# -*- shell-script -*- # # Copyright by The HDF Group. # Copyright by the Board of Trustees of the University of Illinois. # All rights reserved. # # This file is part of HDF5. The full HDF5 copyright notice, including # terms governing use, modification, and redistribution, is contained in # the COPYING file, which can be found at the root of the source code # distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. # If you do not have access to either file, you may request a copy from # help@hdfgroup.org. # 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 # unless a compiler version is already known # # cc_vendor: The compiler name: gcc # cc_version: Version number: 2.91.60, 2.7.2.1 # if test X = "X$cc_flags_set"; then # PathScale compiler spits out gcc version string too. Need to # filter it out. # icc beginning with version 12 includes a "gcc version compatiblilty" # string, causing the gcc H5_CFLAGS to be erroneously added. The line # "grep -v 'icc version'" causes the discarding of any output # containing 'icc version'. The cc_version for icc is correctly determined # and flags added in the intel-flags script. cc_version="`$CC $CFLAGS $H5_CFLAGS -v 2>&1 | grep -v 'PathScale' |\ grep -v 'icc version' |\ 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 + $cc_vers_patch` fi # Common GCC flags for various situations case "$cc_vendor-$cc_version" in gcc*) # Architecture-specific flags arch= case "$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*) # architecture-specific optimizations cause problems # for some users who build binaries to be used on # multiple architectures. # arch="-march=i686" ;; esac ;; *-i686) # architecture-specific optimizations cause problems # for some users who build binaries to be used on # multiple architectures. # arch="-march=i686" ;; esac case "$host_os-$host_cpu" in # cygwin needs the "-std=c99" flag removed, so make # a specific case for Cygwin without the flag and a default # case to add the flag everywhere else cygwin-*) ;; *) H5_CFLAGS="$H5_CFLAGS -std=c99" ;; esac # Host-specific flags case "`hostname`" in sleipnir.ncsa.uiuc.edu) arch="$arch -pipe" ;; esac # General flags # # Note that some of the flags listed here really should be developer # flags (listed in a separate variable, below) but we put them here # because they are not raised by the current code and we'd like to # know if they do start showing up. # # NOTE: Don't add -Wpadded here since we can't/won't fix the (many) # warnings that are emitted. If you need it, add it from the # environment variable at configure time. H5_CFLAGS="$H5_CFLAGS $arch -pedantic -Wall -Wextra -Wbad-function-cast -Wc++-compat -Wcast-align" H5_CFLAGS="$H5_CFLAGS -Wcast-qual -Wconversion -Wdeclaration-after-statement -Wdisabled-optimization -Wfloat-equal" H5_CFLAGS="$H5_CFLAGS -Wformat=2 -Winit-self -Winvalid-pch -Wmissing-declarations -Wmissing-include-dirs" H5_CFLAGS="$H5_CFLAGS -Wmissing-prototypes -Wnested-externs -Wold-style-definition -Wpacked -Wpointer-arith" H5_CFLAGS="$H5_CFLAGS -Wredundant-decls -Wshadow -Wstrict-prototypes -Wswitch-default -Wswitch-enum" H5_CFLAGS="$H5_CFLAGS -Wundef -Wunused-macros -Wunsafe-loop-optimizations -Wwrite-strings" # Production # NDEBUG is handled explicitly by the configure script case "$cc_vendor-$cc_version" in gcc-4.*) PROD_CFLAGS= ;; gcc-[56789].*) PROD_CFLAGS="-fstdarg-opt" ;; *) # gcc automatically inlines based on the optimization level # this is just a failsafe PROD_CFLAGS="-finline-functions" ;; esac # Debug # NDEBUG is handled explicitly by the configure script # -g is handled by the symbols flags case "$cc_vendor-$cc_version" in gcc-[56789].*) DEBUG_CFLAGS="-ftrapv -fno-common" ;; *) DEBUG_CFLAGS= ;; esac # Developer warnings (suggestions from gcc, not code problems) DEVELOPER_WARNING_CFLAGS="-Winline -Waggregate-return -Wmissing-format-attribute -Wmissing-noreturn" NO_DEVELOPER_WARNING_CFLAGS="-Wno-inline -Wno-aggregate-return -Wno-missing-format-attribute -Wno-missing-noreturn" # Symbols NO_SYMBOLS_CFLAGS="-s" SYMBOLS_CFLAGS="-g -fno-omit-frame-pointer" # Profile PROFILE_CFLAGS="-pg" # Optimization case "$cc_vendor-$cc_version" in gcc-4.*) HIGH_OPT_CFLAGS="-O3" DEBUG_OPT_CFLAGS= ;; gcc-[56789].