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