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|
# -*- 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 "$cc_vers_all" -lt 2008001; then
cat <<EOF
**
** This compiler may be unable to properly compile the long long
** data type used extensively by hdf5, although specifying
** --disable-hsizet for configure may work around those bugs.
** There may be other code generation problems also, especially
** when optimizations are enabled. Please upgrade to at least GNU
** gcc version 2.8.1 before reporting bugs to the HDF5 team.
**
EOF
sleep 5
# GCC v2.96 (shipped with RH7.x) has problems with `float'-> `double' conversions.
elif test gcc = "$cc_vendor" -a "$cc_vers_all" -eq 2096000; then
cat <<EOF
**
** This compiler may have problems converting 'float' values to
** 'double' values. There may be other code generation problems
** as well.
**
** Please use a different version of gcc before reporting bugs.
**
EOF
sleep 5
# Current EGCS compilers have problems with `long long' and register
# allocation when optimizations are turned on for x86 systems.
elif test egcs = "$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
# Common GCC flags for various situations
case "$cc_vendor-$cc_version" in
gcc*|egcs*|pgcc*)
# Architecture-specific flags
arch=
case "$host_os-$host_cpu" in
# FreeBSD sets the information from "uname -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*-i386)
host_cpu_model=`sysctl -n hw.model`
case "$host_cpu_model" in
# Hmm.. this might not catch Celerons, but it won't hurt them either...
*Pro*|*II*|*III*|*IV*|*Athlon*)
arch="-march=i686"
;;
esac
;;
*-i686)
arch="-march=i686"
;;
esac
# Host-specific flags
case "`hostname`" in
sleipnir.ncsa.uiuc.edu)
arch="$arch -pipe"
;;
esac
# 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-$cc_version" in
gcc-2.95.[34])
PROD_CFLAGS="-O3"
;;
gcc-3.[0-4]*)
# The optimization level is reduced for gcc 3.* due to problems
# with code generation for src/H5Tconv.c with the -O2 & -O3
# optimization levels for gcc 3.2.2 and gcc 3.3.2 (which shows up as
# failures for various integer types -> long long conversions in the
# test/dtypes test). Perhaps later versions of gcc will fix this
# bug... - QAK - 2003/10/20
PROD_CFLAGS="-O"
;;
gcc-3*)
# Be optimistic about future versions of gcc.. :-) - QAK - 2003/10/20
PROD_CFLAGS="-O3"
;;
*)
PROD_CFLAGS="-O"
;;
esac
PROD_CFLAGS="$PROD_CFLAGS -fomit-frame-pointer -finline-functions"
PROD_CPPFLAGS=
# Debug
DEBUG_CFLAGS="-g -fverbose-asm"
DEBUG_CPPFLAGS=
# Profile
PROFILE_CFLAGS="-g -pg"
PROFILE_CPPFLAGS=
# Flags are set
cc_flags_set=yes
;;
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"
;;
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"
;;
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"
;;
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="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded"
;;
gcc-2.9[56]*)
# Disable warnings about using 'long long' type
CFLAGS="$CFLAGS -Wno-long-long"
;;
esac
# Clear cc info if no flags set
if test "X$cc_flags_set" = "X"; then
cc_vendor=
cc_version=
fi
|
