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aclocal.m4
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aclocal.m4
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# Extra autoconf macros for the Glasgow fptools
#
# To be a good autoconf citizen, names of local macros have prefixed with FP_ to
# ensure we don't clash with any pre-supplied autoconf ones.
AC_DEFUN([GHC_SELECT_FILE_EXTENSIONS],
[
$2=''
$3='.so'
case $1 in
*-unknown-cygwin32)
AC_MSG_WARN([GHC does not support the Cygwin target at the moment])
AC_MSG_WARN([I'm assuming you wanted to build for i386-unknown-mingw32])
exit 1
;;
# examples: i386-unknown-mingw32, i686-w64-mingw32, x86_64-w64-mingw32
*-mingw32)
windows=YES
$2='.exe'
$3='.dll'
;;
# apple platform uses .dylib (macOS, iOS, ...)
*-apple-*)
$3='.dylib'
;;
esac
])
# FPTOOLS_SET_PLATFORM_VARS
# ----------------------------------
# Set the platform variables
AC_DEFUN([FPTOOLS_SET_PLATFORM_VARS],
[
# If no argument was given for a configuration variable, then discard
# the guessed canonical system and use the configuration of the
# bootstrapping ghc. If an argument was given, map it from gnu format
# to ghc format.
#
# For why we do it this way, see: #3637, #1717, #2951
#
# In bindists, we haven't called AC_CANONICAL_{BUILD,HOST,TARGET}
# so this justs uses $bootstrap_target.
if test "$build_alias" = ""
then
if test "$bootstrap_target" != ""
then
build=$bootstrap_target
echo "Build platform inferred as: $build"
else
echo "Can't work out build platform"
exit 1
fi
BuildArch=`echo "$build" | sed 's/-.*//'`
BuildVendor=`echo "$build" | sed -e 's/.*-\(.*\)-.*/\1/'`
BuildOS=`echo "$build" | sed 's/.*-//'`
else
GHC_CONVERT_CPU([$build_cpu], [BuildArch])
GHC_CONVERT_VENDOR([$build_vendor], [BuildVendor])
GHC_CONVERT_OS([$build_os], [$BuildArch], [BuildOS])
fi
if test "$host_alias" = ""
then
if test "$bootstrap_target" != ""
then
host=$bootstrap_target
echo "Host platform inferred as: $host"
else
echo "Can't work out host platform"
exit 1
fi
HostArch=`echo "$host" | sed 's/-.*//'`
HostVendor=`echo "$host" | sed -e 's/.*-\(.*\)-.*/\1/'`
HostOS=`echo "$host" | sed 's/.*-//'`
else
GHC_CONVERT_CPU([$host_cpu], [HostArch])
GHC_CONVERT_VENDOR([$host_vendor], [HostVendor])
GHC_CONVERT_OS([$host_os], [$HostArch], [HostOS])
fi
if test "$target_alias" = ""
then
if test "$host_alias" != ""
then
GHC_CONVERT_CPU([$host_cpu], [TargetArch])
GHC_CONVERT_VENDOR([$host_vendor], [TargetVendor])
GHC_CONVERT_OS([$host_os], [$TargetArch],[TargetOS])
else
if test "$bootstrap_target" != ""
then
target=$bootstrap_target
echo "Target platform inferred as: $target"
else
echo "Can't work out target platform"
exit 1
fi
TargetArch=`echo "$target" | sed 's/-.*//'`
TargetVendor=`echo "$target" | sed -e 's/.*-\(.*\)-.*/\1/'`
TargetOS=`echo "$target" | sed 's/.*-//'`
fi
else
GHC_CONVERT_CPU([$target_cpu], [TargetArch])
GHC_CONVERT_VENDOR([$target_vendor], [TargetVendor])
GHC_CONVERT_OS([$target_os], [$TargetArch], [TargetOS])
fi
GHC_LLVM_TARGET([$target_cpu],[$target_vendor],[$target_os],[LlvmTarget])
GHC_SELECT_FILE_EXTENSIONS([$host], [exeext_host], [soext_host])
GHC_SELECT_FILE_EXTENSIONS([$target], [exeext_target], [soext_target])
windows=NO
case $host in
*-unknown-mingw32)
windows=YES
;;
esac
BuildPlatform="$BuildArch-$BuildVendor-$BuildOS"
BuildPlatform_CPP=`echo "$BuildPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
BuildArch_CPP=` echo "$BuildArch" | sed -e 's/\./_/g' -e 's/-/_/g'`
BuildVendor_CPP=` echo "$BuildVendor" | sed -e 's/\./_/g' -e 's/-/_/g'`
BuildOS_CPP=` echo "$BuildOS" | sed -e 's/\./_/g' -e 's/-/_/g'`
HostPlatform="$HostArch-$HostVendor-$HostOS"
HostPlatform_CPP=`echo "$HostPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
HostArch_CPP=` echo "$HostArch" | sed -e 's/\./_/g' -e 's/-/_/g'`
HostVendor_CPP=` echo "$HostVendor" | sed -e 's/\./_/g' -e 's/-/_/g'`
HostOS_CPP=` echo "$HostOS" | sed -e 's/\./_/g' -e 's/-/_/g'`
TargetPlatform="$TargetArch-$TargetVendor-$TargetOS"
