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configure
executable file
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configure
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#! /bin/sh
#**************************************************************************
#* *
#* OCaml *
#* *
#* Xavier Leroy, projet Cristal, INRIA Rocquencourt *
#* *
#* Copyright 1999 Institut National de Recherche en Informatique et *
#* en Automatique. *
#* *
#* All rights reserved. This file is distributed under the terms of *
#* the GNU Lesser General Public License version 2.1, with the *
#* special exception on linking described in the file LICENSE. *
#* *
#**************************************************************************
ocamlversion=`head -1 VERSION`
echo "Configuring OCaml version $ocamlversion"
configure_options="$*"
prefix=/usr/local
bindir=''
target_bindir=''
libdir=''
mandir=''
programs_man_section=1
libraries_man_section=3
host_type=unknown
target_type=""
ccoption=''
cpp='cpp'
asoption=''
asppoption=''
cclibs=''
mathlib='-lm'
dllib=''
x11_include_dir=''
x11_lib_dir=''
libunwind_include_dir=''
libunwind_lib_dir=''
libunwind_available=false
disable_libunwind=false
graph_wanted=yes
pthread_wanted=yes
dl_defs=''
verbose=false
debugruntime=true
with_sharedlibs=true
partialld="ld -r"
with_debugger=ocamldebugger
with_ocamldoc=ocamldoc
with_frame_pointers=false
with_spacetime=false
enable_call_counts=true
with_profinfo=false
profinfo_width=0
no_naked_pointers=false
native_compiler=true
TOOLPREF=""
with_cfi=true
flambda=false
force_safe_string=false
default_safe_string=true
afl_instrument=false
max_testsuite_dir_retries=0
with_cplugins=false
with_fpic=false
flat_float_array=true
# we distinguish '' (not set) from 'true' (explicitly set by the user)
with_instrumented_runtime=''
# Try to turn internationalization off, can cause config.guess to malfunction!
unset LANG
unset LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES LC_MONETARY LC_NUMERIC LC_TIME
# Turn off some MacOS X debugging stuff, same reason
unset RC_TRACE_ARCHIVES RC_TRACE_DYLIBS RC_TRACE_PREBINDING_DISABLED
# The inf(), wrn(), err() functions below can be used to provide a consistent
# way to notify the user. The notification is always given to the stdout
# descriptor.
#
# Their output is redirected to a file-descriptor "3" which is then redirected
# to fd 1 at the level of the whole configure script. This is done to not
# conflict with how values are returned from functions in shell script.
# Consider the following where "It works!" would be mixed with "42".
# do_foo() {
# if some_command; then
# inf "It works!"
# echo "42"
# fi
# }
inf() {
printf "%b\n" "$*" 1>&3
}
wrn() {
printf "[WARNING] %b\n" "$*" 1>&3
}
err() {
printf "[ERROR!] %b\n" "$*" 1>&3
exit 2
}
exec 3>&1
# Parse command-line arguments
while : ; do
case "$1" in
"") break;;
-prefix|--prefix)
prefix=$2; shift;;
-bindir|--bindir)
bindir=$2; shift;;
-target-bindir|--target-bindir)
target_bindir="$2"; shift;;
-libdir|--libdir)
libdir=$2; shift;;
-mandir|--mandir)
case "$2" in
*/man[1-9ln])
mandir=`echo $2 | sed -e 's|^\(.*\)/man.$|\1|'`
programs_man_section=`echo $2 | sed -e 's/^.*\(.\)$/\1/'`;;
*)
mandir=$2;;
esac
shift;;
-libunwinddir|--libunwinddir)
libunwind_include_dir=$2/include;
libunwind_lib_dir=$2/lib;
shift;;
-libunwindlib|--libunwindlib)
libunwind_lib_dir=$2; shift;;
-libunwindinclude|--libunwindinclude)
libunwind_include_dir=$2; shift;;
-disable-libunwind|--disable-libunwind)
disable_libunwind=true;;
-host*|--host*)
host_type=$2; shift;;
-target*|--target*)
target_type=$2; shift;;
-cc*)
ccoption="$2"; shift;;
-as)
asoption="$2"; shift;;
-aspp)
asppoption="$2"; shift;;
-lib*)
cclibs="$2 $cclibs"; shift;;
-no-curses|--no-curses)
;; # Ignored for backward compatibility
-no-shared-libs|--no-shared-libs)
with_sharedlibs=false;;
-x11include*|--x11include*)
x11_include_dir=$2; shift;;
