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174f4275ba
* Avoid maintenance headaches: delete the `noerror-` variants of the compiler flags files, since they essentially duplicate the `error-` files modulo the replacement of `-Werror=` with `-W` and any changes in comments. (I verified the duplication with a script.) For autoconf, reinstate the use of the `demote_errors` shell function to derive the `noerror-` content from the `error-` content. `demote_errors` replaces `-Werror=` with `-W` when `WARNINGS_AS_ERRORS` is `no`. Slightly reorder `configure.ac` so that the setting of `WARNINGS_AS_ERRORS` takes effect before the `error-` files are sourced. * Take a stab at updating the CMake files to match the changes I made to the autoconf files to remove `noerror-` files. I'm not much of a CMake user so these changes are quite rough. Looks like the duplication can be reduced with the introduction of a new macro. * Delete `noerror-` files from the MANIFEST. * Reduce duplication in the CMake files: perform the HDF5_ENABLE_WARNINGS_AS_ERRORS test once in the ADD_H5_FLAGS macro. * Add a release note.
295 lines
9.0 KiB
Bash
295 lines
9.0 KiB
Bash
# -*- shell-script -*-
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#
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# Copyright by The HDF Group.
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# Copyright by the Board of Trustees of the University of Illinois.
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# All rights reserved.
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#
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# This file is part of HDF5. The full HDF5 copyright notice, including
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# terms governing use, modification, and redistribution, is contained in
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# the COPYING file, which can be found at the root of the source code
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# distribution tree, or in https://www.hdfgroup.org/licenses.
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# If you do not have access to either file, you may request a copy from
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# help@hdfgroup.org.
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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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#
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# For now, do not promote any warnings to errors.
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#
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WARNINGS_AS_ERRORS_DFLT=no
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#
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# This filter rewrites -Werror= as -W, in that way demoting warnings
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# promoted to errors back to warnings, if WARNINGS_AS_ERRORS is no.
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#
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demote_errors()
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{
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if [ ${WARNINGS_AS_ERRORS:-${WARNINGS_AS_ERRORS_DFLT}} = no ]; then
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sed 's,-Werror=,-W,g'
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else
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cat
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fi
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}
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#
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# Prepend `$srcdir/config/gnu-warnings/` to the filename suffix(es) given as
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# subroutine argument(s), remove comments starting with # and ending
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# at EOL, replace spans of whitespace (including newlines) with spaces,
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# and re-emit the file(s) thus filtered on the standard output stream.
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#
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load_gnu_arguments()
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{
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set -- $(for arg; do
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sed 's,#.*$,,' $srcdir/config/gnu-warnings/${arg} | demote_errors
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done)
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IFS=' ' echo "$*"
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}
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# Get the compiler version in a way that works for gcc
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# unless a compiler version is already known
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#
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# cc_vendor: The compiler name: gcc
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# cc_version: Version number: 2.91.60, 2.7.2.1
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#
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if test "X-" = "X-$cc_flags_set"; then
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# PathScale compiler spits out gcc version string too. Need to
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# filter it out.
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# icc beginning with version 12 includes a "gcc version compatiblilty"
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# string, causing the gcc H5_CFLAGS to be erroneously added. The line
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# "grep -v 'icc version'" causes the discarding of any output
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# containing 'icc version'. The cc_version for icc is correctly determined
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# and flags added in the intel-flags script.
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cc_version="`$CC $CFLAGS $H5_CFLAGS -v 2>&1 | grep -v 'PathScale' |\
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grep -v '^icc.*version' |\
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grep 'gcc version' | 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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# Get the compiler 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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fi
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if test "X-gcc" = "X-$cc_vendor"; then
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###############################
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# Architecture-specific flags #
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###############################
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arch=
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case "$host_os-$host_cpu" in
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# FreeBSD sets the information from "uname -m" to the general machine
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# architecture, not the specific CPU for the machine, so even our
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# Pentium II Xeon server is set to "i386". Once we know we are on a FreeBSD
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# machine, use the "sysctl" command to get the CPU hardware model.
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freebsd*-i386)
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host_cpu_model=`sysctl -n hw.model`
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case "$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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# architecture-specific optimizations cause problems
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# for some users who build binaries to be used on
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# multiple architectures.
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# 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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# architecture-specific optimizations cause problems
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# for some users who build binaries to be used on
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# multiple architectures.
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# arch="-march=i686"
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;;
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esac
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case "$host_os-$host_cpu" in
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# Cygwin needs the "-std=c99" flag removed.
