Mercurial > dovecot > core-2.2
diff configure.in @ 14101:671b637e20db
configure: Avoid some unnecessary warnings with clang.
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Thu, 09 Feb 2012 15:53:18 +0200 |
| parents | 4b783711a22e |
| children | e3565b3f9efe |
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--- a/configure.in Thu Feb 09 05:33:54 2012 +0200 +++ b/configure.in Thu Feb 09 15:53:18 2012 +0200 @@ -294,6 +294,12 @@ xfs/xqm.h execinfo.h ucontext.h malloc_np.h sys/utsname.h sys/vmount.h \ sys/utsname.h glob.h linux/falloc.h ucred.h) +dnl * clang check +have_clang=no +if $CC -dM -E -x c /dev/null | grep __clang__ > /dev/null 2>&1; then + have_clang=yes +fi + dnl * gcc specific options if test "x$ac_cv_c_compiler_gnu" = "xyes"; then # -Wcast-qual -Wcast-align -Wconversion -Wunreachable-code # too many warnings @@ -301,8 +307,10 @@ # -Wmissing-format-attribute -Wmissing-noreturn -Wwrite-strings # a couple of warnings CFLAGS="$CFLAGS -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast" - # This is simply to avoid warning when building strftime() wrappers.. - CFLAGS="$CFLAGS -fno-builtin-strftime" + if test "$have_clang" != "yes"; then + # This is simply to avoid warning when building strftime() wrappers.. + CFLAGS="$CFLAGS -fno-builtin-strftime" + fi AC_TRY_COMPILE([ #if __GNUC__ < 4 @@ -323,7 +331,7 @@ CFLAGS="$old_cflags" ]) fi -if $CC -dM -E -x c /dev/null | grep __clang__ > /dev/null 2>&1; then +if test "$have_clang" = "yes"; then # clang specific options if test "$want_devel_checks" = "yes"; then CFLAGS="$CFLAGS -fcatch-undefined-behavior -ftrapv"