-x11lib*|--x11lib*)
x11_lib_dir=$2; shift;;
-no-graph|--no-graph) graph_wanted=no;;
-with-pthread*|--with-pthread*)
;; # Ignored for backward compatibility
-no-pthread*|--no-pthread*)
pthread_wanted=no;;
-partialld|--partialld)
partialld="$2"; shift;;
-dldefs*|--dldefs*)
dl_defs="$2"; shift;;
-dllibs*|--dllibs*)
dllib="$2"; shift;;
-verbose|--verbose)
verbose=true;;
-with-debug-runtime|--with-debug-runtime)
debugruntime=true;; # default
-no-debug-runtime|--no-debug-runtime)
debugruntime=false;;
-with-instrumented-runtime|--with-instrumented-runtime)
with_instrumented_runtime=true;;
-no-instrumented-runtime|--no-instrumented-runtime)
with_instrumented_runtime=false;;
-no-debugger|--no-debugger)
with_debugger="";;
-no-ocamldoc|--no-ocamldoc)
with_ocamldoc="";;
-no-ocamlbuild|--no-ocamlbuild)
;; # ignored for backward compatibility
-with-frame-pointers|--with-frame-pointers)
with_frame_pointers=true;;
-no-naked-pointers|--no-naked-pointers)
no_naked_pointers=true;;
-spacetime|--spacetime)
with_spacetime=true; with_profinfo=true; profinfo_width=26;;
-disable-call-counts|--disable-call-counts)
enable_call_counts=false;;
-reserved-header-bits|--reserved-header-bits)
with_spacetime=false; with_profinfo=true; profinfo_width=$2;shift
case $profinfo_width in
0) with_profinfo=false;;
[0123456789]);;
1?|2?);;
3[012]);;
*) err "--reserved-header-bits argument must be less than 32"
esac
;;
-no-cfi|--no-cfi)
with_cfi=false;;
-no-native-compiler|--no-native-compiler)
native_compiler=false;;
-flambda|--flambda)
flambda=true;;
-with-cplugins|--with-cplugins)
with_cplugins=true;;
-no-cplugins|--no-cplugins)
;; # Ignored for backward compatibility
-fPIC|--fPIC)
with_fpic=true;;
# There are two configure-time string safety options,
# -(no-)force-safe-string and -default-(un)safe-string that
# interact with a compile-time (un)safe-string option.
#
# If -force-safe-string is set at configure time, then the compiler
# will always enforce that string and bytes are distinct: the
# compile-time -unsafe-string option is disabled. This lets us
# assume pervasive string immutability, for code optimizations and
# in the C layer.
#
# If -no-force-safe-string is set at configure-time, the compiler
# will use the compile-time (un)safe-string option to decide whether
# string and bytes are compatible on a per-file basis. The
# configure-time options default-(un)safe-string decide which
# setting will be chosen by default, if no compile-time option is
# explicitly passed.
#
# The configure-time behavior of OCaml 4.05 and older was equivalent
# to -no-force-safe-string -default-unsafe-string. OCaml 4.06
# uses -no-force-safe-string -default-safe-string. We
# expect -force-safe-string to become the default in the future.
-force-safe-string|--force-safe-string)
force_safe_string=true;;
-no-force-safe-string|--no-force-safe-string)
force_safe_string=false;;
-default-safe-string|--default-safe-string)
default_safe_string=true;;
-default-unsafe-string|--default-unsafe-string)
default_safe_string=false;;
-flat-float-array|--flat-float-array)
flat_float_array=true;;
-no-flat-float-array|--no-flat-float-array)
flat_float_array=false;;
-afl-instrument)
afl_instrument=true;;
*) if echo "$1" | grep -q -e '^--\?[a-zA-Z0-9-]\+='; then
err "configure expects arguments of the form '-prefix /foo/bar'," \
"not '-prefix=/foo/bar' (note the '=')."
else
err "Unknown option \"$1\"."
fi;;
esac
shift
done
# Sanity checks
case "$prefix" in
/*) ;;
*) err "The -prefix directory must be absolute.";;
esac
case "$bindir" in
/*) ;;
"") ;;
'$(PREFIX)/'*) ;;
*) err 'The -bindir directory must be absolute or relative to $(PREFIX).';;
esac
case "$libdir" in
/*) ;;
"") ;;
'$(PREFIX)/'*) ;;
*) err 'The -libdir directory must be absolute or relative to $(PREFIX).';;
esac
case "$mandir" in
/*) ;;
"") ;;
'$(PREFIX)/'*) ;;
*) err 'The -mandir directory must be absolute or relative to $(PREFIX).';;
