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8199405: Bump lowest supported gcc to 4.8

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Reviewed-by: erikj
This commit is contained in:
Magnus Ihse Bursie 2018-03-09 19:12:07 +01:00
parent 6ec6080397
commit b86d96a381
2 changed files with 7 additions and 45 deletions
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50
make/autoconf/flags-cflags.m4
View File

@ -121,15 +121,6 @@ AC_DEFUN([FLAGS_SETUP_DEBUG_SYMBOLS],
fi
AC_SUBST(CFLAGS_DEBUG_SYMBOLS)
# FIXME: This was never used in the old build. What to do with it?
if test "x$TOOLCHAIN_TYPE" = xgcc; then
# "-Og" suppported for GCC 4.8 and later
CFLAG_OPTIMIZE_DEBUG_FLAG="-Og"
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$CFLAG_OPTIMIZE_DEBUG_FLAG],
IF_TRUE: [HAS_CFLAG_OPTIMIZE_DEBUG=true],
IF_FALSE: [HAS_CFLAG_OPTIMIZE_DEBUG=false])
fi
])
AC_DEFUN([FLAGS_SETUP_WARNINGS],
@ -163,16 +154,7 @@ AC_DEFUN([FLAGS_SETUP_WARNINGS],
CFLAGS_WARNINGS_ARE_ERRORS="-errtags -errwarn=%all"
;;
gcc)
# Prior to gcc 4.4, a -Wno-X where X is unknown for that version of gcc will cause an error
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [-Wno-this-is-a-warning-that-do-not-exist],
IF_TRUE: [GCC_CAN_DISABLE_WARNINGS=true],
IF_FALSE: [GCC_CAN_DISABLE_WARNINGS=false]
)
if test "x$GCC_CAN_DISABLE_WARNINGS" = "xtrue"; then
DISABLE_WARNING_PREFIX="-Wno-"
else
DISABLE_WARNING_PREFIX=
fi
DISABLE_WARNING_PREFIX="-Wno-"
CFLAGS_WARNINGS_ARE_ERRORS="-Werror"
# Repeate the check for the BUILD_CC and BUILD_CXX. Need to also reset
# CFLAGS since any target specific flags will likely not work with the
@ -183,15 +165,7 @@ AC_DEFUN([FLAGS_SETUP_WARNINGS],
CXX="$BUILD_CXX"
CFLAGS_OLD="$CFLAGS"
CFLAGS=""
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [-Wno-this-is-a-warning-that-do-not-exist],
IF_TRUE: [BUILD_CC_CAN_DISABLE_WARNINGS=true],
IF_FALSE: [BUILD_CC_CAN_DISABLE_WARNINGS=false]
)
if test "x$BUILD_CC_CAN_DISABLE_WARNINGS" = "xtrue"; then
BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-"
else
BUILD_CC_DISABLE_WARNING_PREFIX=
fi
BUILD_CC_DISABLE_WARNING_PREFIX="-Wno-"
CC="$CC_OLD"
CXX="$CXX_OLD"
CFLAGS="$CFLAGS_OLD"
@ -227,17 +201,10 @@ AC_DEFUN([FLAGS_SETUP_QUALITY_CHECKS],
# This is most likely not really correct.
# Add runtime stack smashing and undefined behavior checks.
# Not all versions of gcc support -fstack-protector
STACK_PROTECTOR_CFLAG="-fstack-protector-all"
FLAGS_COMPILER_CHECK_ARGUMENTS(ARGUMENT: [$STACK_PROTECTOR_CFLAG -Werror],
IF_FALSE: [STACK_PROTECTOR_CFLAG=""])
CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
CFLAGS_DEBUG_OPTIONS="$STACK_PROTECTOR_CFLAG --param ssp-buffer-size=1"
CXXFLAGS_DEBUG_OPTIONS="$STACK_PROTECTOR_CFLAG --param ssp-buffer-size=1"
if test "x$STACK_PROTECTOR_CFLAG" != x; then
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS $STACK_PROTECTOR_CFLAG --param ssp-buffer-size=1"
fi
JVM_CFLAGS_SYMBOLS="$JVM_CFLAGS_SYMBOLS -fstack-protector-all --param ssp-buffer-size=1"
;;
esac
fi
@ -789,12 +756,7 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_CPU_DEP],
TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: 6, PREFIX: $2, IF_AT_LEAST: FLAGS_SETUP_GCC6_COMPILER_FLAGS($1))
$1_TOOLCHAIN_CFLAGS="${$1_GCC6_CFLAGS}"
TOOLCHAIN_CHECK_COMPILER_VERSION(VERSION: [4.8], PREFIX: $2,
IF_AT_LEAST: [
# These flags either do not work or give spurious warnings prior to gcc 4.8.
$1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized"
]
)
$1_WARNING_CFLAGS_JVM="-Wno-format-zero-length -Wtype-limits -Wuninitialized"
fi
# EXPORT to API

2
make/autoconf/toolchain.m4
View File

@ -52,7 +52,7 @@ TOOLCHAIN_DESCRIPTION_xlc="IBM XL C/C++"
# Minimum supported versions, empty means unspecified
TOOLCHAIN_MINIMUM_VERSION_clang="3.2"
TOOLCHAIN_MINIMUM_VERSION_gcc="4.7"
TOOLCHAIN_MINIMUM_VERSION_gcc="4.8"
TOOLCHAIN_MINIMUM_VERSION_microsoft="16.00.30319.01" # VS2010
TOOLCHAIN_MINIMUM_VERSION_solstudio="5.13"
TOOLCHAIN_MINIMUM_VERSION_xlc=""