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