3 # Setup variables for the compiler
5 # COMPILER_TYPE is the major type of compiler. Currently gcc and clang support
6 # automatic detection. Other compiler types can be shoe-horned in, but require
7 # explicit setting of the compiler type. The compiler type can also be set
8 # explicitly if, say, you install gcc as clang...
10 # COMPILER_VERSION is a numeric constant equal to:
11 # major * 10000 + minor * 100 + tiny
12 # It too can be overridden on the command line. When testing it, be sure to
13 # make sure that you are limiting the test to a specific compiler. Testing
14 # against 30300 for gcc likely isn't what you wanted (since versions of gcc
15 # prior to 4.2 likely have no prayer of working).
17 # COMPILER_FREEBSD_VERSION is the compiler's __FreeBSD_cc_version value.
19 # COMPILER_FEATURES will contain one or more of the following, based on
20 # compiler support for that feature:
22 # - c++11: supports full (or nearly full) C++11 programming environment.
23 # - retpoline: supports the retpoline speculative execution vulnerability
26 # These variables with an X_ prefix will also be provided if XCC is set.
28 # This file may be included multiple times, but only has effect the first time.
31 .if !target(__<bsd.compiler.mk>__)
32 __<bsd.compiler.mk>__:
34 .include <bsd.opts.mk>
36 .if defined(_NO_INCLUDE_COMPILERMK)
37 # If _NO_INCLUDE_COMPILERMK is set we are doing a make obj/cleandir/cleanobj
38 # and might not have a valid compiler in $PATH yet. In this case just set the
39 # variables that are expected by the other .mk files and return
44 COMPILER_FEATURES=none
46 # command = /usr/local/bin/ccache cc ...
47 # wrapper = /usr/local/libexec/ccache/cc ...
48 CCACHE_BUILD_TYPE?= command
49 # Handle ccache after CC is determined, but not if CC/CXX are already
50 # overridden with a manual setup.
51 .if ${MK_CCACHE_BUILD:Uno} == "yes" && \
52 !make(test-system-*) && !make(print-dir) && !make(showconfig) && \
53 (${CC:M*ccache/world/*} == "" || ${CXX:M*ccache/world/*} == "")
54 # CC is always prepended with the ccache wrapper rather than modifying
55 # PATH since it is more clear that ccache is used and avoids wasting time
56 # for mkdep/linking/asm builds.
57 LOCALBASE?= /usr/local
58 CCACHE_WRAPPER_PATH?= ${LOCALBASE}/libexec/ccache
59 CCACHE_BIN?= ${LOCALBASE}/bin/ccache
60 .if exists(${CCACHE_BIN})
61 # Export to ensure sub-makes can filter it out for mkdep/linking and
62 # to chain down into kernel build which won't include this file.
64 # Expand and export some variables so they may be based on make vars.
65 # This allows doing something like the following in the environment:
66 # CCACHE_BASEDIR='${SRCTOP:H}' MAKEOBJDIRPREFIX='${SRCTOP:H}/obj'
67 .for var in CCACHE_LOGFILE CCACHE_BASEDIR
73 # Handle bootstrapped compiler changes properly by hashing their content
74 # rather than checking mtime. For external compilers it should be safe
75 # to use the more optimal mtime check.
76 # XXX: CCACHE_COMPILERCHECK= string:<compiler_version, compiler_build_rev, compiler_patch_rev, compiler_default_target, compiler_default_sysroot>
77 .if ${CC:N${CCACHE_BIN}:[1]:M/*} == ""
78 CCACHE_COMPILERCHECK?= content
80 CCACHE_COMPILERCHECK?= mtime
82 .export CCACHE_COMPILERCHECK
83 # Ensure no bogus CCACHE_PATH leaks in which might avoid the in-tree compiler.
84 .if !empty(CCACHE_PATH)
88 .if ${CCACHE_BUILD_TYPE} == "command"
89 # Remove ccache from the PATH to prevent double calls and wasted CPP/LD time.
90 PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g}
91 # Override various toolchain vars.
92 .for var in CC CXX HOST_CC HOST_CXX
93 .if defined(${var}) && ${${var}:M${CCACHE_BIN}} == ""
94 ${var}:= ${CCACHE_BIN} ${${var}}
98 # Need to ensure CCACHE_WRAPPER_PATH is the first in ${PATH}
99 PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g}
100 PATH:= ${CCACHE_WRAPPER_PATH}:${PATH}
101 CCACHE_WRAPPER_PATH_PFX= ${CCACHE_WRAPPER_PATH}:
102 .endif # ${CCACHE_BUILD_TYPE} == "command"
103 # GCC does not need the CCACHE_CPP2 hack enabled by default in devel/ccache.
104 # The port enables it due to ccache passing preprocessed C to clang
105 # which fails with -Wparentheses-equality, -Wtautological-compare, and
106 # -Wself-assign on macro-expanded lines.
107 .if defined(COMPILER_TYPE) && ${COMPILER_TYPE} == "gcc"
109 .export CCACHE_NOCPP2
111 # Canonicalize CCACHE_DIR for meta mode usage.
