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++17: supports full (or nearly full) C++17 programming environment.
23 # - c++14: supports full (or nearly full) C++14 programming environment.
24 # - c++11: supports full (or nearly full) C++11 programming environment.
25 # - retpoline: supports the retpoline speculative execution vulnerability
28 # These variables with an X_ prefix will also be provided if XCC is set.
30 # This file may be included multiple times, but only has effect the first time.
33 .if !target(__<bsd.compiler.mk>__)
34 __<bsd.compiler.mk>__:
36 .include <bsd.opts.mk>
38 # command = /usr/local/bin/ccache cc ...
39 # wrapper = /usr/local/libexec/ccache/cc ...
40 CCACHE_BUILD_TYPE?= command
41 # Handle ccache after CC is determined, but not if CC/CXX are already
42 # overridden with a manual setup.
43 .if ${MK_CCACHE_BUILD:Uno} == "yes" && \
44 !make(test-system-*) && !make(print-dir) && !make(showconfig) && \
45 (${CC:M*ccache/world/*} == "" || ${CXX:M*ccache/world/*} == "")
46 # CC is always prepended with the ccache wrapper rather than modifying
47 # PATH since it is more clear that ccache is used and avoids wasting time
48 # for mkdep/linking/asm builds.
49 LOCALBASE?= /usr/local
50 CCACHE_WRAPPER_PATH?= ${LOCALBASE}/libexec/ccache
51 CCACHE_BIN?= ${LOCALBASE}/bin/ccache
52 .if exists(${CCACHE_BIN})
53 # Export to ensure sub-makes can filter it out for mkdep/linking and
54 # to chain down into kernel build which won't include this file.
56 # Expand and export some variables so they may be based on make vars.
57 # This allows doing something like the following in the environment:
58 # CCACHE_BASEDIR='${SRCTOP:H}' MAKEOBJDIRPREFIX='${SRCTOP:H}/obj'
59 .for var in CCACHE_LOGFILE CCACHE_BASEDIR
65 # Handle bootstrapped compiler changes properly by hashing their content
66 # rather than checking mtime. For external compilers it should be safe
67 # to use the more optimal mtime check.
68 # XXX: CCACHE_COMPILERCHECK= string:<compiler_version, compiler_build_rev, compiler_patch_rev, compiler_default_target, compiler_default_sysroot>
69 .if ${CC:N${CCACHE_BIN}:[1]:M/*} == ""
70 CCACHE_COMPILERCHECK?= content
72 CCACHE_COMPILERCHECK?= mtime
74 .export CCACHE_COMPILERCHECK
75 # Ensure no bogus CCACHE_PATH leaks in which might avoid the in-tree compiler.
76 .if !empty(CCACHE_PATH)
80 .if ${CCACHE_BUILD_TYPE} == "command"
81 # Remove ccache from the PATH to prevent double calls and wasted CPP/LD time.
82 PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g}
83 # Override various toolchain vars.
84 .for var in CC CXX HOST_CC HOST_CXX
85 .if defined(${var}) && ${${var}:M${CCACHE_BIN}} == ""
86 ${var}:= ${CCACHE_BIN} ${${var}}
90 # Need to ensure CCACHE_WRAPPER_PATH is the first in ${PATH}
91 PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g}
92 PATH:= ${CCACHE_WRAPPER_PATH}:${PATH}
93 CCACHE_WRAPPER_PATH_PFX= ${CCACHE_WRAPPER_PATH}:
94 .endif # ${CCACHE_BUILD_TYPE} == "command"
95 # GCC does not need the CCACHE_CPP2 hack enabled by default in devel/ccache.
96 # The port enables it due to ccache passing preprocessed C to clang
97 # which fails with -Wparentheses-equality, -Wtautological-compare, and
98 # -Wself-assign on macro-expanded lines.
99 .if defined(COMPILER_TYPE) && ${COMPILER_TYPE} == "gcc"
101 .export CCACHE_NOCPP2
103 # Canonicalize CCACHE_DIR for meta mode usage.
104 .if !defined(CCACHE_DIR)
105 CCACHE_DIR!= ${CCACHE_BIN} -p | awk '$$2 == "cache_dir" {print $$4}'
108 .if !empty(CCACHE_DIR) && empty(.MAKE.META.IGNORE_PATHS:M${CCACHE_DIR})
109 CCACHE_DIR:= ${CCACHE_DIR:tA}
110 .MAKE.META.IGNORE_PATHS+= ${CCACHE_DIR}
113 # ccache doesn't affect build output so let it slide for meta mode
115 .MAKE.META.IGNORE_PATHS+= ${CCACHE_BIN}
116 ccache-print-options: .PHONY
118 .endif # exists(${CCACHE_BIN})
119 .endif # ${MK_CCACHE_BUILD} == "yes"
121 .for cc X_ in CC $${_empty_var_} XCC X_
122 .if ${cc} == "CC" || !empty(XCC)
123 # Try to import COMPILER_TYPE and COMPILER_VERSION from parent make.
