http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49797
Summary: CLooG use of LANGUAGE_C conflicts with MIPS compilers Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: bootstrap AssignedTo: unassig...@gcc.gnu.org ReportedBy: r...@gcc.gnu.org CC: s...@gcc.gnu.org Host: mips-sgi-irix6.5 Target: mips-sgi-irix6.5 Build: mips-sgi-irix6.5 When trying a mips-sgi-irix6.5 bootstrap with C++ in stages 2 and 3, I failed due to an issue that had been hidden previously: I'm building with ppl/cloog. Building ClooG initially failed since gcc (or any compiler on MIPS) predefines LANGUAGE_C, which is also used by <cloog/pprint.h>. As a hack, I renamed those defines to CLOOG_LANGUAGE_C and CLOOG_LANGUAGE_FORTRAN, not noticing that graphite-clast-to-gimple.c has a use of LANGUAGE_C and now got the wrong value. When compiling with g++, LANGUAGE_C isn't defined any longer and the build breaks: /vol/gcc/src/hg/trunk/local/gcc/graphite-clast-to-gimple.c: In function 'CloogOptions* set_cloog_options()': /vol/gcc/src/hg/trunk/local/gcc/graphite-clast-to-gimple.c:1309:23: error: 'LANGUAGE_C' was not declared in this scope make[3]: *** [graphite-clast-to-gimple.o] Error 1 The question is how best to fix this? One might change upstream CLooG to use CLOOG_LANGUAGE_C instead to avoid the clash, test for that in graphite-clast-to-gimple.c and require MIPS users to upgrade or fix their local copies?