3 # Setup variables for the compiler
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...
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).
17 # COMPILER_FEATURES will contain one or more of the following, based on
18 # compiler support for that feature:
20 # - c++11 : supports full (or nearly full) C++11 programming environment.
22 # This file may be included multiple times, but only has effect the first time.
25 .if !defined(COMPILER_TYPE) || !defined(COMPILER_VERSION)
26 _v!= ${CC} --version 2>/dev/null || echo 0.0.0
27 .if !defined(COMPILER_TYPE)
30 . elif ${CC:T:M*clang*}
39 .error Unable to determine compiler type for ${CC}. Consider setting COMPILER_TYPE.
42 .if !defined(COMPILER_VERSION)
43 COMPILER_VERSION!=echo "${_v:M[1-9].[0-9]*}" | awk -F. '{print $$1 * 10000 + $$2 * 100 + $$3;}'
48 .if ${COMPILER_TYPE} == "clang" || \
49 (${COMPILER_TYPE} == "gcc" && ${COMPILER_VERSION} >= 40800)
50 COMPILER_FEATURES= c++11