1# $FreeBSD: releng/10.3/share/mk/bsd.compiler.mk 293109 2016-01-03 17:19:17Z dim $
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 !defined(COMPILER_TYPE) || !defined(COMPILER_VERSION)
26_v!=	${CC} --version 2>/dev/null || echo 0.0.0
27.if !defined(COMPILER_TYPE)
28. if ${CC:T:M*gcc*}
29COMPILER_TYPE:=	gcc  
30. elif ${CC:T:M*clang*}
31COMPILER_TYPE:=	clang
32. elif ${_v:Mgcc}
33COMPILER_TYPE:=	gcc
34. elif ${_v:M\(GCC\)}
35COMPILER_TYPE:=	gcc
36. elif ${_v:Mclang}
37COMPILER_TYPE:=	clang
38. else
39.error Unable to determine compiler type for ${CC}.  Consider setting COMPILER_TYPE.
40. endif
41.endif
42.if !defined(COMPILER_VERSION)
43COMPILER_VERSION!=echo "${_v:M[1-9].[0-9]*}" | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}'
44.endif
45.undef _v
46.endif
47
48.if ${COMPILER_TYPE} == "clang" || \
49	(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 40800)
50COMPILER_FEATURES=	c++11
51.else
52COMPILER_FEATURES=
53.endif
54