xref: /freebsd/share/mk/bsd.compiler.mk (revision 4436b51dff5736e74da464946049ea6899a88938)
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.if ${MACHINE} == "common"
29# common is a pseudo machine for architecture independent
30# generated files - thus there is no compiler.
31COMPILER_TYPE= none
32COMPILER_VERSION= 0
33.elif !defined(COMPILER_TYPE) || !defined(COMPILER_VERSION)
34_v!=	${CC} --version 2>/dev/null || echo 0.0.0
35
36.if !defined(COMPILER_TYPE)
37. if ${CC:T:M*gcc*}
38COMPILER_TYPE:=	gcc
39. elif ${CC:T:M*clang*}
40COMPILER_TYPE:=	clang
41. elif ${_v:Mgcc}
42COMPILER_TYPE:=	gcc
43. elif ${_v:M\(GCC\)}
44COMPILER_TYPE:=	gcc
45. elif ${_v:Mclang}
46COMPILER_TYPE:=	clang
47. else
48.error Unable to determine compiler type for ${CC}.  Consider setting COMPILER_TYPE.
49. endif
50.endif
51.if !defined(COMPILER_VERSION)
52COMPILER_VERSION!=echo ${_v:M[1-9].[0-9]*} | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}'
53.endif
54.undef _v
55.endif
56
57.if ${COMPILER_TYPE} == "clang" || \
58	(${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 40800)
59COMPILER_FEATURES=	c++11
60.else
61COMPILER_FEATURES=
62.endif
63
64.endif	# !target(__<bsd.compiler.mk>__)
65