# -*- shell-script -*- # # This file should be sourced into configure if the compiler is the # GNU gcc compiler or a derivative. It is careful not to do anything # if the compiler is not GNU; otherwise `cc_flags_set' is set to `yes' # # Get the compiler version in a way that works for gcc, egcs, and # pgcc unless a compiler version is already known # # cc_vendor: The compiler name: gcc, egcs, or pgcc # cc_version: Version number: 2.91.60, 2.7.2.1 # if test X = "X$cc_flags_set"; then cc_version="`$CC $CFLAGS -v 2>&1 |grep 'gcc version' |\ sed 's/.*gcc version \([-a-z0-9\.]*\).*/\1/'`" cc_vendor=`echo $cc_version |sed 's/\([a-z]*\).*/\1/'` cc_version=`echo $cc_version |sed 's/[-a-z]//g'` if test X = "X$cc_vendor" -a X != "X$cc_version"; then cc_vendor=gcc fi if test "-" != "$cc_vendor-$cc_version"; then echo "compiler '$CC' is GNU $cc_vendor-$cc_version" fi # Some version numbers cc_vers_major=`echo $cc_version | cut -f1 -d.` cc_vers_minor=`echo $cc_version | cut -f2 -d.` cc_vers_patch=`echo $cc_version | cut -f3 -d.` test -n "$cc_vers_major" || cc_vers_major=0 test -n "$cc_vers_minor" || cc_vers_minor=0 test -n "$cc_vers_patch" || cc_vers_patch=0 cc_vers_all=`expr $cc_vers_major '*' 1000000 + $cc_vers_minor '*' 1000 + $cc_vers_patch` fi # GCC compilers before gcc-2.8.1 have problems with `long long'. if test gcc = "$cc_vendor" -a "$cc_vers_all" -lt 2008001; then cat < `double' conversions. elif test gcc = "$cc_vendor" -a "$cc_vers_all" -eq 2096000; then cat < long long conversions in the # test/dtypes test). Perhaps later versions of gcc will fix this # bug... - QAK - 2003/10/20 PROD_CFLAGS="-O $NOFP" ;; gcc-3*) # Be optimistic about future versions of gcc.. :-) - QAK - 2003/10/20 PROD_CFLAGS="-O3 $NOFP" ;; *) PROD_CFLAGS="-O $NOFP" ;; esac PROD_CFLAGS="$PROD_CFLAGS -finline-functions" PROD_CPPFLAGS= # Debug DEBUG_CFLAGS="-g -fverbose-asm" DEBUG_CPPFLAGS= # Profile PROFILE_CFLAGS="-g -pg" PROFILE_CPPFLAGS= ;; esac # Version specific GCC flags # # Please follow the pattern below by adding new versions at the top, copying # the information from the previous version and adding modifications to that. case "$cc_vendor-$cc_version" in gcc-3.4*) # Replace -ansi flag with -std=c99 flag CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`" # Disable warnings about using 'long long' type CFLAGS="$CFLAGS -Wno-long-long" # Append warning flags from gcc-3* case CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded" # Append warning flags from gcc-3.2* case CFLAGS="$CFLAGS -Wmissing-noreturn -Wpacked -Wdisabled-optimization -Wmultichar" # The "format=2" warning generates too many warnings about valid # usage in the library. #CFLAGS="$CFLAGS -Wformat=2" # The "unreachable code" warning does not appear to be reliable yet... #CFLAGS="$CFLAGS -Wunreachable-code" # Append warning flags from gcc-3.3* case CFLAGS="$CFLAGS -Wendif-labels" # Append more extra warning flags that only gcc3.4+ know about CFLAGS="$CFLAGS -Wdeclaration-after-statement -Wold-style-definition -Winvalid-pch" # Flags are set cc_flags_set=yes ;; gcc-3.3*) # Replace -ansi flag with -std=c99 flag CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`" # Disable warnings about using 'long long' type CFLAGS="$CFLAGS -Wno-long-long" # Append warning flags from gcc-3* case CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded" # Append warning flags from gcc-3.2* case CFLAGS="$CFLAGS -Wmissing-noreturn -Wpacked -Wdisabled-optimization -Wmultichar" # The "format=2" warning generates too many warnings about valid # usage in the library. #CFLAGS="$CFLAGS -Wformat=2" # The "unreachable code" warning does not appear to be reliable yet... #CFLAGS="$CFLAGS -Wunreachable-code" # Append more extra warning flags that only gcc3.3+ know about CFLAGS="$CFLAGS -Wendif-labels" # Flags are set cc_flags_set=yes ;; gcc-3.2*) # Replace -ansi flag with -std=c99 flag CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`" # Disable warnings about using 'long long' type CFLAGS="$CFLAGS -Wno-long-long" # Append warning flags from gcc-3* case CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded" # Append more extra warning flags that only gcc3.2+ know about CFLAGS="$CFLAGS -Wmissing-noreturn -Wpacked -Wdisabled-optimization -Wmultichar" # The "format=2" warning generates too many warnings about valid # usage in the library. #CFLAGS="$CFLAGS -Wformat=2" # The "unreachable code" warning does not appear to be reliable yet... #CFLAGS="$CFLAGS -Wunreachable-code" # Flags are set cc_flags_set=yes ;; gcc-3*) # Replace -ansi flag with -std=c99 flag CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`" # Disable warnings about using 'long long' type CFLAGS="$CFLAGS -Wno-long-long" # Append some extra warning flags that only gcc3+ know about CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded" # Flags are set cc_flags_set=yes ;; gcc-2.9[56]*) # Disable warnings about using 'long long' type CFLAGS="$CFLAGS -Wno-long-long" # Flags are set cc_flags_set=yes ;; esac # Clear cc info if no flags set if test "X$cc_flags_set" = "X"; then cc_vendor= cc_version= fi