112 .if !defined(CCACHE_DIR)
113 CCACHE_DIR!= ${CCACHE_BIN} -p | awk '$$2 == "cache_dir" {print $$4}'
116 .if !empty(CCACHE_DIR) && empty(.MAKE.META.IGNORE_PATHS:M${CCACHE_DIR})
117 CCACHE_DIR:= ${CCACHE_DIR:tA}
118 .MAKE.META.IGNORE_PATHS+= ${CCACHE_DIR}
121 # ccache doesn't affect build output so let it slide for meta mode
123 .MAKE.META.IGNORE_PATHS+= ${CCACHE_BIN}
124 ccache-print-options: .PHONY
126 .endif # exists(${CCACHE_BIN})
127 .endif # ${MK_CCACHE_BUILD} == "yes"
129 _cc_vars=CC $${_empty_var_}
130 .if !empty(_WANT_TOOLCHAIN_CROSS_VARS)
131 # Only the toplevel makefile needs to compute the X_COMPILER_* variables.
132 # Skipping the computation of the unused X_COMPILER_* in the subdirectory
133 # makefiles can save a noticeable amount of time when walking the whole source
134 # tree (e.g. during make includes, etc.).
138 .for cc X_ in ${_cc_vars}
139 .if ${cc} == "CC" || !empty(XCC)
140 # Try to import COMPILER_TYPE and COMPILER_VERSION from parent make.
141 # The value is only used/exported for the same environment that impacts
142 # CC and COMPILER_* settings here.
143 _exported_vars= ${X_}COMPILER_TYPE ${X_}COMPILER_VERSION \
144 ${X_}COMPILER_FREEBSD_VERSION
145 ${X_}_cc_hash= ${${cc}}${MACHINE}${PATH}
146 ${X_}_cc_hash:= ${${X_}_cc_hash:hash}
147 # Only import if none of the vars are set somehow else.
149 .for var in ${_exported_vars}
154 .if ${_can_export} == yes
155 .for var in ${_exported_vars}
156 .if defined(${var}.${${X_}_cc_hash})
157 ${var}= ${${var}.${${X_}_cc_hash}}
162 .if ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC})
163 .if ${MACHINE} == "common"
164 # common is a pseudo machine for architecture independent
165 # generated files - thus there is no compiler.
166 ${X_}COMPILER_TYPE= none
167 ${X_}COMPILER_VERSION= 0
168 ${X_}COMPILER_FREEBSD_VERSION= 0
169 .elif !defined(${X_}COMPILER_TYPE) || !defined(${X_}COMPILER_VERSION)
170 _v!= ${${cc}:N${CCACHE_BIN}} --version || echo 0.0.0
172 .if !defined(${X_}COMPILER_TYPE)
173 . if ${${cc}:T:M*gcc*}
174 ${X_}COMPILER_TYPE:= gcc
175 . elif ${${cc}:T:M*clang*}
176 ${X_}COMPILER_TYPE:= clang
178 ${X_}COMPILER_TYPE:= gcc
179 . elif ${_v:M\(GCC\)} || ${_v:M*GNU}
180 ${X_}COMPILER_TYPE:= gcc
181 . elif ${_v:Mclang} || ${_v:M(clang-*.*.*)}
182 ${X_}COMPILER_TYPE:= clang
184 .error Unable to determine compiler type for ${cc}=${${cc}}. Consider setting ${X_}COMPILER_TYPE.
187 .if !defined(${X_}COMPILER_VERSION)
188 ${X_}COMPILER_VERSION!=echo "${_v:M[1-9].[0-9]*}" | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}'
192 .if !defined(${X_}COMPILER_FREEBSD_VERSION)
193 ${X_}COMPILER_FREEBSD_VERSION!= { echo "__FreeBSD_cc_version" | ${${cc}:N${CCACHE_BIN}} -E - 2>/dev/null || echo __FreeBSD_cc_version; } | sed -n '$$p'
194 # If we get a literal "__FreeBSD_cc_version" back then the compiler
195 # is a non-FreeBSD build that doesn't support it or some other error
197 .if ${${X_}COMPILER_FREEBSD_VERSION} == "__FreeBSD_cc_version"
198 ${X_}COMPILER_FREEBSD_VERSION= unknown
202 ${X_}COMPILER_FEATURES=
203 .if ${${X_}COMPILER_TYPE} == "clang" || \
204 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 40800)
205 ${X_}COMPILER_FEATURES+= c++11
207 .if ${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 60000
208 ${X_}COMPILER_FEATURES+= retpoline
213 X_COMPILER_TYPE= ${COMPILER_TYPE}
214 X_COMPILER_VERSION= ${COMPILER_VERSION}
215 X_COMPILER_FREEBSD_VERSION= ${COMPILER_FREEBSD_VERSION}
216 X_COMPILER_FEATURES= ${COMPILER_FEATURES}
217 .endif # ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC})
219 # Export the values so sub-makes don't have to look them up again, using the
220 # hash key computed above.
221 .for var in ${_exported_vars}
222 ${var}.${${X_}_cc_hash}:= ${${var}}
223 .export-env ${var}.${${X_}_cc_hash}
224 .undef ${var}.${${X_}_cc_hash}
227 .endif # ${cc} == "CC" || !empty(XCC)
228 .endfor # .for cc in CC XCC
230 .if !defined(_NO_INCLUDE_LINKERMK)
231 .include <bsd.linker.mk>
233 .endif # defined(_NO_INCLUDE_COMPILERMK)
234 .endif # !target(__<bsd.compiler.mk>__)