diff --git a/share/mk/bsd.compiler.mk b/share/mk/bsd.compiler.mk index fa8e6c44a17e..0d8f02489f00 100644 --- a/share/mk/bsd.compiler.mk +++ b/share/mk/bsd.compiler.mk @@ -1,254 +1,258 @@ # $FreeBSD$ # Setup variables for the compiler # # COMPILER_TYPE is the major type of compiler. Currently gcc and clang support # automatic detection. Other compiler types can be shoe-horned in, but require # explicit setting of the compiler type. The compiler type can also be set # explicitly if, say, you install gcc as clang... # # COMPILER_VERSION is a numeric constant equal to: # major * 10000 + minor * 100 + tiny # It too can be overridden on the command line. When testing it, be sure to # make sure that you are limiting the test to a specific compiler. Testing # against 30300 for gcc likely isn't what you wanted (since versions of gcc # prior to 4.2 likely have no prayer of working). # # COMPILER_FREEBSD_VERSION is the compiler's __FreeBSD_cc_version value. # # COMPILER_FEATURES will contain one or more of the following, based on # compiler support for that feature: # # - c++17: supports full (or nearly full) C++17 programming environment. # - c++14: supports full (or nearly full) C++14 programming environment. # - c++11: supports full (or nearly full) C++11 programming environment. # - retpoline: supports the retpoline speculative execution vulnerability # mitigation. # - init-all: supports stack variable initialization. # # These variables with an X_ prefix will also be provided if XCC is set. # # This file may be included multiple times, but only has effect the first time. # .if !target(____) ____: .include .if defined(_NO_INCLUDE_COMPILERMK) # If _NO_INCLUDE_COMPILERMK is set we are doing a make obj/cleandir/cleanobj # and might not have a valid compiler in $PATH yet. In this case just set the # variables that are expected by the other .mk files and return COMPILER_TYPE=none X_COMPILER_TYPE=none COMPILER_VERSION=0 X_COMPILER_VERSION=0 COMPILER_FEATURES=none .else # command = /usr/local/bin/ccache cc ... # wrapper = /usr/local/libexec/ccache/cc ... CCACHE_BUILD_TYPE?= command # Handle ccache after CC is determined, but not if CC/CXX are already # overridden with a manual setup. .if ${MK_CCACHE_BUILD:Uno} == "yes" && \ !make(test-system-*) && !make(print-dir) && !make(showconfig) && \ (${CC:M*ccache/world/*} == "" || ${CXX:M*ccache/world/*} == "") # CC is always prepended with the ccache wrapper rather than modifying # PATH since it is more clear that ccache is used and avoids wasting time # for mkdep/linking/asm builds. LOCALBASE?= /usr/local CCACHE_WRAPPER_PATH?= ${LOCALBASE}/libexec/ccache CCACHE_BIN?= ${LOCALBASE}/bin/ccache .if exists(${CCACHE_BIN}) # Export to ensure sub-makes can filter it out for mkdep/linking and # to chain down into kernel build which won't include this file. .export CCACHE_BIN # Expand and export some variables so they may be based on make vars. # This allows doing something like the following in the environment: # CCACHE_BASEDIR='${SRCTOP:H}' MAKEOBJDIRPREFIX='${SRCTOP:H}/obj' .for var in CCACHE_LOGFILE CCACHE_BASEDIR .if defined(${var}) ${var}:= ${${var}} .export ${var} .endif .endfor # Handle bootstrapped compiler changes properly by hashing their content # rather than checking mtime. For external compilers it should be safe # to use the more optimal mtime check. # XXX: CCACHE_COMPILERCHECK= string: .if ${CC:N${CCACHE_BIN}:[1]:M/*} == "" CCACHE_COMPILERCHECK?