TargetPlatform_CPP=`echo "$TargetPlatform" | sed -e 's/\./_/g' -e 's/-/_/g'`
TargetArch_CPP=` echo "$TargetArch" | sed -e 's/\./_/g' -e 's/-/_/g'`
TargetVendor_CPP=` echo "$TargetVendor" | sed -e 's/\./_/g' -e 's/-/_/g'`
TargetOS_CPP=` echo "$TargetOS" | sed -e 's/\./_/g' -e 's/-/_/g'`
# we intend to pass trough --targets to llvm as is.
LLVMTarget_CPP=` echo "$LlvmTarget"`
echo "GHC build : $BuildPlatform"
echo "GHC host : $HostPlatform"
echo "GHC target : $TargetPlatform"
echo "LLVM target: $LlvmTarget"
AC_SUBST(BuildPlatform)
AC_SUBST(HostPlatform)
AC_SUBST(TargetPlatform)
AC_SUBST(HostPlatform_CPP)
AC_SUBST(BuildPlatform_CPP)
AC_SUBST(TargetPlatform_CPP)
AC_SUBST(HostArch_CPP)
AC_SUBST(BuildArch_CPP)
AC_SUBST(TargetArch_CPP)
AC_SUBST(HostOS_CPP)
AC_SUBST(BuildOS_CPP)
AC_SUBST(TargetOS_CPP)
AC_SUBST(LLVMTarget_CPP)
AC_SUBST(HostVendor_CPP)
AC_SUBST(BuildVendor_CPP)
AC_SUBST(TargetVendor_CPP)
AC_SUBST(exeext_host)
AC_SUBST(exeext_target)
AC_SUBST(soext_host)
AC_SUBST(soext_target)
])
# FPTOOLS_SET_HASKELL_PLATFORM_VARS
# ----------------------------------
# Set the Haskell platform variables
AC_DEFUN([FPTOOLS_SET_HASKELL_PLATFORM_VARS],
[
checkArch() {
case [$]1 in
i386)
test -z "[$]2" || eval "[$]2=ArchX86"
;;
x86_64|amd64)
test -z "[$]2" || eval "[$]2=ArchX86_64"
;;
powerpc)
test -z "[$]2" || eval "[$]2=ArchPPC"
;;
powerpc64)
test -z "[$]2" || eval "[$]2=\"ArchPPC_64 {ppc_64ABI = ELF_V1}\""
;;
powerpc64le)
test -z "[$]2" || eval "[$]2=\"ArchPPC_64 {ppc_64ABI = ELF_V2}\""
;;
sparc)
test -z "[$]2" || eval "[$]2=ArchSPARC"
;;
sparc64)
test -z "[$]2" || eval "[$]2=ArchSPARC64"
;;
arm)
GET_ARM_ISA()
test -z "[$]2" || eval "[$]2=\"ArchARM {armISA = \$ARM_ISA, armISAExt = \$ARM_ISA_EXT, armABI = \$ARM_ABI}\""
;;
aarch64)
test -z "[$]2" || eval "[$]2=ArchARM64"
;;
alpha)
test -z "[$]2" || eval "[$]2=ArchAlpha"
;;
mips|mipseb)
test -z "[$]2" || eval "[$]2=ArchMipseb"
;;
mipsel)
test -z "[$]2" || eval "[$]2=ArchMipsel"
;;
hppa|hppa1_1|ia64|m68k|nios2|rs6000|s390|s390x|sh4|vax)
test -z "[$]2" || eval "[$]2=ArchUnknown"
;;
*)
echo "Unknown arch [$]1"
exit 1
;;
esac
}
checkVendor() {
case [$]1 in
dec|none|unknown|hp|apple|next|sun|sgi|ibm|montavista|portbld|alpine)
;;
*)
AC_MSG_WARN([Unknown vendor [$]1])
;;
esac
}
checkOS() {
case [$]1 in
linux|linux-android)
test -z "[$]2" || eval "[$]2=OSLinux"
;;
darwin|ios|watchos|tvos)
test -z "[$]2" || eval "[$]2=OSDarwin"
;;
solaris2)
test -z "[$]2" || eval "[$]2=OSSolaris2"
;;
mingw32)
test -z "[$]2" || eval "[$]2=OSMinGW32"
;;
freebsd)
test -z "[$]2" || eval "[$]2=OSFreeBSD"
;;
dragonfly)
test -z "[$]2" || eval "[$]2=OSDragonFly"
;;
kfreebsdgnu)
test -z "[$]2" || eval "[$]2=OSKFreeBSD"
;;
openbsd)
test -z "[$]2" || eval "[$]2=OSOpenBSD"
;;
netbsd)
test -z "[$]2" || eval "[$]2=OSNetBSD"
;;
haiku)
test -z "[$]2" || eval "[$]2=OSHaiku"
;;
nto-qnx)
test -z "[$]2" || eval "[$]2=OSQNXNTO"
;;
