 .if exists(${RTLD_ELF_DIR}/${MACHINE_ARCH:S/powerpc64le/powerpc64/})
  84 RTLD_ARCH=      ${MACHINE_ARCH:S/powerpc64le/powerpc64/}
  85 .else
  86 RTLD_ARCH=      ${MACHINE_CPUARCH}
  87 .endif
  88 RTLD_HDRS= -I${RTLD_ELF_DIR}/${RTLD_ARCH} -I${RTLD_ELF_DIR}
  89
  90 # Define (empty) variables so that make doesn't give substitution
  91 # errors if the included makefiles don't change these:
  92 MDSRCS=
  93 MISRCS=
  94 MDASM=
  95 MIASM=
  96 NOASM=
  97
  98 .include "${LIBC_SRCTOP}/${LIBC_ARCH}/Makefile.inc"
  99 .include "${LIBC_SRCTOP}/csu/Makefile.inc"
 100 .include "${LIBC_SRCTOP}/db/Makefile.inc"
 101 .include "${LIBC_SRCTOP}/compat-43/Makefile.inc"
 102 .include "${LIBC_SRCTOP}/gdtoa/Makefile.inc"
 103 .include "${LIBC_SRCTOP}/gen/Makefile.inc"
 104 .include "${LIBC_SRCTOP}/gmon/Makefile.inc"
 105 .if ${MK_ICONV} != "no"
 106 .include "${LIBC_SRCTOP}/iconv/Makefile.inc"
 107 .endif
 108 .include "${LIBC_SRCTOP}/inet/Makefile.inc"
 109 .include "${LIBC_SRCTOP}/isc/Makefile.inc"
 110 .include "${LIBC_SRCTOP}/locale/Makefile.inc"
 111 .include "${LIBC_SRCTOP}/md/Makefile.inc"
 112 .include "${LIBC_SRCTOP}/nameser/Makefile.inc"
 113 .include "${LIBC_SRCTOP}/net/Makefile.inc"
 114 .include "${LIBC_SRCTOP}/nls/Makefile.inc"
 115 .include "${LIBC_SRCTOP}/posix1e/Makefile.inc"
 116 .if ${MACHINE_ABI:Mlong32}
 117 .include "${LIBC_SRCTOP}/quad/Makefile.inc"
 118 .endif
 119 .include "${LIBC_SRCTOP}/regex/Makefile.inc"
 120 .include "${LIBC_SRCTOP}/resolv/Makefile.inc"
 121 .include "${LIBC_SRCTOP}/stdio/Makefile.inc"
 122 .include "${LIBC_SRCTOP}/stdlib/Makefile.inc"
 123 .include "${LIBC_SRCTOP}/stdtime/Makefile.inc"
 124 .include "${LIBC_SRCTOP}/string/Makefile.inc"
 125 SHARED_CFLAGS+= -D'_SYSCALL_BODY(name)='
 126 .include "${LIBSYS_SRCTOP}/Makefile.sys"
 127 .include "${LIBC_SRCTOP}/secure/Makefile.inc"
 128 .include "${LIBC_SRCTOP}/rpc/Makefile.inc"
 129 .include "${LIBC_SRCTOP}/uuid/Makefile.inc"
 130 .include "${LIBC_SRCTOP}/xdr/Makefile.inc"
 131 .if (${LIBC_ARCH} == "arm" && (defined(CPUTYPE) && ${CPUTYPE:M*soft*}))
 132 .include "${LIBC_SRCTOP}/softfloat/Makefile.inc"
 133 .endif
 134 .if ${LIBC_ARCH} == "i386" || ${LIBC_ARCH} == "amd64"
 135 .include "${LIBC_SRCTOP}/x86/gen/Makefile.inc"
 136 .endif
 137 .if ${MK_NIS} != "no"
 138 CFLAGS+= -DYP
 139 .include "${LIBC_SRCTOP}/yp/Makefile.inc"
 140 .endif
 141 .include "${LIBC_SRCTOP}/capability/Makefile.inc"
 142 .if ${MK_HESIOD} != "no"
 143 CFLAGS+= -DHESIOD
 144 .endif
 145 .if ${MK_FP_LIBC} == "no"
 146 CFLAGS+= -DNO_FLOATING_POINT
 147 .endif
 148 .if ${MK_NS_CACHING} != "no"
 149 CFLAGS+= -DNS_CACHING
 150 .endif
 151 .if defined(_FREEFALL_CONFIG)
 152 CFLAGS+=-D_FREEFALL_CONFIG
 153 .endif
 154
 155 STATICOBJS+=${LIBC_NONSHARED_SRCS:S/.c$/.o/}
 156
 157 VERSION_DEF=${LIBC_SRCTOP}/Versions.def
 158 SYMBOL_MAPS=${SYM_MAPS}
 159
 160 # If there are no machine dependent sources, append all the
 161 # machine-independent sources:
 162 .if empty(MDSRCS) || ${MK_MACHDEP_OPTIMIZATIONS} == no
 163 SRCS+=  ${MISRCS}
 164 .else
 165 # Append machine-dependent sources, then append machine-independent sources
 166 # for which there is no machine-dependent variant.