= content .else CCACHE_COMPILERCHECK?= mtime .endif .export CCACHE_COMPILERCHECK # Ensure no bogus CCACHE_PATH leaks in which might avoid the in-tree compiler. .if !empty(CCACHE_PATH) CCACHE_PATH= .export CCACHE_PATH .endif .if ${CCACHE_BUILD_TYPE} == "command" # Remove ccache from the PATH to prevent double calls and wasted CPP/LD time. PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g} # Override various toolchain vars. .for var in CC CXX HOST_CC HOST_CXX .if defined(${var}) && ${${var}:M${CCACHE_BIN}} == "" ${var}:= ${CCACHE_BIN} ${${var}} .endif .endfor .else # Need to ensure CCACHE_WRAPPER_PATH is the first in ${PATH} PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g} PATH:= ${CCACHE_WRAPPER_PATH}:${PATH} CCACHE_WRAPPER_PATH_PFX= ${CCACHE_WRAPPER_PATH}: .endif # ${CCACHE_BUILD_TYPE} == "command" # GCC does not need the CCACHE_CPP2 hack enabled by default in devel/ccache. # The port enables it due to ccache passing preprocessed C to clang # which fails with -Wparentheses-equality, -Wtautological-compare, and # -Wself-assign on macro-expanded lines. .if defined(COMPILER_TYPE) && ${COMPILER_TYPE} == "gcc" CCACHE_NOCPP2= 1 .export CCACHE_NOCPP2 .endif # Canonicalize CCACHE_DIR for meta mode usage. .if !defined(CCACHE_DIR) CCACHE_DIR!= ${CCACHE_BIN} -p | awk '$$2 == "cache_dir" {print $$4}' .export CCACHE_DIR .endif .if !empty(CCACHE_DIR) && empty(.MAKE.META.IGNORE_PATHS:M${CCACHE_DIR}) CCACHE_DIR:= ${CCACHE_DIR:tA} .MAKE.META.IGNORE_PATHS+= ${CCACHE_DIR} .export CCACHE_DIR .endif # ccache doesn't affect build output so let it slide for meta mode # comparisons. .MAKE.META.IGNORE_PATHS+= ${CCACHE_BIN} ccache-print-options: .PHONY @${CCACHE_BIN} -p .endif # exists(${CCACHE_BIN}) .endif # ${MK_CCACHE_BUILD} == "yes" _cc_vars=CC $${_empty_var_} .if !empty(_WANT_TOOLCHAIN_CROSS_VARS) # Only the toplevel makefile needs to compute the X_COMPILER_* variables. # Skipping the computation of the unused X_COMPILER_* in the subdirectory # makefiles can save a noticeable amount of time when walking the whole source # tree (e.g. during make includes, etc.). _cc_vars+=XCC X_ .endif .for cc X_ in ${_cc_vars} .if ${cc} == "CC" || !empty(XCC) # Try to import COMPILER_TYPE and COMPILER_VERSION from parent make. # The value is only used/exported for the same environment that impacts # CC and COMPILER_* settings here. _exported_vars= ${X_}COMPILER_TYPE ${X_}COMPILER_VERSION \ ${X_}COMPILER_FREEBSD_VERSION ${X_}COMPILER_RESOURCE_DIR ${X_}_cc_hash= ${${cc}}${MACHINE}${PATH} ${X_}_cc_hash:= ${${X_}_cc_hash:hash} # Only import if none of the vars are set differently somehow else. _can_export= yes .for var in ${_exported_vars} .if defined(${var}) && (!defined(${var}__${${X_}_cc_hash}) || ${${var}__${${X_}_cc_hash}} != ${${var}}) .if defined(${var}__${${X_}_ld_hash}) .info "Cannot import ${X_}COMPILER variables since cached ${var} is different: ${${var}__${${X_}_cc_hash}} != ${${var}}" .endif _can_export= no .endif .endfor .if ${_can_export} == yes .for var in ${_exported_vars} .if defined(${var}__${${X_}_cc_hash}) ${var}= ${${var}__${${X_}_cc_hash}} .endif .endfor .endif .if ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC}) .if ${MACHINE} == "common" # common is a pseudo machine for architecture independent # generated files - thus there is no compiler. ${X_}COMPILER_TYPE= none ${X_}COMPILER_VERSION= 0 ${X_}COMPILER_FREEBSD_VERSION= 0 .elif !defined(${X_}COMPILER_TYPE) || !defined(${X_}COMPILER_VERSION) _v!