esac
# Generate the files
cd config/auto-aux
rm -f s.h m.h Makefile
touch s.h m.h Makefile
# Write options to Makefile
config() {
# This function hardens the generated Makefile against '#' symbols
# present in a source path (opam-compiler-conf may pick such directory
# names if working from a branch named 'PR#4242-answer-all-questions')
# by escaping them into '\#'.
# When injecting data in Makefiles, it is customary to also escape
# '$', which get turned into '$$'. However, this transformation is
# invalid here as some of the variables are meant to be code
# interpreted by make: for example, passing
# --bindir "$(PREFIX)/bin2"
# is explicitly supported (see "or relative to $(PREFIX)" messages above).
# Finally, it is also impossible for the user to escape the '#' signs
# before calling this configure script, given that
# $(PREFIX) is also injected in C code where this escape is invalid
# -- see the definition of the OCAML_STDLIB_DIR macro below.
echo "$1=$2" | sed 's/#/\\#/g' >> Makefile
}
echo "# generated by ./configure $configure_options" >> Makefile
config CONFIGURE_ARGS "$configure_options"
# Where to install
config PREFIX "$prefix"
case "$bindir" in
"") config BINDIR '$(PREFIX)/bin'
bindir="$prefix/bin";;
*) config BINDIR "$bindir";;
esac
config BYTERUN '$(BINDIR)/ocamlrun'
case "$libdir" in
"") config LIBDIR '$(PREFIX)/lib/ocaml'
libdir="$prefix/lib/ocaml";;
*) config LIBDIR "$libdir";;
esac
config STUBLIBDIR '$(LIBDIR)/stublibs'
case "$mandir" in
"") config MANDIR '$(PREFIX)/man'
mandir="$prefix/man";;
*) config MANDIR "$mandir";;
esac
config PROGRAMS_MAN_SECTION "$programs_man_section"
config LIBRARIES_MAN_SECTION "$libraries_man_section"
# Determine the system type
if test "$host_type" = "unknown"; then
if host_type=`sh ../gnu/config.guess`; then :; else
err "Cannot guess host type. You must specify one with the -host option."
fi
fi
if host=`sh ../gnu/config.sub $host_type`; then :; else
err "Please specify the correct host type with the -host option"
fi
inf "Configuring for host $host ..."
if test -n "$target_type"; then
target="$target_type"
TOOLPREF="${target}-"
else
target="$host"
fi
inf "Configuring for target $target ..."
if [ x"$host" = x"$target" ]; then
cross_compiler=false
else
cross_compiler=true
fi
# Do we have gcc?
if test -z "$ccoption"; then
if sh ./searchpath "${TOOLPREF}gcc"; then
cc="${TOOLPREF}gcc"
else
if $cross_compiler; then
err "No cross-compiler found for ${target}.\n" \
"It should be named ${TOOLPREF}gcc and be in the PATH."
else
cc="cc"
fi
fi
else
cc="$ccoption"
fi
inf "Using compiler $cc."
# Configure compiler to use in further tests.
export cc verbose
# Determine the C compiler family (GCC, Clang, etc)
ccfamily=`$cc -E cckind.c | grep '^[a-z]' | tr -s ' ' '-'`
case $? in
0) inf "Compiler family and version: $ccfamily.";;
*) err "Unable to preprocess the test program.\n" \
"Make sure the C compiler $cc is properly installed.";;
esac
# The BYTECODE_C_COMPILER make variable says how the C compiler should be
# invoked to process a third-party C source file passed to ocamlc
# when no -cc command-line option has been specified.
# The BYTECCCOMPOPTS make variable contains options to pass to the C
# compiler but only when compiling C files that belong to the OCaml
# distribution.
# In other words, when ocamlc is called to compile a third-party C
# source file, it will _not_ pass these options to the C compiler.
# The SHAREDCCCOMPOPTS make variable contains options to use to compile C
# source files so that the resulting object files can then be integrated
# into shared libraries. It is passed to BYTECC for both C source files
# in the OCaml distribution and third-party C source files compiled
# with ocamlc.
mkexe="\$(CC) \$(CFLAGS) \$(CPPFLAGS) \$(LDFLAGS)"
mkexedebugflag="-g"
common_cflags=""
common_cppflags=""
internal_cflags=""
internal_cppflags=""
ocamlc_cflags=""
ocamlc_cppflags=""
ocamlopt_cflags=""
ocamlopt_cppflags=""
ldflags=""
ostype="Unix"
exe=""
iflexdir=""
SO="so"
TOOLCHAIN="cc"
