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If --enable-debug is used and gcc, we figure out which version and then we

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use as aggressive warning options as possible for the used compiler version.
This commit is contained in:
Daniel Stenberg 2004-02-19 09:01:13 +00:00
parent b28f3d43bf
commit e7050f97c4
1 changed files with 24 additions and 3 deletions
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27
configure.ac
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@ -1176,10 +1176,31 @@ AC_HELP_STRING([--disable-debug],[Disable debug options]),
CPPFLAGS="$CPPFLAGS -DCURLDEBUG"
CFLAGS="$CFLAGS -g"
if test "$GCC" = "yes"; then
CFLAGS="$CFLAGS -W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wno-format-nonliteral -Wundef -Wpointer-arith -Wnested-externs"
dnl here's a more aggressive set to use:
dnl CFLAGS="$CFLAGS -W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wundef -Wpointer-arith -Wnested-externs -Wcast-align -Winline -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -Wshadow -Wfloat-equal -Wsign-compare -Wunreachable-code"
dnl figure out gcc version!
AC_MSG_CHECKING([gcc version])
gccver=`$CC -dumpversion`
num1=`echo $gccver | cut -d . -f1`
num2=`echo $gccver | cut -d . -f2`
gccnum=`(expr $num1 "*" 100 + $num2) 2>/dev/null`
AC_MSG_RESULT($gccver)
dnl here's the standard setup
WARN="-W -Wall -Wwrite-strings -pedantic -Wno-long-long -Wno-format-nonliteral -Wundef -Wpointer-arith -Wnested-externs -Wcast-align -Winline -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -Wsign-compare"
if test "$gccnum" -ge "296"; then
dnl gcc 2.96 or later
WARN="$WARN -Wfloat-equal"
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"
fi
fi
CFLAGS="$CFLAGS $WARN"
fi
dnl strip off optimizer flags
NEWFLAGS=""