/
configure.in
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/
configure.in
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dnl Process this file with autoconf to produce a configure script. -*-m4-*-
dnl %CopyrightBegin%
dnl
dnl Copyright Ericsson AB 1997-2010. All Rights Reserved.
dnl
dnl The contents of this file are subject to the Erlang Public License,
dnl Version 1.1, (the "License"); you may not use this file except in
dnl compliance with the License. You should have received a copy of the
dnl Erlang Public License along with this software. If not, it can be
dnl retrieved online at http://www.erlang.org/.
dnl
dnl Software distributed under the License is distributed on an "AS IS"
dnl basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
dnl the License for the specific language governing rights and limitations
dnl under the License.
dnl
dnl %CopyrightEnd%
dnl The string "FIXME convbreak" means that there is a break of
dnl autoconf convention that should be cleaned up.
AC_INIT(vsn.mk)
AC_PREREQ(2.59)
LM_PRECIOUS_VARS
if test "x$no_recursion" != "xyes" -a "x$OVERRIDE_CONFIG_CACHE" = "x"; then
# We do not want to use a common cache!
cache_file=/dev/null
fi
dnl How to set srcdir absolute is taken from the GNU Emacs distribution
#### Make srcdir absolute, if it isn't already. It's important to
#### avoid running the path through pwd unnecessary, since pwd can
#### give you automounter prefixes, which can go away.
case "${srcdir}" in
/* ) ;;
. )
## We may be able to use the $PWD environment variable to make this
## absolute. But sometimes PWD is inaccurate.
## Make sure CDPATH doesn't affect cd (in case PWD is relative).
CDPATH=
if test "${PWD}" != "" && test "`(cd ${PWD} ; sh -c pwd)`" = "`pwd`" ;
then
srcdir="$PWD"
else
srcdir="`(cd ${srcdir}; pwd)`"
fi
;;
* ) srcdir="`(cd ${srcdir}; pwd)`" ;;
esac
## Now, make sure that ERL_TOP is set and is the same as srcdir
##
if test -z "$ERL_TOP" || test ! -d $ERL_TOP ; then
AC_MSG_ERROR(You need to set the environment variable ERL_TOP!)
fi
if test x"${ERL_TOP}/erts" != x"$srcdir"; then
AC_MSG_ERROR([You need to run configure with argument --srcdir=${ERL_TOP}/erts])
fi
erl_top=${ERL_TOP}
# echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
# echo X
# echo "X srcdir = $srcdir"
# echo "X ERL_TOP = $ERL_TOP"
# echo X
# echo XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
AC_CONFIG_AUX_DIRS($srcdir/autoconf)
dnl ----------------------------------------------------------------------
dnl Figure out what system we are running on.
dnl ----------------------------------------------------------------------
#
# To configure for free source run ./configure --host=free_source
#
dnl
dnl AC_CANONICAL_HOST does not like free_source as a host specification,
dnl so we make a little special case.
dnl
if test "X$host" != "Xfree_source" -a "X$host" != "Xwin32"; then
AC_CANONICAL_HOST
else
host_os=$host
fi
ERL_XCOMP_SYSROOT_INIT
AC_ISC_POSIX
AC_CONFIG_HEADER($host/config.h:config.h.in include/internal/$host/ethread_header_config.h:include/internal/ethread_header_config.h.in include/$host/erl_int_sizes_config.h:include/erl_int_sizes_config.h.in)
dnl ----------------------------------------------------------------------
dnl Optional features.
dnl ----------------------------------------------------------------------
enable_child_waiter_thread=no
ENABLE_ALLOC_TYPE_VARS=
AC_SUBST(ENABLE_ALLOC_TYPE_VARS)