# Choose reasonable options based on compiler kind
# We select high optimization levels, provided we can turn off:
# - strict type-based aliasing analysis (too risky for the OCaml runtime)
# - strict no-overflow conditions on signed integer arithmetic
# (the OCaml runtime assumes Java-style behavior of signed integer arith.)
# Concerning optimization level, -O3 is somewhat risky, so take -O2.
# Concerning language version, gnu99 is ISO C99 plus GNU extensions
# that are often used in standard headers. Older GCC versions
# defaults to gnu89, which is not C99. Clang defaults to gnu99 or
# gnu11, which is fine.
case "$ocamlversion" in
*+dev*) gcc_warnings="-Wall -Werror";;
*) gcc_warnings="-Wall";;
esac
case "$ccfamily" in
clang-*)
common_cflags="-O2 -fno-strict-aliasing -fwrapv";
internal_cflags="$gcc_warnings";;
gcc-[012]-*)
# Some versions known to miscompile OCaml, e,g, 2.7.2.1, some 2.96.
# Plus: C99 support unknown.
err "This version of GCC is too old. Please use GCC version 4.2 or above.";;
gcc-3-*|gcc-4-[01])
# No -fwrapv option before GCC 3.4.
# Known problems with -fwrapv fixed in 4.2 only.
wrn "This version of GCC is rather old. Reducing optimization level."
wrn "Consider using GCC version 4.2 or above."
common_cflags="-std=gnu99 -O";
internal_cflags="$gcc_warnings";;
gcc-4-*)
common_cflags="-std=gnu99 -O2 -fno-strict-aliasing -fwrapv \
-fno-builtin-memcmp";
internal_cflags="$gcc_warnings";;
gcc-*)
common_cflags="-O2 -fno-strict-aliasing -fwrapv";
internal_cflags="$gcc_warnings";;
*)
common_cflags="-O";;
esac
internal_cppflags="-DCAML_NAME_SPACE $internal_cppflags"
# Adjust according to target
case "$cc,$target" in
*,*-*-rhapsody*)
common_cppflags="-DSHRINKED_GNUC $common_cppflags"
mathlib="";;
*,*-*-darwin*)
mathlib=""
mkexe="$mkexe -Wl,-no_compact_unwind"
# Tell gcc that we can use 32-bit code addresses for threaded code
# unless we are compiled for a shared library (-fPIC option)
echo "#ifndef __PIC__" >> m.h
echo "# define ARCH_CODE32" >> m.h
echo "#endif" >> m.h;;
*,*-*-haiku*)
# No -lm library
mathlib="";;
*,*-*-beos*)
# No -lm library
mathlib="";;
*gcc,alpha*-*-osf*)
if sh ./hasgot -mieee; then
common_cflags="-mieee $common_cflags";
fi
# Put code and static data in lower 4GB
ldflags="-Wl,-T,12000000 -Wl,-D,14000000"
# Tell gcc that we can use 32-bit code addresses for threaded code
echo "#define ARCH_CODE32" >> m.h;;
cc,alpha*-*-osf*)
common_cflags="-std1 -ieee";;
*gcc*,alpha*-*-linux*)
if sh ./hasgot -mieee; then
common_cflags="-mieee $common_cflags";
fi;;
*,mips-*-irix6*)
# Turn off warning "unused library"
ldflags="-n32 -Wl,-woff,84";;
*,alpha*-*-unicos*)
# For the Cray T3E
common_cppflags="$common_cppflags -DUMK";;
*,powerpc-*-aix*)
# Avoid name-space pollution by requiring Unix98-conformant includes
common_cppflags="$common_cppflags -D_XOPEN_SOURCE=500 -D_ALL_SOURCE";;
*,*-*-cygwin*)
case $target in
i686-*) flavor=cygwin;;
x86_64-*) flavor=cygwin64;;
*) err "unknown cygwin variant";;
esac
common_cppflags="$common_cppflags -U_WIN32"
if $with_sharedlibs; then
flexlink="flexlink -chain $flavor -merge-manifest -stack 16777216"
flexdir=`$flexlink -where | tr -d '\015'`
if test -z "$flexdir"; then
wrn "flexlink not found: native shared libraries won't be available."
with_sharedlibs=false
else
iflexdir="-I\"$flexdir\""
mkexe="$flexlink -exe"
mkexedebugflag="-link -g"
fi
fi
if ! $with_sharedlibs; then
mkexe="$mkexe -Wl,--stack,16777216"
ldflags="-Wl,--stack,16777216"
fi
exe=".exe"
ostype="Cygwin";;
*,*-*-mingw*)
if $with_sharedlibs; then
case "$target" in
i686-*-*) flexlink_chain="mingw";;
x86_64-*-*) flexlink_chain="mingw64";;
esac
flexlink="flexlink -chain $flexlink_chain -merge-manifest -stack 16777216"
flexdir=`$flexlink -where`
if test -z "$flexdir"; then
wrn "flexlink not found: native shared libraries won't be available."
