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# Try to import COMPILER_TYPE and COMPILER_VERSION from parent make. 29# The value is only used/exported for the same environment that impacts 30# CC and COMPILER_* settings here. 31_exported_vars= COMPILER_TYPE COMPILER_VERSION 32_cc_hash= ${CC}${MACHINE}${PATH} 33_cc_hash:= ${_cc_hash:hash} 34# Only import if none of the vars are set somehow else. 35_can_export= yes 36.for var in ${_exported_vars} 37.if defined(${var}) 38_can_export= no 39.endif 40.endfor 41.if ${_can_export} == yes 42.for var in ${_exported_vars} 43.if defined(${var}.${_cc_hash}) 44${var}= ${${var}.${_cc_hash}} 45.endif 46.endfor 47.endif 48 49.if ${MACHINE} == "common" 50# common is a pseudo machine for architecture independent 51# generated files - thus there is no compiler. 52COMPILER_TYPE= none 53COMPILER_VERSION= 0 54.elif !defined(COMPILER_TYPE) || !defined(COMPILER_VERSION) 55_v!= ${CC} --version 2>/dev/null || echo 0.0.0 56 57.if !defined(COMPILER_TYPE) 58. if ${CC:T:M*gcc*} 59COMPILER_TYPE:= gcc 60. elif ${CC:T:M*clang*} 61COMPILER_TYPE:= clang 62. elif ${_v:Mgcc} 63COMPILER_TYPE:= gcc 64. elif ${_v:M\(GCC\)} 65COMPILER_TYPE:= gcc 66. elif ${_v:Mclang} 67COMPILER_TYPE:= clang 68. else 69.error Unable to determine compiler type for ${CC}. Consider setting COMPILER_TYPE. 70. endif 71.endif 72.if !defined(COMPILER_VERSION) 73COMPILER_VERSION!=echo ${_v:M[1-9].[0-9]*} | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}' 74.endif 75.undef _v 76.endif 77 78# Export the values so sub-makes don't have to look them up again, using the 79# hash key computed above. 80.for var in ${_exported_vars} 81${var}.${_cc_hash}:= ${${var}} 82.export-env ${var}.${_cc_hash} 83.undef ${var}.${_cc_hash} 84.endfor 85 86.if ${COMPILER_TYPE} == "clang" || \ 87 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 40800) 88COMPILER_FEATURES= c++11 89.else 90COMPILER_FEATURES= 91.endif 92 93.endif # !target(__<bsd.compiler.mk>__) 94