*) HIGH_OPT_CFLAGS="-O3" DEBUG_OPT_CFLAGS="-Og" ;; *) HIGH_OPT_CFLAGS="-O" DEBUG_OPT_CFLAGS= ;; esac NO_OPT_CFLAGS="-O0" # 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 # When the gcc 7.x release is out, we should check for additional flags to # include and break it out into it's own section, like the other versions # below. -QAK gcc-[6789].*) # Append warning flags that only gcc 4.2+ knows about # (none, or incorporated in -Wall / -Wextra now) # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" # Append warning flags that only gcc 4.5+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants" # Append warning flags that only gcc 4.6+ knows about H5_CFLAGS="$H5_CFLAGS -Wdouble-promotion -Wtrampolines" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=const" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=const" # Append warning flags that only gcc 4.7+ knows about H5_CFLAGS="$H5_CFLAGS -Wstack-usage=8192 -Wvector-operation-performance" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=pure -Wsuggest-attribute=noreturn" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=pure -Wno-suggest-attribute=noreturn" # Append warning flags that only gcc 4.8+ knows about DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=format" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=format" # Append warning flags that only gcc 4.9+ knows about H5_CFLAGS="$H5_CFLAGS -Wdate-time" # Append warning flags that only gcc 5.x+ knows about H5_CFLAGS="$H5_CFLAGS -Warray-bounds=2 -Wc99-c11-compat" # Append warning flags that only gcc 6.x+ knows about H5_CFLAGS="$H5_CFLAGS -Wnull-dereference -Wunused-const-variable -Wduplicated-cond -Whsa" ;; gcc-5*) # Append warning flags that only gcc 4.2+ knows about # (none, or incorporated in -Wall / -Wextra now) # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" # Append warning flags that only gcc 4.5+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants" # Append warning flags that only gcc 4.6+ knows about H5_CFLAGS="$H5_CFLAGS -Wdouble-promotion -Wtrampolines" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=const" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=const" # Append warning flags that only gcc 4.7+ knows about H5_CFLAGS="$H5_CFLAGS -Wstack-usage=8192 -Wvector-operation-performance" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=pure -Wsuggest-attribute=noreturn" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=pure -Wno-suggest-attribute=noreturn" # Append warning flags that only gcc 4.8+ knows about DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=format" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=format" # Append warning flags that only gcc 4.9+ knows about H5_CFLAGS="$H5_CFLAGS -Wdate-time" # Append warning flags that only gcc 5.x+ knows about H5_CFLAGS="$H5_CFLAGS -Warray-bounds=2 -Wc99-c11-compat" ;; gcc-4.9*) # Append warning flags that only gcc 4.2+ knows about # (none, or incorporated in -Wall / -Wextra now) # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" # Append warning flags that only gcc 4.5+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants" # Append warning flags that only gcc 4.6+ knows about H5_CFLAGS="$H5_CFLAGS -Wdouble-promotion -Wtrampolines" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=const" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=const" # Append warning flags that only gcc 4.7+ knows about H5_CFLAGS="$H5_CFLAGS -Wstack-usage=8192 -Wvector-operation-performance" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=pure -Wsuggest-attribute=noreturn" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=pure -Wno-suggest-attribute=noreturn" # Append warning flags that only gcc 4.8+ knows about DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=format" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=format" # Append warning flags that only gcc 4.9+ knows about H5_CFLAGS="$H5_CFLAGS -Wdate-time" ;; gcc-4.8*) # Append warning flags that only gcc 4.2+ knows about # (none, or incorporated in -Wall / -Wextra now) # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" # Append warning flags that only gcc 4.5+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow=5 -Wjump-misses-init" # Append warning flags that only gcc 4.6+ knows about H5_CFLAGS="$H5_CFLAGS -Wdouble-promotion -Wtrampolines" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=const" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=const" # Append