dragonfly|hpux|linuxaout|freebsd2|nextstep2|nextstep3|sunos4|ultrix)
test -z "[$]2" || eval "[$]2=OSUnknown"
;;
aix)
test -z "[$]2" || eval "[$]2=OSAIX"
;;
gnu)
test -z "[$]2" || eval "[$]2=OSHurd"
;;
*)
echo "Unknown OS '[$]1'"
exit 1
;;
esac
}
dnl ** check for Apple-style dead-stripping support
dnl (.subsections-via-symbols assembler directive)
AC_MSG_CHECKING(for .subsections_via_symbols)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [__asm__ (".subsections_via_symbols");])],
[AC_MSG_RESULT(yes)
HaskellHaveSubsectionsViaSymbols=True
AC_DEFINE([HAVE_SUBSECTIONS_VIA_SYMBOLS],[1],
[Define to 1 if Apple-style dead-stripping is supported.])
],
[HaskellHaveSubsectionsViaSymbols=False
AC_MSG_RESULT(no)])
dnl ** check for .ident assembler directive
AC_MSG_CHECKING(whether your assembler supports .ident directive)
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([__asm__ (".ident \"GHC x.y.z\"");])],
[AC_MSG_RESULT(yes)
HaskellHaveIdentDirective=True],
[AC_MSG_RESULT(no)
HaskellHaveIdentDirective=False])
dnl *** check for GNU non-executable stack note support (ELF only)
dnl (.section .note.GNU-stack,"",@progbits)
dnl This test doesn't work with "gcc -g" in gcc 4.4 (GHC trac #3889:
dnl Error: can't resolve `.note.GNU-stack' {.note.GNU-stack section} - `.Ltext0' {.text section}
dnl so we empty CFLAGS while running this test
CFLAGS2="$CFLAGS"
CFLAGS=
case $TargetArch in
arm)
dnl See #13937.
progbits="%progbits"
;;
*)
progbits="@progbits"
;;
esac
AC_MSG_CHECKING(for GNU non-executable stack support)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([__asm__ (".section .note.GNU-stack,\"\",$progbits");], [0])],
[AC_MSG_RESULT(yes)
HaskellHaveGnuNonexecStack=True],
[AC_MSG_RESULT(no)
HaskellHaveGnuNonexecStack=False])
CFLAGS="$CFLAGS2"
checkArch "$BuildArch" "HaskellBuildArch"
checkVendor "$BuildVendor"
checkOS "$BuildOS" ""
checkArch "$HostArch" "HaskellHostArch"
checkVendor "$HostVendor"
checkOS "$HostOS" ""
checkArch "$TargetArch" "HaskellTargetArch"
checkVendor "$TargetVendor"
checkOS "$TargetOS" "HaskellTargetOs"
AC_SUBST(HaskellTargetArch)
AC_SUBST(HaskellTargetOs)
AC_SUBST(HaskellHaveSubsectionsViaSymbols)
AC_SUBST(HaskellHaveIdentDirective)
AC_SUBST(HaskellHaveGnuNonexecStack)
])
# GET_ARM_ISA
# ----------------------------------
# Get info about the ISA on the ARM arch
AC_DEFUN([GET_ARM_ISA],
[
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM(
[],
[#if defined(__ARM_ARCH_2__) || \
defined(__ARM_ARCH_3__) || \
defined(__ARM_ARCH_3M__) || \
defined(__ARM_ARCH_4__) || \
defined(__ARM_ARCH_4T__) || \
defined(__ARM_ARCH_5__) || \
defined(__ARM_ARCH_5T__) || \
defined(__ARM_ARCH_5E__) || \
defined(__ARM_ARCH_5TE__)
return 0;
#else
not pre arm v6
#endif]
)],
[AC_DEFINE(arm_HOST_ARCH_PRE_ARMv6, 1, [ARM pre v6])
AC_DEFINE(arm_HOST_ARCH_PRE_ARMv7, 1, [ARM pre v7])
changequote(, )dnl
ARM_ISA=ARMv5
ARM_ISA_EXT="[]"
changequote([, ])dnl
],
[
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM(