124 # The value is only used/exported for the same environment that impacts
125 # CC and COMPILER_* settings here.
126 _exported_vars= ${X_}COMPILER_TYPE ${X_}COMPILER_VERSION \
127 ${X_}COMPILER_FREEBSD_VERSION
128 ${X_}_cc_hash= ${${cc}}${MACHINE}${PATH}
129 ${X_}_cc_hash:= ${${X_}_cc_hash:hash}
130 # Only import if none of the vars are set somehow else.
132 .for var in ${_exported_vars}
137 .if ${_can_export} == yes
138 .for var in ${_exported_vars}
139 .if defined(${var}.${${X_}_cc_hash})
140 ${var}= ${${var}.${${X_}_cc_hash}}
145 .if ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC})
146 .if ${MACHINE} == "common"
147 # common is a pseudo machine for architecture independent
148 # generated files - thus there is no compiler.
149 ${X_}COMPILER_TYPE= none
150 ${X_}COMPILER_VERSION= 0
151 ${X_}COMPILER_FREEBSD_VERSION= 0
152 .elif !defined(${X_}COMPILER_TYPE) || !defined(${X_}COMPILER_VERSION)
153 _v!= ${${cc}:N${CCACHE_BIN}} --version || echo 0.0.0
155 .if !defined(${X_}COMPILER_TYPE)
156 . if ${${cc}:T:M*gcc*}
157 ${X_}COMPILER_TYPE:= gcc
158 . elif ${${cc}:T:M*clang*}
159 ${X_}COMPILER_TYPE:= clang
161 ${X_}COMPILER_TYPE:= gcc
162 . elif ${_v:M\(GCC\)} || ${_v:M*GNU}
163 ${X_}COMPILER_TYPE:= gcc
164 . elif ${_v:Mclang} || ${_v:M(clang-*.*.*)}
165 ${X_}COMPILER_TYPE:= clang
167 .error Unable to determine compiler type for ${cc}=${${cc}}. Consider setting ${X_}COMPILER_TYPE.
170 .if !defined(${X_}COMPILER_VERSION)
171 ${X_}COMPILER_VERSION!=echo "${_v:M[1-9]*.[0-9]*}" | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}'
175 .if !defined(${X_}COMPILER_FREEBSD_VERSION)
176 ${X_}COMPILER_FREEBSD_VERSION!= { echo "__FreeBSD_cc_version" | ${${cc}:N${CCACHE_BIN}} -E - 2>/dev/null || echo __FreeBSD_cc_version; } | sed -n '$$p'
177 # If we get a literal "__FreeBSD_cc_version" back then the compiler
178 # is a non-FreeBSD build that doesn't support it or some other error
180 .if ${${X_}COMPILER_FREEBSD_VERSION} == "__FreeBSD_cc_version"
181 ${X_}COMPILER_FREEBSD_VERSION= unknown
185 ${X_}COMPILER_FEATURES=
186 .if (${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 30300) || \
187 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 40800)
188 ${X_}COMPILER_FEATURES+= c++11
190 .if (${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 30400) || \
191 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 50000)
192 ${X_}COMPILER_FEATURES+= c++14
194 .if (${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 50000) || \
195 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 70000)
196 ${X_}COMPILER_FEATURES+= c++17
198 .if ${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 60000
199 ${X_}COMPILER_FEATURES+= retpoline
204 X_COMPILER_TYPE= ${COMPILER_TYPE}
205 X_COMPILER_VERSION= ${COMPILER_VERSION}
206 X_COMPILER_FREEBSD_VERSION= ${COMPILER_FREEBSD_VERSION}
207 X_COMPILER_FEATURES= ${COMPILER_FEATURES}
208 .endif # ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC})
210 # Export the values so sub-makes don't have to look them up again, using the
211 # hash key computed above.
212 .for var in ${_exported_vars}
213 ${var}.${${X_}_cc_hash}:= ${${var}}
214 .export-env ${var}.${${X_}_cc_hash}
215 .undef ${var}.${${X_}_cc_hash}
218 .endif # ${cc} == "CC" || !empty(XCC)
219 .endfor # .for cc in CC XCC
221 .if !defined(_NO_INCLUDE_LINKERMK)
222 .include <bsd.linker.mk>
224 .endif # !target(__<bsd.compiler.mk>__)