Commit e7050f97 authored by Daniel Stenberg's avatar Daniel Stenberg
Browse files

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

use as aggressive warning options as possible for the used compiler version.
parent b28f3d43

configure.ac

+24 −3
Original line number Diff line number Diff line
@@ -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=""