[],
[#if defined(__ARM_ARCH_6__) || \
defined(__ARM_ARCH_6J__) || \
defined(__ARM_ARCH_6T2__) || \
defined(__ARM_ARCH_6Z__) || \
defined(__ARM_ARCH_6ZK__) || \
defined(__ARM_ARCH_6K__) || \
defined(__ARM_ARCH_6KZ__) || \
defined(__ARM_ARCH_6M__)
return 0;
#else
not pre arm v7
#endif]
)],
[AC_DEFINE(arm_HOST_ARCH_PRE_ARMv7, 1, [ARM pre v7])
ARM_ISA=ARMv6
AC_COMPILE_IFELSE([
AC_LANG_PROGRAM(
[],
[#if defined(__VFP_FP__)
return 0;
#else
no vfp
#endif]
)],
[changequote(, )dnl
ARM_ISA_EXT="[VFPv2]"
changequote([, ])dnl
],
[changequote(, )dnl
ARM_ISA_EXT="[]"
changequote([, ])dnl
]
)],
[changequote(, )dnl
ARM_ISA=ARMv7
ARM_ISA_EXT="[VFPv3,NEON]"
changequote([, ])dnl
])
])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[],
[#if defined(__SOFTFP__)
return 0;
#else
not softfp
#endif]
)],
[changequote(, )dnl
ARM_ABI="SOFT"
changequote([, ])dnl
],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[],
[#if defined(__ARM_PCS_VFP)
return 0;
#else
no hard float ABI
#endif]
)],
[ARM_ABI="HARD"],
[ARM_ABI="SOFTFP"]
)]
)
AC_SUBST(ARM_ISA)
])
# FP_SETTINGS
# ----------------------------------
# Set the variables used in the settings file
AC_DEFUN([FP_SETTINGS],
[
if test "$windows" = YES -a "$EnableDistroToolchain" = "NO"
then
mingw_bin_prefix=mingw/bin/
SettingsCCompilerCommand="\$tooldir/${mingw_bin_prefix}gcc.exe"
SettingsHaskellCPPCommand="\$tooldir/${mingw_bin_prefix}gcc.exe"
SettingsHaskellCPPFlags="$HaskellCPPArgs"
SettingsLdCommand="\$tooldir/${mingw_bin_prefix}ld.exe"
SettingsArCommand="\$tooldir/${mingw_bin_prefix}ar.exe"
SettingsRanlibCommand="\$tooldir/${mingw_bin_prefix}ranlib.exe"
SettingsPerlCommand='$tooldir/perl/perl.exe'
SettingsDllWrapCommand="\$tooldir/${mingw_bin_prefix}dllwrap.exe"
SettingsWindresCommand="\$tooldir/${mingw_bin_prefix}windres.exe"
SettingsTouchCommand='$topdir/bin/touchy.exe'
elif test "$EnableDistroToolchain" = "YES"
then
SettingsCCompilerCommand="$(basename $CC)"
SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2"
SettingsHaskellCPPCommand="$(basename $HaskellCPPCmd)"
SettingsHaskellCPPFlags="$HaskellCPPArgs"
SettingsLdCommand="$(basename $LdCmd)"
SettingsArCommand="$(basename $ArCmd)"
SettingsPerlCommand="$(basename $PerlCmd)"
SettingsDllWrapCommand="$(basename $DllWrapCmd)"
SettingsWindresCommand="$(basename $WindresCmd)"
SettingsTouchCommand='$topdir/bin/touchy.exe'
else
SettingsCCompilerCommand="$CC"
SettingsHaskellCPPCommand="$HaskellCPPCmd"
SettingsHaskellCPPFlags="$HaskellCPPArgs"
SettingsLdCommand="$LdCmd"
SettingsArCommand="$ArCmd"
SettingsRanlibCommand="$RanlibCmd"
SettingsPerlCommand="$PerlCmd"
if test -z "$DllWrapCmd"
then
SettingsDllWrapCommand="/bin/false"
else
SettingsDllWrapCommand="$DllWrapCmd"
fi
if test -z "$WindresCmd"
then
SettingsWindresCommand="/bin/false"
else
SettingsWindresCommand="$WindresCmd"
fi
SettingsTouchCommand='touch'
fi
if test -z "$LibtoolCmd"
then