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cygwin-*)
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;;
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# On Solaris, gcc needs the gnu99 standard to pick up certain POSIX
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# things. Do NOT use this as the gcc norm as this encourages the use
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# of non-standard gcc extensions.
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*solaris*)
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H5_CFLAGS="$H5_CFLAGS -std=gnu99"
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;;
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# Everybody else gets c99 as the standard.
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*)
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H5_CFLAGS="$H5_CFLAGS -std=c99"
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;;
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esac
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H5_CFLAGS="$H5_CFLAGS $arch"
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##############
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# Production #
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##############
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# NDEBUG is handled explicitly by the configure script
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if test $cc_vers_major -le 4; then
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PROD_CFLAGS=
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else
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PROD_CFLAGS="-fstdarg-opt"
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fi
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#########
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# Debug #
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#########
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# NDEBUG is handled explicitly by the configure script
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# -g is handled by the symbols flags
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if test $cc_vers_major -le 4; then
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DEBUG_CFLAGS=
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else
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DEBUG_CFLAGS="-ftrapv -fno-common"
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fi
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########################
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# Enhanced Diagnostics #
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########################
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if test $cc_vers_major -ge 10; then
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NO_DIAGS_CFLAGS="-fdiagnostics-urls=never -fno-diagnostics-color"
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fi
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DIAGS_CFLAGS=
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###########
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# Symbols #
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###########
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NO_SYMBOLS_CFLAGS="-s"
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SYMBOLS_CFLAGS="-g -fno-omit-frame-pointer"
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#############
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# Profiling #
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#############
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PROFILE_CFLAGS="-pg"
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################
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# Optimization #
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################
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if test $cc_vers_major -le 4; then
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HIGH_OPT_CFLAGS="-O3"
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DEBUG_OPT_CFLAGS=
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else
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HIGH_OPT_CFLAGS="-O3"
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DEBUG_OPT_CFLAGS="-Og"
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fi
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NO_OPT_CFLAGS="-O0"
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############
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# Warnings #
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############
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###########
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# General #
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###########
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# Add various general warning flags in gnu-warnings for gcc versions 4.8 and later.
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if test $cc_vers_major -eq 4 -a $cc_vers_minor -ge 8 -o $cc_vers_major -gt 4; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments general)"
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H5_ECFLAGS="$H5_ECFLAGS $(load_gnu_arguments error-general)"
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######################
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# Developer warnings #
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######################
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NO_DEVELOPER_WARNING_CFLAGS=$(load_gnu_arguments no-developer-general)
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DEVELOPER_WARNING_CFLAGS=$(load_gnu_arguments developer-general)
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fi
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#######################
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# gcc 4 special cases #
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#######################
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# GCC 4.8 through the end of GCC 4 series
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if test $cc_vers_major -eq 4 -a $cc_vers_minor -ge 8; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 4.8-4.last)"
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fi
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#############################
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# Version-specific warnings #
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#############################
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# gcc >= 4.8
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if test $cc_vers_major -ge 5 -o $cc_vers_major -eq 4 -a $cc_vers_minor -ge 8; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 4.8)"
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DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments developer-4.8)"
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NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments no-developer-4.8)"
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fi
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# gcc >= 4.9
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if test $cc_vers_major -ge 5 -o $cc_vers_major -eq 4 -a $cc_vers_minor -ge 9; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 4.9)"
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fi
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# gcc >= 5
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if test $cc_vers_major -ge 5; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 5)"
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H5_ECFLAGS="$H5_ECFLAGS $(load_gnu_arguments error-5)"
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fi
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# gcc >= 6
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if test $cc_vers_major -ge 6; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 6)"
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fi
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# gcc >= 7
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if test $cc_vers_major -ge 7; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 7)"
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DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments developer-7)"
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fi
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# gcc 8
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if test $cc_vers_major -ge 8; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 8)"
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H5_ECFLAGS="$H5_ECFLAGS $(load_gnu_arguments error-8)"
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DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments developer-8)"
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NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments no-developer-8)"
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fi
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# gcc 9
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if test $cc_vers_major -ge 9; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 9)"
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fi
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# gcc >= 9.3
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if test $cc_vers_major -ge 10 -o $cc_vers_major -eq 9 -a $cc_vers_minor -ge 3; then
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H5_CFLAGS="$H5_CFLAGS $(load_gnu_arguments 9.3)"
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fi
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# gcc >= 10
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if test $cc_vers_major -ge 10; then
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DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS $(load_gnu_arguments developer-10)"
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fi
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#################
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# Flags are set #
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#################
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cc_flags_set=yes
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fi
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# Clear cc info if no flags set
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if test "X$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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