diff options
| -rw-r--r-- | acinclude.m4 | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 84fbff929..251592dc1 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -518,32 +518,41 @@ AC_DEFUN([CURL_CC_DEBUG_OPTS], WARN="-Wall $WARN" fi else dnl $ICC = yes - dnl - WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wundef -Wpointer-arith -Wnested-externs -Winline -Wmissing-declarations -Wmissing-prototypes -Wsign-compare" + dnl this is a set of options we believe *ALL* gcc versions support: + WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wpointer-arith -Wnested-externs -Winline -Wmissing-declarations -Wmissing-prototypes -Wsign-compare" - dnl -Wcast-align is a bit too annoying ;-) + dnl -Wcast-align is a bit too annoying on all gcc versions ;-) + + if test "$gccnum" -gt "295"; then + dnl only if the compiler is newer than 2.95 since we got lots of + dnl "`_POSIX_C_SOURCE' is not defined" in system headers with + dnl gcc 2.95.4 on FreeBSD 4.9! + WARN="$WARN -Wundef" + fi if test "$gccnum" -ge "296"; then dnl gcc 2.96 or later WARN="$WARN -Wfloat-equal" + fi + + if test "$gccnum" -gt "296"; then + dnl this option does not exist in 2.96 + WARN="$WARN -Wno-format-nonliteral" + fi - if test "$gccnum" -gt "296"; then - dnl this option does not exist in 2.96 - WARN="$WARN -Wno-format-nonliteral" - fi - - dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on - dnl on i686-Linux as it gives us heaps with false positives - if test "$gccnum" -ge "303"; then - dnl gcc 3.3 and later - WARN="$WARN -Wendif-labels -Wstrict-prototypes" - fi + dnl -Wunreachable-code seems totally unreliable on my gcc 3.3.2 on + dnl on i686-Linux as it gives us heaps with false positives + if test "$gccnum" -ge "303"; then + dnl gcc 3.3 and later + WARN="$WARN -Wendif-labels -Wstrict-prototypes" fi for flag in $CPPFLAGS; do case "$flag" in -I*) - dnl include path + dnl Include path, provide a -isystem option for the same dir + dnl to prevent warnings in those dirs. The -isystem was not very + dnl reliable on earlier gcc versions. add=`echo $flag | sed 's/^-I/-isystem /g'` WARN="$WARN $add" ;; |