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