- AC_EGREP_CPP([bummer], [
- #ifdef __NO_INLINE__
- bummer
- #endif
- ], [gl_cv_c_inline_effective=no], [gl_cv_c_inline_effective=yes])
+ dnl Use AC_COMPILE_IFELSE here, not AC_EGREP_CPP, because the result
+ dnl depends on optimization flags, which can be in CFLAGS.
+ dnl (AC_EGREP_CPP looks only at the CPPFLAGS.)
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[]],
+ [[#ifdef __NO_INLINE__
+ #error "inline is not effective"
+ #endif]])],
+ [gl_cv_c_inline_effective=yes],
+ [gl_cv_c_inline_effective=no])