Mercurial > dovecot > core-2.2
changeset 4826:53ff1a59cdd5 HEAD
Enable -Wstrict-aliasing=2 with gcc 4.
| author | Timo Sirainen <tss@iki.fi> |
|---|---|
| date | Sat, 18 Nov 2006 16:12:34 +0200 |
| parents | 66287003e3cc |
| children | 966f7b3fb03c |
| files | configure.in |
| diffstat | 1 files changed, 10 insertions(+), 2 deletions(-) [+] |
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--- a/configure.in Sat Nov 18 16:11:40 2006 +0200 +++ b/configure.in Sat Nov 18 16:12:34 2006 +0200 @@ -352,12 +352,20 @@ dnl * gcc specific options if test "x$ac_cv_c_compiler_gnu" = "xyes"; then - # -Wcast-qual -Wcast-align -Wconversion # too many warnings + # -Wcast-qual -Wcast-align -Wconversion -Wunreachable-code # too many warnings # -Wstrict-prototypes -Wredundant-decls # may give warnings in some systems # -Wmissing-format-attribute -Wmissing-noreturn -Wwrite-strings # a couple of warnings - # -Wstrict-aliasing=2 # requires new gcc CFLAGS="$CFLAGS -Wall -W -Wmissing-prototypes -Wmissing-declarations -Wpointer-arith -Wchar-subscripts -Wformat=2 -Wbad-function-cast" + AC_TRY_COMPILE([ + #if __GNUC__ < 4 + # error old gcc + #endif + ],,[ + # gcc4 + CFLAGS="$CFLAGS -Wstrict-aliasing=2" + ]) + # Use std=gnu99 if we have new enough gcc old_cflags=$CFLAGS CFLAGS="-std=gnu99"