1# $FreeBSD$ 2 3# Setup variables for the compiler 4# 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... 9# 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). 16# 17# COMPILER_FREEBSD_VERSION is the compiler's __FreeBSD_cc_version value. 18# 19# COMPILER_FEATURES will contain one or more of the following, based on 20# compiler support for that feature: 21# 22# - c++11: supports full (or nearly full) C++11 programming environment. 23# - retpoline: supports the retpoline speculative execution vulnerability 24# mitigation. 25# 26# These variables with an X_ prefix will also be provided if XCC is set. 27# 28# This file may be included multiple times, but only has effect the first time. 29# 30 31.if !target(__<bsd.compiler.mk>__) 32__<bsd.compiler.mk>__: 33 34.include <bsd.opts.mk> 35 36# command = /usr/local/bin/ccache cc ... 37# wrapper = /usr/local/libexec/ccache/cc ... 38CCACHE_BUILD_TYPE?= command 39# Handle ccache after CC is determined, but not if CC/CXX are already 40# overridden with a manual setup. 41.if ${MK_CCACHE_BUILD:Uno} == "yes" && \ 42 !make(showconfig) && \ 43 (${CC:M*ccache/world/*} == "" || ${CXX:M*ccache/world/*} == "") 44# CC is always prepended with the ccache wrapper rather than modifying 45# PATH since it is more clear that ccache is used and avoids wasting time 46# for mkdep/linking/asm builds. 47LOCALBASE?= /usr/local 48CCACHE_WRAPPER_PATH?= ${LOCALBASE}/libexec/ccache 49CCACHE_BIN?= ${LOCALBASE}/bin/ccache 50.if exists(${CCACHE_BIN}) 51# Export to ensure sub-makes can filter it out for mkdep/linking and 52# to chain down into kernel build which won't include this file. 53.export CCACHE_BIN 54# Expand and export some variables so they may be based on make vars. 55# This allows doing something like the following in the environment: 56# CCACHE_BASEDIR='${SRCTOP:H}' MAKEOBJDIRPREFIX='${SRCTOP:H}/obj' 57.for var in CCACHE_LOGFILE CCACHE_BASEDIR 58.if defined(${var}) 59${var}:= ${${var}} 60.export ${var} 61.endif 62.endfor 63# Handle bootstrapped compiler changes properly by hashing their content 64# rather than checking mtime. For external compilers it should be safe 65# to use the more optimal mtime check. 66# XXX: CCACHE_COMPILERCHECK= string:<compiler_version, compiler_build_rev, compiler_patch_rev, compiler_default_target, compiler_default_sysroot> 67.if ${CC:N${CCACHE_BIN}:[1]:M/*} == "" 68CCACHE_COMPILERCHECK?= content 69.else 70CCACHE_COMPILERCHECK?= mtime 71.endif 72.export CCACHE_COMPILERCHECK 73# Ensure no bogus CCACHE_PATH leaks in which might avoid the in-tree compiler. 74.if !empty(CCACHE_PATH) 75CCACHE_PATH= 76.export CCACHE_PATH 77.endif 78.if ${CCACHE_BUILD_TYPE} == "command" 79# Remove ccache from the PATH to prevent double calls and wasted CPP/LD time. 80PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g} 81# Override various toolchain vars. 82.for var in CC CXX HOST_CC HOST_CXX 83.if defined(${var}) && ${${var}:M${CCACHE_BIN}} == "" 84${var}:= ${CCACHE_BIN} ${${var}} 85.endif 86.endfor 87.else 88# Need to ensure CCACHE_WRAPPER_PATH is the first in ${PATH} 89PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g} 90PATH:= ${CCACHE_WRAPPER_PATH}:${PATH} 91CCACHE_WRAPPER_PATH_PFX= ${CCACHE_WRAPPER_PATH}: 92.endif # ${CCACHE_BUILD_TYPE} == "command" 93# GCC does not need the CCACHE_CPP2 hack enabled by default in devel/ccache. 94# The port enables it due to ccache passing preprocessed C to clang 95# which fails with -Wparentheses-equality, -Wtautological-compare, and 96# -Wself-assign on macro-expanded lines. 97.if defined(COMPILER_TYPE) && ${COMPILER_TYPE} == "gcc" 98CCACHE_NOCPP2= 1 99.export CCACHE_NOCPP2 100.endif 101# Canonicalize CCACHE_DIR for meta mode usage. 102.if !defined(CCACHE_DIR) 103CCACHE_DIR!