mirror of
https://github.com/HDFGroup/hdf5.git
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250 lines
7.8 KiB
Bash
250 lines
7.8 KiB
Bash
# -*- shell-script -*-
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#
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# This file should be sourced into configure if the compiler is the
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# GNU gcc compiler or a derivative. It is careful not to do anything
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# if the compiler is not GNU; otherwise `cc_flags_set' is set to `yes'
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#
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# Get the compiler version in a way that works for gcc, egcs, and
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# pgcc unless a compiler version is already known
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#
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# cc_vendor: The compiler name: gcc, egcs, or pgcc
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# cc_version: Version number: 2.91.60, 2.7.2.1
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#
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if test X = "X$cc_flags_set"; then
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cc_version="`$CC $CFLAGS -v 2>&1 |grep 'gcc version' |\
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sed 's/.*gcc version \([-a-z0-9\.]*\).*/\1/'`"
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cc_vendor=`echo $cc_version |sed 's/\([a-z]*\).*/\1/'`
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cc_version=`echo $cc_version |sed 's/[-a-z]//g'`
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if test X = "X$cc_vendor" -a X != "X$cc_version"; then
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cc_vendor=gcc
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fi
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if test "-" != "$cc_vendor-$cc_version"; then
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echo "compiler '$CC' is GNU $cc_vendor-$cc_version"
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fi
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# Some version numbers
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cc_vers_major=`echo $cc_version | cut -f1 -d.`
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cc_vers_minor=`echo $cc_version | cut -f2 -d.`
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cc_vers_patch=`echo $cc_version | cut -f3 -d.`
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test -n "$cc_vers_major" || cc_vers_major=0
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test -n "$cc_vers_minor" || cc_vers_minor=0
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test -n "$cc_vers_patch" || cc_vers_patch=0
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cc_vers_all=`expr $cc_vers_major '*' 1000000 + $cc_vers_minor '*' 1000 + $cc_vers_patch`
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fi
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# GCC compilers before gcc-2.8.1 have problems with `long long'.
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if test gcc = "$cc_vendor" -a "$cc_vers_all" -lt 2008001; then
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cat <<EOF
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**
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** This compiler may be unable to properly compile the long long
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** data type used extensively by hdf5, although specifying
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** --disable-hsizet for configure may work around those bugs.
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** There may be other code generation problems also, especially
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** when optimizations are enabled. Please upgrade to at least GNU
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** gcc version 2.8.1 before reporting bugs to the HDF5 team.
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**
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EOF
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sleep 5
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# GCC v2.96 (shipped with RH7.x) has problems with `float'-> `double' conversions.
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elif test gcc = "$cc_vendor" -a "$cc_vers_all" -eq 2096000; then
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cat <<EOF
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**
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** This compiler may have problems converting 'float' values to
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** 'double' values. There may be other code generation problems
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** as well.
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**
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** Please use a different version of gcc before reporting bugs.
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**
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EOF
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sleep 5
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# Current EGCS compilers have problems with `long long' and register
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# allocation when optimizations are turned on for x86 systems.
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elif test egcs = "$cc_vendor" -a "$cc_vers_all" -le 2091066; then
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if test "$HSIZET" != "large"; then
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cat <<EOF
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**
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** This compiler may have problems allocating registers when
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** optimizations are enabled on some platforms. Specifying
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** --disable-hsizet usually avoids the bug.
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**
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EOF
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sleep 5
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fi
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# All current versions of PGCC have problems also.
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elif test pgcc = "$cc_vendor" -a "$cc_vers_all" -le 2091066; then
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cat <<EOF
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**
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** This compiler may have problems allocating registers for long
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** long data types when optimizations are enabled. There may be
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** other code generation problems as well. We know of no version
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** of pgcc which is capable of compiling HDF5 in production mode.
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** Please use gcc-2.8 or egcs-1.1.1 before reporting bugs.
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**
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EOF
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sleep 5
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fi
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# Architecture-specific flags
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case "$host_os-$host_cpu" in
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# FreeBSD sets the information from "hostname -m" to the general machine
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# architecture, not the specific CPU for the machine, so even our
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# Pentium II Xeon server is set to "i386". Once we know we are on a FreeBSD
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# machine, use the "sysctl" command to get the CPU hardware model.
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freebsd*)
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host_cpu_model=`sysctl -n hw.model`
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case "$host_cpu_model" in
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# Hmm.. this might not catch Celerons, but it won't hurt them either...
