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++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 26# mitigation. 27# 28# These variables with an X_ prefix will also be provided if XCC is set. 29# 30# This file may be included multiple times, but only has effect the first time. 31# 32 33.if !target(__<bsd.compiler.mk>__) 34__<bsd.compiler.mk>__: 35 36.include <bsd.opts.mk> 37 38# command = /usr/local/bin/ccache cc ... 39# wrapper = /usr/local/libexec/ccache/cc ... 40CCACHE_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. 49LOCALBASE?= /usr/local 50CCACHE_WRAPPER_PATH?= ${LOCALBASE}/libexec/ccache 51CCACHE_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. 55.export CCACHE_BIN 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 60.if defined(${var}) 61${var}:= ${${var}} 62.export ${var} 63.endif 64.endfor 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/*} == "" 70CCACHE_COMPILERCHECK?= content 71.else 72CCACHE_COMPILERCHECK?= mtime 73.endif 74.export CCACHE_COMPILERCHECK 75# Ensure no bogus CCACHE_PATH leaks in which might avoid the in-tree compiler. 76.if !empty(CCACHE_PATH) 77CCACHE_PATH= 78.export CCACHE_PATH 79.endif 80.if ${CCACHE_BUILD_TYPE} == "command" 81# Remove ccache from the PATH to prevent double calls and wasted CPP/LD time. 82PATH:= ${PATH:C,:?${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}} 87.endif 88.endfor 89.else 90# Need to ensure CCACHE_WRAPPER_PATH is the first in ${PATH} 91PATH:= ${PATH:C,:?${CCACHE_WRAPPER_PATH}(/world)?(:$)?,,g} 92PATH:= ${CCACHE_WRAPPER_PATH}:${PATH} 93CCACHE_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" 100CCACHE_NOCPP2= 1 101.export CCACHE_NOCPP2 102.endif 103# Canonicalize CCACHE_DIR for meta mode usage. 104.if !defined(CCACHE_DIR) 105CCACHE_DIR!= ${CCACHE_BIN} -p | awk '$$2 == "cache_dir" {print $$4}' 106.export CCACHE_DIR 107.endif 108.if !empty(CCACHE_DIR) && empty(.MAKE.META.IGNORE_PATHS:M${CCACHE_DIR}) 109CCACHE_DIR:= ${CCACHE_DIR:tA} 110.MAKE.META.IGNORE_PATHS+= ${CCACHE_DIR} 111.export CCACHE_DIR 112.endif 113# ccache doesn't affect build output so let it slide for meta mode 114# comparisons. 115.MAKE.META.IGNORE_PATHS+= ${CCACHE_BIN} 116ccache-print-options: .PHONY 117 @${CCACHE_BIN} -p 118.endif # exists(${CCACHE_BIN}) 119.endif # ${MK_CCACHE_BUILD} == "yes" 120 121.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. 131_can_export= yes 132.for var in ${_exported_vars} 133.if defined(${var}) 134_can_export= no 135.endif 136.endfor 137.if ${_can_export} == yes 138.for var in ${_exported_vars} 139.if defined(${var}.${${X_}_cc_hash}) 140${var}= ${${var}.${${X_}_cc_hash}} 141.endif 142.endfor 143.endif 144 145.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${CCACHE_BIN}} --version || echo 0.0.0 154 155.if !defined(${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 160. elif ${_v:Mgcc} 161${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 166. else 167.error Unable to determine compiler type for ${cc}=${${cc}}. Consider setting ${X_}COMPILER_TYPE. 168. endif 169.endif 170.if !defined(${X_}COMPILER_VERSION) 171${X_}COMPILER_VERSION!=echo "${_v:M[1-9]*.[0-9]*}" | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}' 172.endif 173.undef _v 174.endif 175.if !defined(${X_}COMPILER_FREEBSD_VERSION) 176${X_}COMPILER_FREEBSD_VERSION!= { echo "__FreeBSD_cc_version" | ${${cc}:N${CCACHE_BIN}} -E - 2>/dev/null || echo __FreeBSD_cc_version; } | sed -n '$$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 179# occurred. 180.if ${${X_}COMPILER_FREEBSD_VERSION} == "__FreeBSD_cc_version" 181${X_}COMPILER_FREEBSD_VERSION= unknown 182.endif 183.endif 184 185${X_}COMPILER_FEATURES= 186.if (${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 30300) || \ 187 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 40800) 188${X_}COMPILER_FEATURES+= c++11 189.endif 190.if (${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 30400) || \ 191 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 50000) 192${X_}COMPILER_FEATURES+= c++14 193.endif 194.if (${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 50000) || \ 195 (${${X_}COMPILER_TYPE} == "gcc" && ${${X_}COMPILER_VERSION} >= 70000) 196${X_}COMPILER_FEATURES+= c++17 197.endif 198.if ${${X_}COMPILER_TYPE} == "clang" && ${${X_}COMPILER_VERSION} >= 60000 199${X_}COMPILER_FEATURES+= retpoline 200.endif 201 202.else 203# Use CC's values 204X_COMPILER_TYPE= ${COMPILER_TYPE} 205X_COMPILER_VERSION= ${COMPILER_VERSION} 206X_COMPILER_FREEBSD_VERSION= ${COMPILER_FREEBSD_VERSION} 207X_COMPILER_FEATURES= ${COMPILER_FEATURES} 208.endif # ${cc} == "CC" || (${cc} == "XCC" && ${XCC} != ${CC}) 209 210# 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} 216.endfor 217 218.endif # ${cc} == "CC" || !empty(XCC) 219.endfor # .for cc in CC XCC 220 221.if !defined(_NO_INCLUDE_LINKERMK) 222.include <bsd.linker.mk> 223.endif 224.endif # !target(__<bsd.compiler.mk>__) 225