with_sharedlibs=false
else
iflexdir="-I\"$flexdir\""
mkexe="$flexlink -exe"
mkexedebugflag="-link -g"
fi
fi
exe=".exe"
ostype="Win32"
TOOLCHAIN="mingw"
SO="dll"
;;
*,x86_64-*-linux*)
# Tell gcc that we can use 32-bit code addresses for threaded code
# unless we are compiled for a shared library (-fPIC option)
echo "#ifndef __PIC__" >> m.h
echo "# define ARCH_CODE32" >> m.h
echo "#endif" >> m.h;;
esac
# Configure compiler options to use in further tests.
export cclibs ldflags
# Check C compiler.
cflags="$common_cflags $internal_cflags" sh ./runtest ansi.c
case $? in
0) inf "The C compiler is ISO C99 compliant." ;;
1) wrn "The C compiler is ANSI / ISO C90 compliant, but not ISO C99" \
"compliant.";;
2) err "The C compiler $cc is not ISO C compliant.\n" \
"You need an ISO C99 compiler to build OCaml.";;
*)
if $cross_compiler; then
wrn "Unable to compile the test program.\n" \
"This failure is expected for cross-compilation:\n" \
"we will assume the C compiler is ISO C99-compliant."
else
err "Unable to compile the test program.\n" \
"Make sure the C compiler $cc is properly installed."
fi;;
esac
# For cross-compilation, we need a host-based ocamlrun and ocamlyacc,
# and the user must specify the target BINDIR
if $cross_compiler; then
if ! sh ./searchpath ocamlrun; then
err "Cross-compilation requires an ocaml runtime environment\n" \
"(the ocamlrun binary). Moreover, its version must be the same\n" \
"as the one you're trying to build (`cut -f1 -d+ < ../../VERSION`)."
else
ocaml_system_version=`ocamlrun -version | sed 's/[^0-9]*\([0-9.]*\).*/\1/'`
ocaml_source_version=`sed -n '1 s/\([0-9\.]*\).*/\1/ p' < ../../VERSION`
if test x"$ocaml_system_version" != x"$ocaml_source_version"; then
err "While you have an ocaml runtime environment, its version\n" \
"($ocaml_system_version) doesn't match the version of these\n" \
"sources ($ocaml_source_version)."
else
config CAMLRUN "`./searchpath -p ocamlrun`"
fi
fi
if ! sh ./searchpath ocamlyacc; then
err "Cross-compilation requires an ocamlyacc binary."
else
ocamlyacc 2>/dev/null
if test "$?" -ne 1; then
err "While you have an ocamlyacc binary, it cannot be executed" \
"successfully."
else
config CAMLYACC "`./searchpath -p ocamlyacc`"
fi
fi
if [ -z "$target_bindir" ]; then
err "Cross-compilation requires -target-bindir."
else
config TARGET_BINDIR "$target_bindir"
fi
fi # cross-compiler
# Check the sizes of data types
# OCaml needs a 32 or 64 bit architecture, a 32-bit integer type and
# a 64-bit integer type
inf "Checking the sizes of integers and pointers..."
ret=`sh ./runtest sizes.c`
# $1 = sizeof(int)
# $2 = sizeof(long)
# $3 = sizeof(pointers)
# $4 = sizeof(short)
# $5 = sizeof(long long)
if test "$?" -eq 0; then
set $ret
case "$3" in
4) inf "OK, this is a regular 32 bit architecture."
echo "#undef ARCH_SIXTYFOUR" >> m.h
arch64=false;;
8) inf "Wow! A 64 bit architecture!"
echo "#define ARCH_SIXTYFOUR" >> m.h
arch64=true;;
*) err "This architecture seems to be neither 32 bits nor 64 bits.\n" \
"OCaml won't run on this architecture.";;
esac
else
# For cross-compilation, runtest always fails: add special handling.
case "$target" in
i686-*-mingw*) inf "OK, this is a regular 32 bit architecture."
echo "#undef ARCH_SIXTYFOUR" >> m.h
set 4 4 4 2 8
arch64=false;;
x86_64-*-mingw*) inf "Wow! A 64 bit architecture!"
