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|
# FPTOOLS_SET_C_LD_FLAGS
# ----------------------------------
# Set the C, LD and CPP flags for a given platform.
# $1 is the platform
# $2 is the name of the CC flags variable
# $3 is the name of the linker flags variable when linking with gcc
# $4 is the name of the linker flags variable when linking with ld
# $5 is the name of the CPP flags variable
AC_DEFUN([FPTOOLS_SET_C_LD_FLAGS],
[
AC_REQUIRE([FP_PROG_LD_IS_GNU])
AC_MSG_CHECKING([Setting up $2, $3, $4 and $5])
case $$1 in
i386-*)
# Workaround for #7799
$2="$$2 -U__i686"
;;
esac
case $$1 in
i386-unknown-mingw32)
$2="$$2 -march=i686"
;;
i386-portbld-freebsd*)
$2="$$2 -march=i686"
;;
x86_64-unknown-solaris2)
# Solaris is a multi-lib platform, providing both 32- and 64-bit
# user-land. It appears to default to 32-bit builds but we of course want to
# compile for 64-bits on x86-64.
#
# On OpenSolaris uses gnu ld whereas SmartOS appears to use the Solaris
# implementation, which rather uses the -64 flag.
$2="$$2 -m64"
$3="$$3 -m64"
$5="$$5 -m64"
if test "$fp_cv_gnu_ld" = "yes"; then
$4="$$4 -m64"
else
$4="$$4 -64"
fi
;;
alpha-*)
# For now, to suppress the gcc warning "call-clobbered
# register used for global register variable", we simply
# disable all warnings altogether using the -w flag. Oh well.
$2="$$2 -w -mieee -D_REENTRANT"
$3="$$3 -w -mieee -D_REENTRANT"
$5="$$5 -w -mieee -D_REENTRANT"
;;
hppa*)
# ___HPUX_SOURCE, not _HPUX_SOURCE, is #defined if -ansi!
# (very nice, but too bad the HP /usr/include files don't agree.)
$2="$$2 -D_HPUX_SOURCE"
$3="$$3 -D_HPUX_SOURCE"
$5="$$5 -D_HPUX_SOURCE"
;;
arm*freebsd*)
# On arm/freebsd, tell gcc to generate Arm
# instructions (ie not Thumb).
$2="$$2 -marm"
$3="$$3 -Wl,-z,noexecstack"
$4="$$4 -z noexecstack"
;;
arm*linux*)
# On arm/linux and arm/android, tell gcc to generate Arm
# instructions (ie not Thumb).
$2="$$2 -marm"
$3="$$3 -Wl,-z,noexecstack"
$4="$$4 -z noexecstack"
;;
aarch64*freebsd*)
$3="$$3 -Wl,-z,noexecstack"
$4="$$4 -z noexecstack"
;;
aarch64*linux*)
$3="$$3 -Wl,-z,noexecstack"
$4="$$4 -z noexecstack"
;;
aarch64*netbsd*)
$3="$$3 -Wl,-z,noexecstack"
$4="$$4 -z noexecstack"
;;
powerpc-ibm-aix*)
# We need `-D_THREAD_SAFE` to unlock the thread-local `errno`.
$2="$$2 -D_THREAD_SAFE"
$3="$$3 -D_THREAD_SAFE -Wl,-bnotextro"
$4="$$4 -bnotextro"
$5="$$5 -D_THREAD_SAFE"
;;
x86_64-*-openbsd*)
# We need -z wxneeded at least to link ghc-stage2 to workaround
# W^X issue in GHCi on OpenBSD current (as of Aug 2016)
$3="$$3 -Wl,-z,wxneeded"
$4="$$4 -z wxneeded"
;;
esac
AC_MSG_RESULT([done])
])
|