SettingsLibtoolCommand="libtool"
else
SettingsLibtoolCommand="$LibtoolCmd"
fi
if test -z "$ClangCmd"
then
SettingsClangCommand="clang"
else
SettingsClangCommand="$ClangCmd"
fi
if test -z "$LlcCmd"
then
SettingsLlcCommand="llc"
else
SettingsLlcCommand="$LlcCmd"
fi
if test -z "$OptCmd"
then
SettingsOptCommand="opt"
else
SettingsOptCommand="$OptCmd"
fi
SettingsCCompilerFlags="$CONF_CC_OPTS_STAGE2"
SettingsCCompilerLinkFlags="$CONF_GCC_LINKER_OPTS_STAGE2"
SettingsCCompilerSupportsNoPie="$CONF_GCC_SUPPORTS_NO_PIE"
SettingsLdFlags="$CONF_LD_LINKER_OPTS_STAGE2"
AC_SUBST(SettingsCCompilerCommand)
AC_SUBST(SettingsHaskellCPPCommand)
AC_SUBST(SettingsHaskellCPPFlags)
AC_SUBST(SettingsCCompilerFlags)
AC_SUBST(SettingsCCompilerLinkFlags)
AC_SUBST(SettingsCCompilerSupportsNoPie)
AC_SUBST(SettingsLdCommand)
AC_SUBST(SettingsLdFlags)
AC_SUBST(SettingsArCommand)
AC_SUBST(SettingsRanlibCommand)
AC_SUBST(SettingsPerlCommand)
AC_SUBST(SettingsDllWrapCommand)
AC_SUBST(SettingsWindresCommand)
AC_SUBST(SettingsLibtoolCommand)
AC_SUBST(SettingsTouchCommand)
AC_SUBST(SettingsClangCommand)
AC_SUBST(SettingsLlcCommand)
AC_SUBST(SettingsOptCommand)
])
# Helper for cloning a shell variable's state
AC_DEFUN([FP_COPY_SHELLVAR],
[if test -n "${$1+set}"; then $2="$$1"; else unset $2; fi ])
# FP_SET_CFLAGS_C99
# ----------------------------------
# figure out which CFLAGS are needed to place the compiler into C99 mode
# $1 is name of CC variable (unmodified)
# $2 is name of CC flags variable (augmented if needed)
# $3 is name of CPP flags variable (augmented if needed)
AC_DEFUN([FP_SET_CFLAGS_C99],
[
dnl save current state of AC_PROG_CC_C99
FP_COPY_SHELLVAR([CC],[fp_save_CC])
FP_COPY_SHELLVAR([CFLAGS],[fp_save_CFLAGS])
FP_COPY_SHELLVAR([CPPFLAGS],[fp_save_CPPFLAGS])
FP_COPY_SHELLVAR([ac_cv_prog_cc_c99],[fp_save_cc_c99])
dnl set local state
CC="$$1"
CFLAGS="$$2"
CPPFLAGS="$$3"
unset ac_cv_prog_cc_c99
dnl perform detection
_AC_PROG_CC_C99
fp_cc_c99="$ac_cv_prog_cc_c99"
case "x$ac_cv_prog_cc_c99" in
x) ;; # noop
xno) AC_MSG_ERROR([C99-compatible compiler needed]) ;;
*) $2="$$2 $ac_cv_prog_cc_c99"
$3="$$3 $ac_cv_prog_cc_c99"
;;
esac
dnl restore saved state
FP_COPY_SHELLVAR([fp_save_CC],[CC])
FP_COPY_SHELLVAR([fp_save_CFLAGS],[CFLAGS])
FP_COPY_SHELLVAR([fp_save_CPPFLAGS],[CPPFLAGS])
FP_COPY_SHELLVAR([fp_save_cc_c99],[ac_cv_prog_cc_c99])
dnl cleanup
unset fp_save_CC
unset fp_save_CFLAGS
unset fp_save_cc_c99
])
# 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_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="$$2 -march=i686"
;;
x86_64-unknown-solaris2)
$2="$$2 -m64"
$3="$$3 -m64"
$4="$$4 -m64"
$5="$$5 -m64"
;;
alpha-*)
# For now, to suppress the gcc warning "call-clobbered
# register used for global register variable", we simply
# disable all warnings altogether using the -w flag. Oh well.
$2="$$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="$$5 -D_HPUX_SOURCE"
;;
arm*linux*)
