# -*- 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 "$cc_vers_all" -lt 2008001; then cat <<EOF ** ** This compiler may be unable to properly compile the long long ** data type used extensively by hdf5, although specifying ** --disable-hsizet for configure may work around those bugs. ** There may be other code generation problems also, especially ** when optimizations are enabled. Please upgrade to at least GNU ** gcc version 2.8.1 before reporting bugs to the HDF5 team. ** EOF sleep 5 # Current EGCS compilers have problems with `long long' and register # allocation when optimizations are turned on for x86 systems. elif test egcs = "$cc_vendor" -a "$cc_vers_all" -le 2091066; then if test "$HSIZET" != "large"; then cat <<EOF ** ** This compiler may have problems allocating registers when ** optimizations are enabled on some platforms. Specifying ** --disable-hsizet usually avoids the bug. ** EOF sleep 5 fi # All current versions of PGCC have problems also. elif test pgcc = "$cc_vendor" -a "$cc_vers_all" -le 2091066; then cat <<EOF ** ** This compiler may have problems allocating registers for long ** long data types when optimizations are enabled. There may be ** other code generation problems as well. We know of no version ** of pgcc which is capable of compiling HDF5 in production mode. ** Please use gcc-2.8 or egcs-1.1.1 before reporting bugs. ** EOF sleep 5 fi # Architecture-specific flags case "$host_os-$host_cpu" in # FreeBSD sets the information from "hostname -m" to the general machine # architecture, not the specific CPU for the machine, so even our # Pentium II Xeon server is set to "i386". Once we know we are on a FreeBSD # machine, use the "sysctl" command to get the CPU hardware model. freebsd*) host_cpu_model=`sysctl -n hw.model` case "$host_cpu_model" in # Hmm.. this might not catch Celerons, but it won't hurt them either... *Pro*|*II*|*III*|*IV*|*Athlon*) ARCH=${ARCH:="-march=i686"} ;; esac ;; *-i686) ARCH=${ARCH:="-march=i686"} ;; esac # Host-specific flags case "`hostname`" in sleipnir.ncsa.uiuc.edu) # case "$cc_vendor-$cc_version" in # gcc-3*) # ARCH="`echo $ARCH | sed -e 's/i686/athlon-mp/g'`" # ;; # esac ARCH="$ARCH -pipe" ;; esac # Common GCC flags for various situations case "$cc_vendor-$cc_version" in gcc*|egcs*|pgcc*) # General CFLAGS="$CFLAGS $ARCH -ansi -pedantic -Wall -W -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline" # Production case "$cc_vendor-$cc_version" in gcc-2.95.[34]) PROD_CFLAGS="-O3 $NOFP" ;; gcc-3.[0-3]*) # The optimization level is reduced for gcc 3.* due to problems # with code generation for src/H5Tconv.c with the -O2 & -O3 # optimization levels for gcc 3.2.2 and gcc 3.3.2 (which shows up as # failures for various integer types -> 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 $NOFP -finline-functions" ;; esac PROD_CPPFLAGS= # Debug DEBUG_CFLAGS="-g -fverbose-asm" DEBUG_CPPFLAGS= # Profile PROFILE_CFLAGS=-pg PROFILE_CPPFLAGS= ;; esac # Version specific GCC flags # # Please follow the pattern below by adding new versions at the top, copying # the information from the previous version and adding modifications to that. case "$cc_vendor-$cc_version" in gcc-3.3*) # Replace -ansi flag with -std=c99 flag CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`" # Append warning flags from gcc-2.95.* case CFLAGS="$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" # 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 $CFLAGS | sed -e 's/-ansi/-std=c99/g'`" # Append warning flags from gcc-2.95.* case CFLAGS="$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" # 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 $CFLAGS | sed -e 's/-ansi/-std=c99/g'`" # Append warning flags from gcc-2.95.* case CFLAGS="$CFLAGS -Wno-long-long" # Append some extra warning flags that only gcc3+ know about CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded" # Flags are set cc_flags_set=yes ;; gcc-2.95*) # Append some extra warning flags that only gcc2.95+ know about CFLAGS="$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