= ${${cc}:N${CCACHE_BIN}} --version || echo 0.0.0 .if !defined(${X_}COMPILER_TYPE) . if ${${cc}:T:M*gcc*} ${X_}COMPILER_TYPE:= gcc . elif ${${cc}:T:M*clang*} ${X_}COMPILER_TYPE:= clang . elif ${_v:Mgcc} ${X_}COMPILER_TYPE:= gcc . elif ${_v:M\(GCC\)} || ${_v:M*GNU} ${X_}COMPILER_TYPE:= gcc . elif ${_v:Mclang} || ${_v:M(clang-*.*.*)} ${X_}COMPILER_TYPE:= clang . else # With GCC, cc --version prints "cc $VERSION ($PKGVERSION)", so if a # distribution overrides the default GCC PKGVERSION it is not identified. # However, its -v output always says "gcc version" in it, so fall back on that. _gcc_version!= ${${cc}:N${CCACHE_BIN}} -v 2>&1 | grep "gcc version" . if !empty(_gcc_version) ${X_}COMPILER_TYPE:= gcc . else .error Unable to determine compiler type for ${cc}=${${cc}}. Consider setting ${X_}COMPILER_TYPE. . endif .undef _gcc_version . endif .endif .if !defined(${X_}COMPILER_VERSION) ${X_}COMPILER_VERSION!=echo "${_v:M[1-9]*.[0-9]*}" | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}' .endif .undef _v .endif .if !defined(${X_}COMPILER_FREEBSD_VERSION) ${X_}COMPILER_FREEBSD_VERSION!= { echo "__FreeBSD_cc_version" | ${${cc}:N${CCACHE_BIN}} -E - 2>/dev/null || echo __FreeBSD_cc_version; } | sed -n '$$p' # If we get a literal "__FreeBSD_cc_version" back then the compiler # is a non-FreeBSD build that doesn't support it or some other error # occurred. .if ${${X_}COMPILER_FREEBSD_VERSION} == "__FreeBSD_cc_version" ${X_}COMPILER_FREEBSD_VERSION= unknown .endif .endif .if !defined(${X_}COMPILER_RESOURCE_DIR) ${X_}COMPILER_RESOURCE_DIR!= ${${cc}:N${CCACHE_BIN}} -print-resource-dir 2>/dev/null || echo unknown .endif ${X_}COMPILER_FEATURES= c++11 c++14 .if ${${X_}COMPILER_TYPE} == "clang" || \ (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 70000) ${X_}COMPILER_FEATURES+= c++17 .endif .if ${${X_}COMPILER_TYPE} == "clang" ${X_}COMPILER_FEATURES+= retpoline init-all .endif +.if ${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 100000 || \ + (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 80100) +${X_}COMPILER_FEATURES+= fileprefixmap +.endif .else # Use CC's values X_COMPILER_TYPE= ${COMPILER_TYPE} X_COMPILER_VERSION= ${COMPILER_VERSION} X_COMPILER_FREEBSD_VERSION= ${COMPILER_FREEBSD_VERSION} X_COMPILER_FEATURES= ${COMPILER_FEATURES} X_COMPILER_RESOURCE_DIR= ${COMPILER_RESOURCE_DIR} .endif # ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC}) # Export the values so sub-makes don't have to look them up again, using the # hash key computed above. .for var in ${_exported_vars} ${var}__${${X_}_cc_hash}:= ${${var}} .export-env ${var}__${${X_}_cc_hash} .undef ${var}__${${X_}_cc_hash} .endfor .endif # ${cc} == "CC" || !empty(XCC) .endfor # .for cc in CC XCC .if !defined(_NO_INCLUDE_LINKERMK) .include .endif .endif # defined(_NO_INCLUDE_COMPILERMK) .endif # !target(____)