# On arm/linux and arm/android, tell gcc to generate Arm
# instructions (ie not Thumb).
$2="$$2 -marm"
$3="$$3 -Wl,-z,noexecstack"
$4="$$4 -z noexecstack"
;;
aarch64*linux*)
$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
# If gcc knows about the stack protector, turn it off.
# Otherwise the stack-smash handler gets triggered.
echo 'int main(void) {return 0;}' > conftest.c
if $CC -c conftest.c -fno-stack-protector > /dev/null 2>&1
then
$2="$$2 -fno-stack-protector"
fi
rm -f conftest.c conftest.o
AC_MSG_RESULT([done])
])
# FP_VISIBILITY_HIDDEN
# ----------------------------------
# Is the visibility hidden attribute supported?
AC_DEFUN([FP_VISIBILITY_HIDDEN],
[
AC_MSG_CHECKING([whether __attribute__((visibility("hidden"))) is supported])
echo '__attribute__((visibility("hidden"))) void foo(void) {}' > conftest.c
if $CC -Wall -Werror -c conftest.c > /dev/null 2>&1
then
AC_MSG_RESULT([yes])
AC_DEFINE(HAS_VISIBILITY_HIDDEN, 1, [Has visibility hidden])
else
AC_MSG_RESULT([no])
fi
rm -f conftest.c conftest.o
])
# FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN
# ----------------------------------
# Little endian ARM on Linux with some ABIs has big endian word order
# in doubles. Define FLOAT_WORDS_BIGENDIAN if this is the case.
AC_DEFUN([FPTOOLS_FLOAT_WORD_ORDER_BIGENDIAN],
[AC_CACHE_CHECK([whether float word order is big endian], [fptools_cv_float_word_order_bigendian],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <endian.h>],
[#if defined(__FLOAT_WORD_ORDER) && __FLOAT_WORD_ORDER == BIG_ENDIAN
return 0;
#else
not float word order big endian
#endif]
)],
[fptools_cv_float_word_order_bigendian=yes],
[fptools_cv_float_word_order_bigendian=no])
])
case $fptools_cv_float_word_order_bigendian in
yes)
AC_DEFINE([FLOAT_WORDS_BIGENDIAN], 1,
[Define to 1 if your processor stores words of floats with
the most significant byte first]) ;;
esac
])
# FP_PROG_CONTEXT_DIFF
# --------------------
# Figure out how to do context diffs. Sets the output variable ContextDiffCmd.
#
# Note: NeXTStep thinks diff'ing a file against itself is "trouble".
AC_DEFUN([FP_PROG_CONTEXT_DIFF],
[AC_CACHE_CHECK([for a working context diff], [fp_cv_context_diff],
[echo foo > conftest1
echo foo > conftest2
fp_cv_context_diff=no
for fp_var in '-U 1' '-u1' '-C 1' '-c1'
do
if diff $fp_var conftest1 conftest2 > /dev/null 2>&1; then
fp_cv_context_diff="diff $fp_var"
break
fi
done])
if test x"$fp_cv_context_diff" = xno; then
AC_MSG_ERROR([cannot figure out how to do context diffs])
fi
AC_SUBST(ContextDiffCmd, [$fp_cv_context_diff])