echo "#define ARCH_SIXTYFOUR" >> m.h
set 4 4 8 2 8
arch64=true;;
*) err "Since datatype sizes cannot be guessed when cross-compiling,\n" \
"a hardcoded list is used but your architecture isn't known yet.\n" \
"You need to determine the sizes yourself.\n" \
"Please submit a bug report in order to expand the list." ;;
esac
fi
if test $1 != 4 && test $2 != 4 && test $4 != 4; then
err "Sorry, we can't find a 32-bit integer type\n" \
"(sizeof(short) = $4, sizeof(int) = $1, sizeof(long) = $2)\n" \
"OCaml won't run on this architecture."
fi
if test $2 != 8 && test $5 != 8; then
err "Sorry, we can't find a 64-bit integer type\n" \
"(sizeof(long) = $2, sizeof(long long) = $5)\n" \
"OCaml won't run on this architecture."
fi
echo "#define SIZEOF_INT $1" >> m.h
echo "#define SIZEOF_LONG $2" >> m.h
echo "#define SIZEOF_PTR $3" >> m.h
echo "#define SIZEOF_SHORT $4" >> m.h
echo "#define SIZEOF_LONGLONG $5" >> m.h
echo "#define INT64_LITERAL(s) s ## LL" >> m.h
# Determine endianness
sh ./runtest endian.c
case $? in
0) inf "This is a big-endian architecture."
echo "#define ARCH_BIG_ENDIAN" >> m.h;;
1) inf "This is a little-endian architecture."
echo "#undef ARCH_BIG_ENDIAN" >> m.h;;
2) err "This architecture seems to be neither big endian nor little" \
"endian.\n OCaml won't run on this architecture.";;
*) case $target in
*-*-mingw*) inf "This is a little-endian architecture."
echo "#undef ARCH_BIG_ENDIAN" >> m.h;;
*) wrn "Something went wrong during endianness determination.\n" \
"You will have to figure out endianness yourself\n" \
"(option ARCH_BIG_ENDIAN in m.h).";;
esac;;
esac
# Determine alignment constraints
case "$target" in
sparc*-*-*|hppa*-*-*|arm*-*-*|mips*-*-*)
# On Sparc V9 with certain versions of gcc, determination of double
# alignment is not reliable (PR#1521), hence force it.
# Same goes for hppa.
# PR#5088 suggests same problem on ARM.
# PR#5280 reports same problem on MIPS.
# But there's a knack (PR#2572):
# if we're in 64-bit mode (sizeof(long) == 8),
# we must not doubleword-align floats...
if test $2 = 8; then
inf "Doubles can be word-aligned."
echo "#undef ARCH_ALIGN_DOUBLE" >> m.h
else
inf "Doubles must be doubleword-aligned."
echo "#define ARCH_ALIGN_DOUBLE" >> m.h
fi;;
*)
sh ./runtest dblalign.c
case $? in
0) inf "Doubles can be word-aligned."
echo "#undef ARCH_ALIGN_DOUBLE" >> m.h;;
1) inf "Doubles must be doubleword-aligned."
echo "#define ARCH_ALIGN_DOUBLE" >> m.h;;
*) case "$target" in
*-*-mingw*) inf "Doubles can be word-aligned."
echo "#undef ARCH_ALIGN_DOUBLE" >> m.h;;
*) wrn "Something went wrong during alignment determination for" \
"doubles.\n" \
"We will assume alignment constraints over doubles.\n" \
"That's a safe bet: OCaml will work even if\n" \
"this architecture actually has no alignment constraints."
echo "#define ARCH_ALIGN_DOUBLE" >> m.h;;
esac;;
esac;;
esac
case "$target" in
# PR#5088: autodetection is unreliable on ARM. PR#5280: also on MIPS.
sparc*-*-*|hppa*-*-*|arm*-*-*|mips*-*-*)
if test $2 = 8; then
inf "64-bit integers can be word-aligned."
echo "#undef ARCH_ALIGN_INT64" >> m.h
else
inf "64-bit integers must be doubleword-aligned."
echo "#define ARCH_ALIGN_INT64" >> m.h
fi;;
*-*-mingw*) true;; # Nothing is in config/m-nt.h so don't add anything.
