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Perhaps -Wundef is better on gcc versions after 2.95, since the autobuild

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on FreeBSD gives us lots of warnings in system headers and I suspect this
option is what causes them!
This commit is contained in:
Daniel Stenberg 2004-03-01 13:10:35 +00:00
parent 193a652e6a
commit 6789dfc5f5
1 changed files with 23 additions and 14 deletions
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19
acinclude.m4
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@ -518,14 +518,22 @@ AC_DEFUN([CURL_CC_DEBUG_OPTS],
WARN="-Wall $WARN" WARN="-Wall $WARN"
fi fi
else dnl $ICC = yes else dnl $ICC = yes
dnl dnl this is a set of options we believe *ALL* gcc versions support:
WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wundef -Wpointer-arith -Wnested-externs -Winline -Wmissing-declarations -Wmissing-prototypes -Wsign-compare" WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wpointer-arith -Wnested-externs -Winline -Wmissing-declarations -Wmissing-prototypes -Wsign-compare"
dnl -Wcast-align is a bit too annoying ;-) dnl -Wcast-align is a bit too annoying on all gcc versions ;-)
if test "$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 if test "$gccnum" -ge "296"; then
dnl gcc 2.96 or later dnl gcc 2.96 or later
WARN="$WARN -Wfloat-equal" WARN="$WARN -Wfloat-equal"
fi
if test "$gccnum" -gt "296"; then if test "$gccnum" -gt "296"; then
dnl this option does not exist in 2.96 dnl this option does not exist in 2.96
@ -538,12 +546,13 @@ AC_DEFUN([CURL_CC_DEBUG_OPTS],
dnl gcc 3.3 and later dnl gcc 3.3 and later
WARN="$WARN -Wendif-labels -Wstrict-prototypes" WARN="$WARN -Wendif-labels -Wstrict-prototypes"
fi fi
fi
for flag in $CPPFLAGS; do for flag in $CPPFLAGS; do
case "$flag" in case "$flag" in
-I*) -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'` add=`echo $flag | sed 's/^-I/-isystem /g'`
WARN="$WARN $add" WARN="$WARN $add"
;; ;;