 167 SRCS+=  ${MDSRCS}
 168 .for _src in ${MISRCS}
 169 .if ${MDSRCS:R:M${_src:R}} == ""
 170 SRCS+=  ${_src}
 171 .endif
 172 .endfor
 173 .endif
 174
 175 KQSRCS= adddi3.c anddi3.c ashldi3.c ashrdi3.c cmpdi2.c divdi3.c iordi3.c \
 176         lshldi3.c lshrdi3.c moddi3.c muldi3.c negdi2.c notdi2.c qdivrem.c \
 177         subdi3.c ucmpdi2.c udivdi3.c umoddi3.c xordi3.c
 178 KSRCS=  bcmp.c ffs.c ffsl.c fls.c flsl.c mcount.c strcat.c strchr.c \
 179         strcmp.c strcpy.c strlen.c strncpy.c strrchr.c
 180
 181 libkern: libkern.gen libkern.${LIBC_ARCH}
 182
 183 libkern.gen: ${KQSRCS} ${KSRCS}
 184         ${CP} ${LIBC_SRCTOP}/quad/quad.h ${.ALLSRC} ${DESTDIR}/sys/libkern
 185
 186 libkern.${LIBC_ARCH}:: ${KMSRCS}
 187 .if defined(KMSRCS) && !empty(KMSRCS)
 188         ${CP} ${.ALLSRC} ${DESTDIR}/sys/libkern/${LIBC_ARCH}
 189 .endif
 190
 191 HAS_TESTS=
 192 SUBDIR.${MK_TESTS}+= tests
 193
 194 .include <bsd.lib.mk>
 195
 196 .if (${LIBC_ARCH} == amd64 || ${LIBC_ARCH} == i386) && \
 197     ${.TARGETS:Mall} == all && \
 198     defined(LINKER_FEATURES) && ${LINKER_FEATURES:Mifunc} == ""
 199 .error ${LIBC_ARCH} libc requires linker ifunc support
 200 .endif
 201
 202 .if !defined(_SKIP_BUILD)
 203 # We need libutil.h, get it directly to avoid
 204 # recording a build dependency
 205 CFLAGS+= -I${SRCTOP}/lib/libutil
 206 # Same issue with libm
 207 MSUN_ARCH_SUBDIR != ${MAKE} -B -C ${SRCTOP}/lib/msun -V ARCH_SUBDIR
 208 # unfortunately msun/src contains both private and public headers
 209 CFLAGS+= -I${SRCTOP}/lib/msun/${MSUN_ARCH_SUBDIR}
 210 .if ${MACHINE_CPUARCH} == "i386" || ${MACHINE_CPUARCH} == "amd64"
 211 CFLAGS+= -I${SRCTOP}/lib/msun/x86
 212 .endif
 213 CFLAGS+= -I${SRCTOP}/lib/msun/src
 214 # and we do not want to record a dependency on msun
 215 .if ${.MAKE.LEVEL} > 0
 216 GENDIRDEPS_FILTER+= N${RELDIR:H}/msun
 217 .endif
 218 .endif
 219
 220 # Disable warnings in contributed sources.
 221 CWARNFLAGS:=    ${.IMPSRC:Ngdtoa_*.c:C/^.+$/${CWARNFLAGS}/:C/^$/-w/}
 222 # Disable stack protection for SSP symbols.
 223 SSP_CFLAGS:=    ${.IMPSRC:N*/stack_protector.c:C/^.+$/${SSP_CFLAGS}/}
 224 # Generate stack unwinding tables for cancellation points
 225 CANCELPOINTS_CFLAGS:=   ${.IMPSRC:Mcancelpoints_*:C/^.+$/${CANCELPOINTS_CFLAGS}/:C/^$//}