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[svn-r22222] Description:

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Update GCC compiler flags for new 4.7.0 release.

Tested on:
    Mac OSX/64 10.7.3 (amazon) w/gcc 4.7.0
This commit is contained in:
Quincey Koziol 2012-04-01 15:42:21 -05:00
parent cb28551c3e
commit 6783ce354c
1 changed files with 75 additions and 1 deletions
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76
config/gnu-flags
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@ -186,10 +186,84 @@ esac
# the information from the previous version and adding modifications to that.
case "$cc_vendor-$cc_version" in
# Closer to the gcc 4.8 release, we should check for additional flags to
# include and break it out into it's own section, like the other versions
# below. -QAK
gcc-4.[78]*)
# Replace -ansi flag with -std=c99 flag
H5_CFLAGS="`echo $H5_CFLAGS | sed -e 's/-ansi/-std=c99/g'`"
# Append warning flags
# Don't use the '-Wtraditional' flag, we're way past having K&R C code
# H5_CFLAGS="$H5_CFLAGS -Wtraditional"
# Don't use the '-Wtraditional-conversion' flag, there's too many warnings
# from GCC's assert macro
# H5_CFLAGS="$H5_CFLAGS -Wtraditional-conversion"
# Append warning flags from gcc-3* case
# (don't use -Wpadded flag for normal builds, many of the warnings its
# issuing can't be fixed and they are making it hard to detect other,
# more important warnings)
#H5_CFLAGS="$H5_CFLAGS -Wfloat-equal -Wmissing-format-attribute -Wpadded"
H5_CFLAGS="$H5_CFLAGS -Wfloat-equal -Wmissing-format-attribute"
# Append warning flags from gcc-3.2* case
H5_CFLAGS="$H5_CFLAGS -Wmissing-noreturn -Wpacked -Wdisabled-optimization"
# Enable more format checking flags, beyond the basic -Wformat included
# in -Wall
H5_CFLAGS="$H5_CFLAGS -Wformat=2"
# The "unreachable code" warning appears to be reliable now...
# (this warning was removed in gcc 4.5+)
#H5_CFLAGS="$H5_CFLAGS -Wunreachable-code"
# Append warning flags from gcc-3.3* case
H5_CFLAGS="$H5_CFLAGS -Wendif-labels"
# Append warning flags from gcc-3.4* case
H5_CFLAGS="$H5_CFLAGS -Wdeclaration-after-statement -Wold-style-definition -Winvalid-pch"
# Replace old -W flag with new -Wextra flag
H5_CFLAGS="`echo $H5_CFLAGS | sed -e 's/-W\ /-Wextra\ /g'`"
# Append more extra warning flags that only gcc4.0+ know about
H5_CFLAGS="$H5_CFLAGS -Wvariadic-macros -Winit-self -Wmissing-include-dirs -Wswitch-default -Wswitch-enum -Wunused-macros"
# Append more extra warning flags that only gcc 4.1+ know about
H5_CFLAGS="$H5_CFLAGS -Wunsafe-loop-optimizations -Wc++-compat"
# Append more extra warning flags that only gcc 4.2+ know about
H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow"
# Append more extra warning flags that only gcc 4.3+ know about
#
# Technically, variable-length arrays are part of the C99 standard, but
# we should approach them a bit cautiously... -QAK
H5_CFLAGS="$H5_CFLAGS -Wlogical-op -Wlarger-than=2048 -Wvla"
# Append more extra warning flags that only gcc 4.4+ know about
H5_CFLAGS="$H5_CFLAGS -Wsync-nand -Wframe-larger-than=16384 -Wpacked-bitfield-compat"
# Append more extra warning flags that only gcc 4.5+ know about
H5_CFLAGS="$H5_CFLAGS -Wstrict-overflow=5 -Wjump-misses-init -Wunsuffixed-float-constants"
# Append more extra warning flags that only gcc 4.6+ know about
H5_CFLAGS="$H5_CFLAGS -Wdouble-promotion -Wsuggest-attribute=const -Wtrampolines"
# Append more extra warning flags that only gcc 4.7+ know about
H5_CFLAGS="$H5_CFLAGS -Wstack-usage=8192 -Wvector-operation-performance"
# Try out the new "stack protector" feature in gcc 4.1
# (Strictly speaking this isn't really a "warning" flag, so it's added to
# the debugging flags)
#DEBUG_CFLAGS="$DEBUG_CFLAGS -Wstack-protector -fstack-protector-all"
;;
# Closer to the gcc 4.7 release, we should check for additional flags to
# include and break it out into it's own section, like the other versions
# below. -QAK
gcc-4.[67]*)
gcc-4.6*)
# Replace -ansi flag with -std=c99 flag
H5_CFLAGS="`echo $H5_CFLAGS | sed -e 's/-ansi/-std=c99/g'`"