diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/Makefile.am | 1 | ||||
| -rw-r--r-- | m4/as-compiler-flag.m4 | 33 | ||||
| -rw-r--r-- | m4/gcov.m4 | 47 |
3 files changed, 81 insertions, 0 deletions
diff --git a/m4/Makefile.am b/m4/Makefile.am new file mode 100644 index 00000000..c2095e8f --- /dev/null +++ b/m4/Makefile.am @@ -0,0 +1 @@ +EXTRA_DIST=gcov.m4 as-compiler.m4 diff --git a/m4/as-compiler-flag.m4 b/m4/as-compiler-flag.m4 new file mode 100644 index 00000000..aba31b1c --- /dev/null +++ b/m4/as-compiler-flag.m4 @@ -0,0 +1,33 @@ +dnl as-compiler-flag.m4 0.1.0 + +dnl autostars m4 macro for detection of compiler flags + +dnl David Schleef <ds@schleef.org> + +dnl $Id: as-compiler-flag.m4,v 1.1 2004/06/01 09:33:45 thomasvs Exp $ + +dnl AS_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED]) +dnl Tries to compile with the given CFLAGS. +dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags, +dnl and ACTION-IF-NOT-ACCEPTED otherwise. + +AC_DEFUN([AS_COMPILER_FLAG], +[ + AC_MSG_CHECKING([to see if compiler understands $1]) + + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $1" + + AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no]) + CFLAGS="$save_CFLAGS" + + if test "X$flag_ok" = Xyes ; then + $2 + true + else + $3 + true + fi + AC_MSG_RESULT([$flag_ok]) +]) + diff --git a/m4/gcov.m4 b/m4/gcov.m4 new file mode 100644 index 00000000..c96eddac --- /dev/null +++ b/m4/gcov.m4 @@ -0,0 +1,47 @@ +AC_DEFUN([GI_ENABLE_GCOV], +[ + AC_ARG_ENABLE(gcov, + AC_HELP_STRING([--enable-gcov], + [compile with coverage profiling instrumentation (gcc only)]), + enable_gcov=$enableval, + enable_gcov=no) + if test x$enable_gcov = xyes ; then + if test "x$GCC" != "xyes" + then + AC_MSG_ERROR([gcov only works if gcc is used]) + fi + + AS_COMPILER_FLAG(["-fprofile-arcs"], + [GCOV_CFLAGS="$GCOV_CFLAGS -fprofile-arcs"], + true) + AS_COMPILER_FLAG(["-ftest-coverage"], + [GCOV_CFLAGS="$GCOV_CFLAGS -ftest-coverage"], + true) + dnl libtool 1.5.22 and lower strip -fprofile-arcs from the flags + dnl passed to the linker, which is a bug; -fprofile-arcs implicitly + dnl links in -lgcov, so we do it explicitly here for the same effect + GCOV_LIBS=-lgcov + AC_SUBST(GCOV_CFLAGS) + AC_SUBST(GCOV_LIBS) + GCOV=`echo $CC | sed s/gcc/gcov/g` + AC_SUBST(GCOV) + + GI_GCOV_ENABLED=yes + AC_DEFINE_UNQUOTED(GI_GCOV_ENABLED, 1, + [Defined if gcov is enabled to force a rebuild due to config.h changing]) + dnl if gcov is used, we do not want default -O2 CFLAGS + if test "x$GI_GCOV_ENABLED" = "xyes" + then + CFLAGS="-g -O0" + AC_SUBST(CFLAGS) + CXXFLAGS="-g -O0" + AC_SUBST(CXXFLAGS) + FFLAGS="-g -O0" + AC_SUBST(FFLAGS) + CCASFLAGS="-g -O0" + AC_SUBST(CCASFLAGS) + AC_MSG_NOTICE([gcov enabled, setting CFLAGS and friends to $CFLAGS]) + fi + fi + AM_CONDITIONAL(GI_GCOV_ENABLED, test x$enable_gcov = xyes) +]) |