warning flags that only gcc 4.7+ knows about H5_CFLAGS="$H5_CFLAGS -Wstack-usage=8192 -Wvector-operation-performance" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=pure -Wsuggest-attribute=noreturn" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=pure -Wno-suggest-attribute=noreturn" # Append warning flags that only gcc 4.8+ knows about DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=format" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=format" ;; gcc-4.7*) # Append warning flags that only gcc 4.2+ knows about # (none, or incorporated in -Wall / -Wextra now) # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" # Append warning flags that only gcc 4.5+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants" # Append warning flags that only gcc 4.6+ knows about H5_CFLAGS="$H5_CFLAGS -Wdouble-promotion -Wtrampolines" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=const" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=const" # Append warning flags that only gcc 4.7+ knows about H5_CFLAGS="$H5_CFLAGS -Wstack-usage=8192 -Wvector-operation-performance" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=pure -Wsuggest-attribute=noreturn" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=pure -Wno-suggest-attribute=noreturn" ;; gcc-4.6*) # Disable warnings about using 'long long' type H5_CFLAGS="$H5_CFLAGS -Wno-long-long" # Append warning flags that only gcc 4.2+ knows about # (none, or incorporated in -Wall / -Wextra now) # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" # Append warning flags that only gcc 4.5+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-aliasing -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants" # Append warning flags that only gcc 4.6+ knows about H5_CFLAGS="$H5_CFLAGS -Wdouble-promotion -Wtrampolines" DEVELOPER_WARNING_CFLAGS="$DEVELOPER_WARNING_CFLAGS -Wsuggest-attribute=const" NO_DEVELOPER_WARNING_CFLAGS="$NO_DEVELOPER_WARNING_CFLAGS -Wno-suggest-attribute=const" ;; gcc-4.5*) # Disable warnings about using 'long long' type H5_CFLAGS="$H5_CFLAGS -Wno-long-long" # Append warning flags that only gcc 4.2+ knows about # (none, or incorporated in -Wall / -Wextra now) # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" # Append warning flags that only gcc 4.5+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-aliasing -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants" ;; gcc-4.4*) # Disable warnings about using 'long long' type H5_CFLAGS="$H5_CFLAGS -Wno-long-long" # Append warning flags that only gcc 4.2+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow" # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla" # Append warning flags that only gcc 4.4+ knows about H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat" ;; gcc-4.3*) # Disable warnings about using 'long long' type H5_CFLAGS="$H5_CFLAGS -Wno-long-long" # Append warning flags that only gcc 4.1+ knows about # -Wvolatile-register-var was later incorporated into -Wall and # needs to be specified explicitly for gcc 4.1-4.3. H5_CFLAGS="$H5_CFLAGS -Wvolatile-register-var" # Append warning flags that only gcc 4.2+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow" # Append warning flags that only gcc 4.3+ knows about # # Technically, variable-length arrays are part of the C99 standard, but # we should approach them a bit cautiously... -QAK H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wvla" ;; gcc-4.2*) # Disable warnings about using 'long long' type H5_CFLAGS="$H5_CFLAGS -Wno-long-long" # Append warning flags that only gcc 4.1+ knows about # -Wvolatile-register-var was later incorporated into -Wall and # needs to be specified explicitly for gcc 4.1-4.3. H5_CFLAGS="$H5_CFLAGS -Wvolatile-register-var" # Append warning flags that only gcc 4.2+ knows about H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow" ;; gcc-4.1*) # Disable warnings about using 'long long' type H5_CFLAGS="$H5_CFLAGS -Wno-long-long" # Append warning flags that only gcc 4.1+ knows about # -Wvolatile-register-var was later incorporated into -Wall and # needs to be specified explicitly for gcc 4.1-4.3. H5_CFLAGS="$H5_CFLAGS -Wvolatile-register-var" ;; esac # Clear cc info if no flags set if test "X$cc_flags_set" = "X"; then cc_vendor= cc_version= fi