*)
sh ./runtest int64align.c
case $? in
0) inf "64-bit integers can be word-aligned."
echo "#undef ARCH_ALIGN_INT64" >> m.h;;
1) inf "64-bit integers must be doubleword-aligned."
echo "#define ARCH_ALIGN_INT64" >> m.h;;
*) wrn "Something went wrong during alignment determination for\n" \
"64-bit integers. I'm going to assume this architecture has\n" \
"alignment constraints. That's a safe bet: OCaml will work\n" \
"even if this architecture has actually no alignment\n" \
"constraints."
echo "#define ARCH_ALIGN_INT64" >> m.h;;
esac
esac
# Shared library support
shared_libraries_supported=false
dl_needs_underscore=false
sharedcccompopts=''
mksharedlib='shared-libs-not-available'
rpath=''
mksharedlibrpath=''
natdynlinkopts=""
if $with_sharedlibs; then
case "$target" in
*-*-cygwin*)
mksharedlib="$flexlink"
mkmaindll="$flexlink -maindll"
shared_libraries_supported=true;;
*-*-mingw*)
mksharedlib="$flexlink"
mkmaindll="$flexlink -maindll"
shared_libraries_supported=true;;
alpha*-*-osf*)
case "$cc" in
*gcc*)
sharedcccompopts="-fPIC"
mksharedlib="$cc -shared"
rpath="-Wl,-rpath,"
mksharedlibrpath="-Wl,-rpath,"
shared_libraries_supported=true;;
cc*)
sharedcccompopts=""
mksharedlib="ld -shared -expect_unresolved '*'"
rpath="-Wl,-rpath,"
mksharedlibrpath="-rpath "
shared_libraries_supported=true;;
esac;;
*-*-solaris2*)
case "$cc" in
*gcc*)
sharedcccompopts="-fPIC"
if sh ./solaris-ld; then
mksharedlib="ld -G"
rpath="-R"
mksharedlibrpath="-R"
else
mksharedlib="$cc -shared"
ldflags="$ldflags -Wl,-E"
natdynlinkopts="-Wl,-E"
rpath="-Wl,-rpath,"
mksharedlibrpath="-Wl,-rpath,"
fi
shared_libraries_supported=true;;
*)
sharedcccompopts="-KPIC"
rpath="-R"
mksharedlibrpath="-R"
mksharedlib="/usr/ccs/bin/ld -G"
shared_libraries_supported=true;;
esac;;
mips*-*-irix[56]*)
case "$cc" in
cc*) sharedcccompopts="";;
*gcc*) sharedcccompopts="-fPIC";;
esac
mksharedlib="ld -shared -rdata_shared"
rpath="-Wl,-rpath,"
mksharedlibrpath="-rpath "
shared_libraries_supported=true;;
i[3456]86-*-darwin[89].*)
mksharedlib="$cc -shared -flat_namespace -undefined suppress \
-read_only_relocs suppress"
common_cflags="$dl_defs $common_cflags"
dl_needs_underscore=false
shared_libraries_supported=true;;
*-apple-darwin*)
mksharedlib="$cc -shared -flat_namespace -undefined suppress \
-Wl,-no_compact_unwind"
common_cflags="$dl_defs $common_cflags"
dl_needs_underscore=false
shared_libraries_supported=true;;
*-*-linux*|*-*-freebsd[3-9]*|*-*-freebsd[1-9][0-9]*\
|*-*-openbsd*|*-*-netbsd*|*-*-dragonfly*|*-*-gnu*|*-*-haiku*)
sharedcccompopts="-fPIC"
mksharedlib="$cc -shared"
ldflags="$ldflags -Wl,-E"
rpath="-Wl,-rpath,"
mksharedlibrpath="-Wl,-rpath,"
natdynlinkopts="-Wl,-E"
shared_libraries_supported=true;;
powerpc-*-aix*)
case "$ccfamily" in
xlc-*)sharedcccompopts="-qpic"
mksharedlib="$cc -qmkshrobj -G"
mksharedlibrpath="-Wl,-blibpath,"
ldflags="$ldflags -brtl -bexpfull"
dl_needs_underscore=false
rpath="-Wl,-blibpath,"
shared_libraries_supported=true;;
esac
esac
fi
if test -z "$mkmaindll"; then
mkmaindll=$mksharedlib
fi
# Configure native dynlink
natdynlink=false
if $with_sharedlibs; then
case "$target" in
*-*-cygwin*) natdynlink=true;;
*-*-mingw*) natdynlink=true;;
i[3456]86-*-linux*) natdynlink=true;;
i[3456]86-*-gnu*) natdynlink=true;;
x86_64-*-linux*) natdynlink=true;;
i[3456]86-*-darwin[89].*) natdynlink=true;;
i[3456]86-*-darwin*)
if test $arch64 == true; then
natdynlink=true
fi;;
x86_64-*-darwin*) natdynlink=true;;
s390x*-*-linux*) natdynlink=true;;
powerpc*-*-linux*) natdynlink=true;;
i686-*-kfreebsd*) natdynlink=true;;
x86_64-*-kfreebsd*) natdynlink=true;;
x86_64-*-dragonfly*) natdynlink=true;;
i[3456]86-*-freebsd*) natdynlink=true;;
x86_64-*-freebsd*) natdynlink=true;;
i[3456]86-*-openbsd*) natdynlink=true;;
x86_64-*-openbsd*) natdynlink=true;;
i[3456]86-*-netbsd*) natdynlink=true;;
x86_64-*-netbsd*) natdynlink=true;;
i386-*-gnu0.3) natdynlink=true;;
i[3456]86-*-haiku*) natdynlink=true;;
arm*-*-linux*) natdynlink=true;;
arm*-*-freebsd*) natdynlink=true;;
earm*-*-netbsd*) natdynlink=true;;
aarch64-*-linux*) natdynlink=true;;
esac
fi
if test $natdynlink = "true"; then
cmxs="cmxs"
else
cmxs="cmxa"
