diff options
Diffstat (limited to 'gcc/configure.in')
| -rw-r--r-- | gcc/configure.in | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/gcc/configure.in b/gcc/configure.in index a821343..ac95b4b 100644 --- a/gcc/configure.in +++ b/gcc/configure.in @@ -329,15 +329,30 @@ AC_SUBST(NO_MINUS_C_MINUS_O) gcc_AC_C_LONG_DOUBLE +AC_MSG_CHECKING(whether ${CC-cc} accepts -Wno-long-long) +echo 'void f(){}' > conftest.c +if test -z "`${CC-cc} -Wno-long-long -c conftest.c 2>&1`"; then + ac_cv_prog_cc_no_long_long=yes +else + ac_cv_prog_cc_no_long_long=no +fi +rm -f conftest* +echo "$ac_t"$ac_cv_prog_cc_no_long_long 1>&6 + # If the native compiler is GCC, we can enable warnings even in stage1. # That's useful for people building cross-compilers, or just running a # quick `make'. +stage1_warn_cflags=" -W -Wall -Wtraditional -Wwrite-strings" +stage2_warn_cflags="$stage1_warn_cflags -pedantic -Wno-long-long" if test "x$GCC" = "xyes"; then - stage1_warn_cflags='$(WARN_CFLAGS)' + if test $ac_cv_prog_cc_no_long_long = yes; then + stage1_warn_cflags="$stage1_warn_cflags -pedantic -Wno-long-long" + fi else stage1_warn_cflags="" fi AC_SUBST(stage1_warn_cflags) +AC_SUBST(stage2_warn_cflags) AC_PROG_MAKE_SET |