= ${CCACHE_BIN} -p | awk '$$2 == "cache_dir" {print $$4}' 104.export CCACHE_DIR 105.endif 106.if !empty(CCACHE_DIR) && empty(.MAKE.META.IGNORE_PATHS:M${CCACHE_DIR}) 107CCACHE_DIR:= ${CCACHE_DIR:tA} 108.MAKE.META.IGNORE_PATHS+= ${CCACHE_DIR} 109.export CCACHE_DIR 110.endif 111# ccache doesn't affect build output so let it slide for meta mode 112# comparisons. 113.MAKE.META.IGNORE_PATHS+= ${CCACHE_BIN} 114ccache-print-options: .PHONY 115 @${CCACHE_BIN} -p 116.endif # exists(${CCACHE_BIN}) 117.endif # ${MK_CCACHE_BUILD} == "yes" 118 119.for cc X_ in CC $${_empty_var_} XCC X_ 120.if ${cc} == "CC" || !empty(XCC) 121# Try to import COMPILER_TYPE and COMPILER_VERSION from parent make. 122# The value is only used/exported for the same environment that impacts 123# CC and COMPILER_* settings here. 124_exported_vars= ${X_}COMPILER_TYPE ${X_}COMPILER_VERSION \ 125 ${X_}COMPILER_FREEBSD_VERSION 126${X_}_cc_hash= ${${cc}}${MACHINE}${PATH} 127${X_}_cc_hash:= ${${X_}_cc_hash:hash} 128# Only import if none of the vars are set somehow else. 129_can_export= yes 130.for var in ${_exported_vars} 131.if defined(${var}) 132_can_export= no 133.endif 134.endfor 135.if ${_can_export} == yes 136.for var in ${_exported_vars} 137.if defined(${var}.${${X_}_cc_hash}) 138${var}= ${${var}.${${X_}_cc_hash}} 139.endif 140.endfor 141.endif 142 143.if ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC}) 144.if ${MACHINE} == "common" 145# common is a pseudo machine for architecture independent 146# generated files - thus there is no compiler. 147${X_}COMPILER_TYPE= none 148${X_}COMPILER_VERSION= 0 149${X_}COMPILER_FREEBSD_VERSION= 0 150.elif !defined(${X_}COMPILER_TYPE) || !defined(${X_}COMPILER_VERSION) 151_v!= ${${cc}} --version || echo 0.0.0 152 153.if !defined(${X_}COMPILER_TYPE) 154. if ${${cc}:T:M*gcc*} 155${X_}COMPILER_TYPE:= gcc 156. elif ${${cc}:T:M*clang*} 157${X_}COMPILER_TYPE:= clang 158. elif ${_v:Mgcc} 159${X_}COMPILER_TYPE:= gcc 160. elif ${_v:M\(GCC\)} || ${_v:M*GNU} 161${X_}COMPILER_TYPE:= gcc 162. elif ${_v:Mclang} || ${_v:M(clang-*.*.*)} 163${X_}COMPILER_TYPE:= clang 164. else 165.error Unable to determine compiler type for ${cc}=${${cc}}. Consider setting ${X_}COMPILER_TYPE. 166. endif 167.endif 168.if !defined(${X_}COMPILER_VERSION) 169${X_}COMPILER_VERSION!=echo "${_v:M[1-9].[0-9]*}" | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}' 170.endif 171.undef _v 172.endif 173.if !defined(${X_}COMPILER_FREEBSD_VERSION) 174${X_}COMPILER_FREEBSD_VERSION!= { echo "__FreeBSD_cc_version" | ${${cc}} -E - 2>/dev/null || echo __FreeBSD_cc_version; } | sed -n '$$p' 175# If we get a literal "__FreeBSD_cc_version" back then the compiler 176# is a non-FreeBSD build that doesn't support it or some other error 177# occurred. 178.if ${${X_}COMPILER_FREEBSD_VERSION} == "__FreeBSD_cc_version" 179${X_}COMPILER_FREEBSD_VERSION= unknown 180.endif 181.endif 182 183${X_}COMPILER_FEATURES= 184.if ${${X_}COMPILER_TYPE} == "clang" || \ 185 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 40800) 186${X_}COMPILER_FEATURES+= c++11 187.endif 188.if ${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 60000 189${X_}COMPILER_FEATURES+= retpoline 190.endif 191 192.else 193# Use CC's values 194X_COMPILER_TYPE= ${COMPILER_TYPE} 195X_COMPILER_VERSION= ${COMPILER_VERSION} 196X_COMPILER_FREEBSD_VERSION= ${COMPILER_FREEBSD_VERSION} 197X_COMPILER_FEATURES= ${COMPILER_FEATURES} 198.endif # ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC}) 199 200# Export the values so sub-makes don't have to look them up again, using the 201# hash key computed above. 202.for var in ${_exported_vars} 203${var}.${${X_}_cc_hash}:= ${${var}} 204.export-env ${var}.${${X_}_cc_hash} 205.undef ${var}.${${X_}_cc_hash} 206.endfor 207 208.endif # ${cc} == "CC" || !empty(XCC) 209.endfor # .for cc in CC XCC 210 211.include <bsd.linker.mk> 212.endif # !target(__<bsd.compiler.mk>__) 213