fi
# Try to work around the Skylake/Kaby Lake processor bug.
case "$cc,$target" in
*gcc*,x86_64-*|*gcc*,i686-*)
if sh ./hasgot -Werror -fno-tree-vrp; then
internal_cflags="$internal_cflags -fno-tree-vrp"
inf "Adding -fno-tree-vrp option to work around PR#7452"
fi;;
esac
# Configure the native-code compiler
arch=none
model=default
system=unknown
case "$target" in
i[3456]86-*-linux*) arch=i386; system=linux_`sh ./runtest elf.c`;;
i[3456]86-*-*bsd*) arch=i386; system=bsd_`sh ./runtest elf.c`;;
i[3456]86-*-solaris*) if $arch64; then
arch=amd64; system=solaris
else
arch=i386; system=solaris
fi;;
i[3456]86-*-haiku*) arch=i386; system=beos;;
i[3456]86-*-beos*) arch=i386; system=beos;;
i[3456]86-*-cygwin*) arch=i386; system=cygwin;;
i[3456]86-*-darwin*) if $arch64; then
arch=amd64; system=macosx
else
arch=i386; system=macosx
fi;;
i[3456]86-*-gnu*) arch=i386; system=gnu;;
i[3456]86-*-mingw*) arch=i386; system=mingw;;
powerpc64le*-*-linux*) arch=power; model=ppc64le; system=elf;;
powerpc*-*-linux*) arch=power;
if $arch64; then model=ppc64; else model=ppc; fi
system=elf;;
powerpc-*-netbsd*) arch=power; model=ppc; system=netbsd;;
powerpc-*-openbsd*) arch=power; model=ppc; system=bsd_elf;;
s390x*-*-linux*) arch=s390x; model=z10; system=elf;;
armv6*-*-linux-gnueabihf) arch=arm; model=armv6; system=linux_eabihf;;
armv7*-*-linux-gnueabihf) arch=arm; model=armv7; system=linux_eabihf;;
armv8*-*-linux-gnueabihf) arch=arm; model=armv8; system=linux_eabihf;;
armv8*-*-linux-gnueabi) arch=arm; model=armv8; system=linux_eabi;;
armv7*-*-linux-gnueabi) arch=arm; model=armv7; system=linux_eabi;;
armv6t2*-*-linux-gnueabi) arch=arm; model=armv6t2; system=linux_eabi;;
armv6*-*-linux-gnueabi) arch=arm; model=armv6; system=linux_eabi;;
armv6*-*-freebsd*) arch=arm; model=armv6; system=freebsd;;
earmv6*-*-netbsd*) arch=arm; model=armv6; system=netbsd;;
earmv7*-*-netbsd*) arch=arm; model=armv7; system=netbsd;;
armv5te*-*-linux-gnueabi) arch=arm; model=armv5te; system=linux_eabi;;
armv5*-*-linux-gnueabi) arch=arm; model=armv5; system=linux_eabi;;
arm*-*-linux-gnueabi) arch=arm; system=linux_eabi;;
arm*-*-openbsd*) arch=arm; system=bsd;;
zaurus*-*-openbsd*) arch=arm; system=bsd;;
x86_64-*-linux*) arch=amd64; system=linux;;
x86_64-*-gnu*) arch=amd64; system=gnu;;
x86_64-*-dragonfly*) arch=amd64; system=dragonfly;;
x86_64-*-freebsd*) arch=amd64; system=freebsd;;
x86_64-*-netbsd*) arch=amd64; system=netbsd;;
x86_64-*-openbsd*) arch=amd64; system=openbsd;;
x86_64-*-darwin*) arch=amd64; system=macosx;;