On May 1, 2013, at 8:39 AM, Leif Hedstrom <zw...@apache.org> wrote: > On 5/1/13 6:58 AM, James Peach wrote: >> On May 1, 2013, at 12:48 AM, Igor Galić <i.ga...@brainsware.org> wrote: >> >>> Following this basic idea here >>> >>> >>> http://nadeausoftware.com/articles/2012/10/c_c_tip_how_detect_compiler_name_and_version_using_compiler_predefined_macros >>> >>> I'd like to add a build/base_compiler.m4 - that runs this program: >>> >>> # include <stdio.h> >>> int main (void) { >>> printf ( >>> #if defined(__clang__) >>> "clang" >>> #elif defined (__GNUC__) || defined (__GNUG__) >>> "gcc" >>> #elif defined (__SUNPRO_C) || defined (__SUNPRO_CC) >>> "sunproc" >>> #elif defined (__ICC) || defined(__INTEL_COMPILER) >>> "icc" >>> #endif >>> ); >>> return 0; >>> } > > > In addition to what James said, I think order could matter here. Like, I > suspect that ICC might define some of the gcc flags in its "compatibility" > mode. As such, I'd imagine you ought to test for most specific first (e.g. > icc then sunpro then clang and last gcc) ?
Yeh, the order matters ... clang masquerades as GCC pretty thoroughly J