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*Pro*|*II*|*III*|*IV*|*Athlon*)
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ARCH=${ARCH:="-march=i686"}
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;;
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esac
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;;
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*-i686)
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ARCH=${ARCH:="-march=i686"}
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;;
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esac
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# Host-specific flags
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case "`hostname`" in
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sleipnir.ncsa.uiuc.edu)
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# case "$cc_vendor-$cc_version" in
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# gcc-3*)
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# ARCH="`echo $ARCH | sed -e 's/i686/athlon-mp/g'`"
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# ;;
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# esac
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ARCH="$ARCH -pipe"
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;;
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esac
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# Common GCC flags for various situations
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case "$cc_vendor-$cc_version" in
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gcc*|egcs*|pgcc*)
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# General
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CFLAGS="$CFLAGS $ARCH -ansi -pedantic -Wall -W -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline"
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# Production
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case "$cc_vendor-$cc_version" in
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gcc-2.95.[34])
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PROD_CFLAGS="-O3 $NOFP"
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;;
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gcc-3.[0-3]*)
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# The optimization level is reduced for gcc 3.* due to problems
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# with code generation for src/H5Tconv.c with the -O2 & -O3
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# optimization levels for gcc 3.2.2 and gcc 3.3.2 (which shows up as
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# failures for various integer types -> long long conversions in the
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# test/dtypes test). Perhaps later versions of gcc will fix this
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# bug... - QAK - 2003/10/20
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PROD_CFLAGS="-O $NOFP"
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;;
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gcc-3*)
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# Be optimistic about future versions of gcc.. :-) - QAK - 2003/10/20
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PROD_CFLAGS="-O3 $NOFP"
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;;
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*)
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PROD_CFLAGS="-O $NOFP -finline-functions"
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;;
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esac
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PROD_CPPFLAGS=
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# Debug
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DEBUG_CFLAGS="-g -fverbose-asm"
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DEBUG_CPPFLAGS=
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# Profile
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PROFILE_CFLAGS=-pg
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PROFILE_CPPFLAGS=
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;;
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esac
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# Version specific GCC flags
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#
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# Please follow the pattern below by adding new versions at the top, copying
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# the information from the previous version and adding modifications to that.
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case "$cc_vendor-$cc_version" in
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gcc-3.3*)
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# Replace -ansi flag with -std=c99 flag
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CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`"
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# Append warning flags from gcc-2.95.* case
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CFLAGS="$CFLAGS -Wno-long-long"
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# Append warning flags from gcc-3* case
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CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded"
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# Append warning flags from gcc-3.2* case
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CFLAGS="$CFLAGS -Wmissing-noreturn -Wpacked -Wdisabled-optimization"
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# The "format=2" warning generates too many warnings about valid
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# usage in the library.
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#CFLAGS="$CFLAGS -Wformat=2"
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# The "unreachable code" warning does not appear to be reliable yet...
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#CFLAGS="$CFLAGS -Wunreachable-code"
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# Append more extra warning flags that only gcc3.3+ know about
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CFLAGS="$CFLAGS -Wendif-labels"
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# Flags are set
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cc_flags_set=yes
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;;
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gcc-3.2*)
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# Replace -ansi flag with -std=c99 flag
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CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`"
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# Append warning flags from gcc-2.95.* case
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CFLAGS="$CFLAGS -Wno-long-long"
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# Append warning flags from gcc-3* case
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CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded"
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# Append more extra warning flags that only gcc3.2+ know about
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CFLAGS="$CFLAGS -Wmissing-noreturn -Wpacked -Wdisabled-optimization"
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# The "format=2" warning generates too many warnings about valid
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# usage in the library.
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#CFLAGS="$CFLAGS -Wformat=2"
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# The "unreachable code" warning does not appear to be reliable yet...
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#CFLAGS="$CFLAGS -Wunreachable-code"
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# Flags are set
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cc_flags_set=yes
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;;
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gcc-3*)
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# Replace -ansi flag with -std=c99 flag
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CFLAGS="`echo $CFLAGS | sed -e 's/-ansi/-std=c99/g'`"
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# Append warning flags from gcc-2.95.* case
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CFLAGS="$CFLAGS -Wno-long-long"
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# Append some extra warning flags that only gcc3+ know about
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CFLAGS="$CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded"
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# Flags are set
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cc_flags_set=yes
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;;
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gcc-2.95*)
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# Append some extra warning flags that only gcc2.95+ know about
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CFLAGS="$CFLAGS -Wno-long-long"
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# Flags are set
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cc_flags_set=yes
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;;
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esac
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# Clear cc info if no flags set
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if test "X$cc_flags_set" = "X"; then
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cc_vendor=
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cc_version=
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fi
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