])# FP_PROG_CONTEXT_DIFF
# FP_COMPUTE_INT(EXPRESSION, VARIABLE, INCLUDES, IF-FAILS)
# --------------------------------------------------------
# Assign VARIABLE the value of the compile-time EXPRESSION using INCLUDES for
# compilation. Execute IF-FAILS when unable to determine the value. Works for
# cross-compilation, too.
#
# Implementation note: We are lazy and use an internal autoconf macro, but it
# is supported in autoconf versions 2.50 up to the actual 2.57, so there is
# little risk.
AC_DEFUN([FP_COMPUTE_INT],
[_AC_COMPUTE_INT([$1], [$2], [$3], [$4])[]dnl
])# FP_COMPUTE_INT
# FP_CHECK_ALIGNMENT(TYPE, [IGNORED], [INCLUDES = DEFAULT-INCLUDES])
# ------------------------------------------------------------------
# A variation of AC_CHECK_SIZEOF for computing the alignment restrictions of a
# given type. Defines ALIGNMENT_TYPE.
AC_DEFUN([FP_CHECK_ALIGNMENT],
[AS_LITERAL_IF(m4_translit([[$1]], [*], [p]), [],
[AC_FATAL([$0: requires literal arguments])])[]dnl
AC_CHECK_TYPE([$1], [], [], [$3])[]dnl
m4_pushdef([fp_Cache], [AS_TR_SH([fp_cv_alignment_$1])])[]dnl
AC_CACHE_CHECK([alignment of $1], [fp_Cache],
[if test "$AS_TR_SH([ac_cv_type_$1])" = yes; then
FP_COMPUTE_INT([offsetof(struct { char c; $1 ty; },ty)],
[fp_Cache],
[AC_INCLUDES_DEFAULT([$3])],
[AC_MSG_ERROR([cannot compute alignment ($1)
See `config.log' for more details.], [77])])
else
fp_Cache=0
fi])[]dnl
AC_DEFINE_UNQUOTED(AS_TR_CPP(alignment_$1), $fp_Cache, [The alignment of a `$1'.])[]dnl
m4_popdef([fp_Cache])[]dnl
])# FP_CHECK_ALIGNMENT
# FP_CHECK_SIZEOF_AND_ALIGNMENT(TYPE)
# ------------------------------------------------------------------
# Combines AC_CHECK_SIZEOF and FP_CHECK_ALIGNMENT.
AC_DEFUN([FP_CHECK_SIZEOF_AND_ALIGNMENT],
[AC_CHECK_SIZEOF([$1])
FP_CHECK_ALIGNMENT([$1])
])# FP_CHECK_SIZEOF_AND_ALIGNMENT
# FP_LEADING_UNDERSCORE
# ---------------------
# Test for determining whether symbol names have a leading underscore. We assume
# that they _haven't_ if anything goes wrong. Sets the output variable
# LeadingUnderscore to YES or NO and defines LEADING_UNDERSCORE correspondingly.
#
# Some nlist implementations seem to try to be compatible by ignoring a leading
# underscore sometimes (eg. FreeBSD). We therefore have to work around this by
# checking for *no* leading underscore first. Sigh. --SDM
#
# Similarly on OpenBSD, but this test doesn't help. -- dons
#
AC_DEFUN([FP_LEADING_UNDERSCORE],
[AC_CHECK_LIB([elf], [nlist], [LIBS="-lelf $LIBS"])
AC_CACHE_CHECK([leading underscore in symbol names], [fptools_cv_leading_underscore], [
# Hack!: nlist() under Digital UNIX insist on there being an _,
# but symbol table listings shows none. What is going on here?!?
case $TargetPlatform in
# Apples mach-o platforms use leading underscores
*-apple-*) fptools_cv_leading_underscore=yes;;
*linux-android*) fptools_cv_leading_underscore=no;;
*openbsd*) # x86 openbsd is ELF from 3.4 >, meaning no leading uscore
case $build in
i386-*2\.@<:@0-9@:>@ | i386-*3\.@<:@0-3@:>@ ) fptools_cv_leading_underscore=yes ;;
*) fptools_cv_leading_underscore=no ;;
esac ;;
i386-unknown-mingw32) fptools_cv_leading_underscore=yes;;
x86_64-unknown-mingw32) fptools_cv_leading_underscore=no;;
*) AC_RUN_IFELSE([AC_LANG_SOURCE([[#ifdef HAVE_NLIST_H
#include <nlist.h>
struct nlist xYzzY1[] = {{"xYzzY1", 0},{0}};
struct nlist xYzzY2[] = {{"_xYzzY2", 0},{0}};
#endif
int main(argc, argv)
int argc;
char **argv;
{
#ifdef HAVE_NLIST_H
if(nlist(argv[0], xYzzY1) == 0 && xYzzY1[0].n_value != 0)
exit(1);
if(nlist(argv[0], xYzzY2) == 0 && xYzzY2[0].n_value != 0)
exit(0);
#endif
exit(1);
}]])],[fptools_cv_leading_underscore=yes],[fptools_cv_leading_underscore=no],[fptools_cv_leading_underscore=no])
;;
esac]);
AC_SUBST([LeadingUnderscore], [`echo $fptools_cv_leading_underscore | sed 'y/yesno/YESNO/'`])
if test x"$fptools_cv_leading_underscore" = xyes; then
AC_SUBST([CabalLeadingUnderscore],[True])
AC_DEFINE([LEADING_UNDERSCORE], [1], [Define to 1 if C symbols have a leading underscore added by the compiler.])
else
AC_SUBST([CabalLeadingUnderscore],[False])
fi
])# FP_LEADING_UNDERSCORE
# FP_COMPARE_VERSIONS(VERSION1, TEST, VERSION2, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
# ----------------------------------------------------------------------------------
# Compare dotted version numbers VERSION1 and VERSION2 lexicographically according
# to TEST (one of -eq, -ne, -lt, -le, -gt, or -ge).
AC_DEFUN([FP_COMPARE_VERSIONS],
[fp_version1=$1; fp_version2=$3
fp_save_IFS=$IFS; IFS='.'
