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