while test x"$fp_version1" != x || test x"$fp_version2" != x
do
set dummy $fp_version1; shift
fp_num1=""
test $[@%:@] = 0 || { fp_num1="[$]1"; shift; }
test x"$fp_num1" = x && fp_num1="0"
fp_version1="[$]*"
set dummy $fp_version2; shift
fp_num2=""
test $[@%:@] = 0 || { fp_num2="[$]1"; shift; }
test x"$fp_num2" = x && fp_num2="0"
fp_version2="[$]*"
test "$fp_num1" = "$fp_num2" || break;
done
IFS=$fp_save_IFS
AS_IF([test "$fp_num1" $2 "$fp_num2"], [$4], [$5])[]dnl
])# FP_COMPARE_VERSIONS
dnl
dnl Check for Happy and version.
dnl If there's no installed Happy, we look
dnl for a happy source tree and point the build system at that instead.
dnl If you increase the minimum version requirement, please also update:
dnl https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Tools
dnl
AC_DEFUN([FPTOOLS_HAPPY],
[AC_PATH_PROG(HappyCmd,happy,)
AC_CACHE_CHECK([for version of happy], fptools_cv_happy_version,
changequote(, )dnl
[if test x"$HappyCmd" != x; then
fptools_cv_happy_version=`"$HappyCmd" -v |
grep 'Happy Version' | sed -e 's/Happy Version \([^ ]*\).*/\1/g'` ;
else
fptools_cv_happy_version="";
fi;
changequote([, ])dnl
])
if test ! -f compiler/parser/Parser.hs || test ! -f compiler/cmm/CmmParse.hs
then
FP_COMPARE_VERSIONS([$fptools_cv_happy_version],[-lt],[1.19.4],
[AC_MSG_ERROR([Happy version 1.19.4 or later is required to compile GHC.])])[]
fi
HappyVersion=$fptools_cv_happy_version;
AC_SUBST(HappyVersion)
])
dnl
dnl Check for Alex and version.
dnl If you increase the minimum version requirement, please also update:
dnl https://ghc.haskell.org/trac/ghc/wiki/Building/Preparation/Tools
dnl
AC_DEFUN([FPTOOLS_ALEX],
[
AC_PATH_PROG(AlexCmd,alex,)
AC_CACHE_CHECK([for version of alex], fptools_cv_alex_version,
changequote(, )dnl
[if test x"$AlexCmd" != x; then
fptools_cv_alex_version=`"$AlexCmd" -v |
grep 'Alex [Vv]ersion' | sed -e 's/Alex [Vv]ersion \([0-9\.]*\).*/\1/g'` ;
else
fptools_cv_alex_version="";
fi;
changequote([, ])dnl
])
FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-ge],[3.0],
[Alex3=YES],[Alex3=NO])
if test ! -f compiler/cmm/CmmLex.hs || test ! -f compiler/parser/Lexer.hs
then
FP_COMPARE_VERSIONS([$fptools_cv_alex_version],[-lt],[3.1.0],
[AC_MSG_ERROR([Alex version 3.1.0 or later is required to compile GHC.])])[]
fi
AlexVersion=$fptools_cv_alex_version;
AC_SUBST(AlexVersion)
AC_SUBST(Alex3)
])
# FP_PROG_LD_FLAG
# ---------------
# Sets the output variable $2 to $1 if ld supports the $1 flag.
# Otherwise the variable's value is empty.
AC_DEFUN([FP_PROG_LD_FLAG],
[
AC_CACHE_CHECK([whether ld understands $1], [fp_cv_$2],
[echo 'int foo() { return 0; }' > conftest.c
${CC-cc} -c conftest.c
if ${LdCmd} -r $1 -o conftest2.o conftest.o > /dev/null 2>&1; then
fp_cv_$2=$1
else
fp_cv_$2=
fi
rm -rf conftest*])
$2=$fp_cv_$2
])# FP_PROG_LD_FLAG
# FP_PROG_LD_BUILD_ID
# ------------
# Sets the output variable LdHasBuildId to YES if ld supports
# --build-id, or NO otherwise.
AC_DEFUN([FP_PROG_LD_BUILD_ID],
[
AC_CACHE_CHECK([whether ld understands --build-id], [fp_cv_ld_build_id],
[echo 'int foo() { return 0; }' > conftest.c
${CC-cc} -c conftest.c
if ${LdCmd} -r --build-id=none -o conftest2.o conftest.o > /dev/null 2>&1; then
fp_cv_ld_build_id=yes
else
fp_cv_ld_build_id=no
fi
rm -rf conftest*])
if test "$fp_cv_ld_build_id" = yes; then
LdHasBuildId=YES
else
LdHasBuildId=NO