AC_ARG_ENABLE(bootstrap-only,
[ --enable-bootstrap-only enable bootstrap only configuration],
[ if test "X$enableval" = "Xyes"; then
# Disable stuff not necessary in a bootstrap only system in order
# to speed up things by reducing the amount of stuff needing to be
# built...
enable_threads=no
enable_smp_support=no
with_termcap=no
with_ssl=no
with_ssl_zlib=no
enable_hipe=no
enable_sctp=no
fi
])
AC_ARG_ENABLE(threads,
[ --enable-threads enable async thread support
--disable-threads disable async thread support],
[ case "$enableval" in
no) enable_threads=no ;;
*) enable_threads=yes ;;
esac ], enable_threads=unknown)
AC_ARG_ENABLE(smp-support,
[ --enable-smp-support enable smp support
--disable-smp-support disable smp support],
[ case "$enableval" in
no) enable_smp_support=no ;;
*) enable_smp_support=yes ;;
esac ], enable_smp_support=unknown)
AC_ARG_WITH(termcap,
[ --with-termcap use termcap (default)
--without-termcap do not use any termcap libraries (ncurses,curses,termcap,termlib)],
[],
[with_termcap=yes])
AC_ARG_ENABLE(hybrid-heap,
[ --enable-hybrid-heap enable hybrid heap
--disable-hybrid-heap disable hybrid heap],
[ case "$enableval" in
no) enable_hybrid_heap=no ;;
*) enable_hybrid_heap=yes ;;
esac ], enable_hybrid_heap=unknown)
AC_ARG_ENABLE(lock-checking,
[ --enable-lock-checking enable lock checking],
[ case "$enableval" in
no) enable_lock_check=no ;;
*) enable_lock_check=yes ;;
esac
],
enable_lock_check=no)
AC_ARG_ENABLE(lock-counter,
[ --enable-lock-counter enable lock counters
--disable-lock-counter disable lock counters],
[ case "$enableval" in
no) enable_lock_count=no ;;
*) enable_lock_count=yes ;;
esac ], enable_lock_count=no)
AC_ARG_ENABLE(kernel-poll,
[ --enable-kernel-poll enable kernel poll support
--disable-kernel-poll disable kernel poll support],
[ case "$enableval" in
no) enable_kernel_poll=no ;;
*) enable_kernel_poll=yes ;;
esac ], enable_kernel_poll=unknown)
AC_ARG_ENABLE(sctp,
[ --enable-sctp enable sctp support
--disable-sctp disable sctp support],
[ case "$enableval" in
no) enable_sctp=no ;;
*) enable_sctp=yes ;;
esac ], enable_sctp=unknown)
AC_ARG_ENABLE(hipe,
[ --enable-hipe enable hipe support
--disable-hipe disable hipe support])
AC_ARG_ENABLE(native-libs,
[ --enable-native-libs compile Erlang libraries to native code])
AC_ARG_ENABLE(tsp,
[ --enable-tsp compile tsp app])
AC_ARG_ENABLE(elib-malloc,
[ --enable-elib-malloc use elib_malloc instead of normal malloc])
AC_ARG_ENABLE(fp-exceptions,
[ --enable-fp-exceptions Use hardware floating point exceptions (default if hipe enabled)],
[ case "$enableval" in
no) enable_fp_exceptions=no ;;
*) enable_fp_exceptions=yes ;;
esac
],enable_fp_exceptions=auto)
AC_ARG_ENABLE(darwin-universal,
[ --enable-darwin-universal build universal binaries on darwin i386],
[ case "$enableval" in
no) enable_darwin_universal=no ;;
*) enable_darwin_univeral=yes ;;
esac
],enable_darwin_universal=no)
AC_ARG_ENABLE(darwin-64bit,
[ --enable-darwin-64bit build 64bit binaries on darwin],
[ case "$enableval" in
no) enable_darwin_64bit=no ;;
*) enable_darwin_64bit=yes ;;
esac
],enable_darwin_64bit=no)
AC_ARG_ENABLE(m64-build,
[ --enable-m64-build build 64bit binaries using the -m64 flag to (g)cc],
[ case "$enableval" in
no) enable_m64_build=no ;;
*) enable_m64_build=yes ;;
esac
],enable_m64_build=no)
AC_ARG_ENABLE(fixalloc,
[ --disable-fixalloc disable the use of fix_alloc])
if test x${enable_fixalloc} = xno ; then
AC_DEFINE(NO_FIX_ALLOC,[],
[Define if you don't want the fix allocator in Erlang])
fi
AC_SUBST(PERFCTR_PATH)
AC_ARG_WITH(perfctr,
[ --with-perfctr=PATH specify location of perfctr include and lib
--without-perfctr don't use perfctr (default)])
if test "x$with_perfctr" = "xno" -o "x$with_perfctr" = "x" ; then
PERFCTR_PATH=
else
if test ! -f "$with_perfctr/usr.lib/libperfctr.a" ; then
AC_MSG_ERROR(Invalid path to option --with-perfctr=PATH)
fi
PERFCTR_PATH="$with_perfctr"
AC_DEFINE(USE_PERFCTR,[1],
[Define to enable hrvtime() on Linux systems with perfctr extension])
fi
AC_ARG_ENABLE(clock-gettime,
[ --enable-clock-gettime Use clock-gettime for time correction],
[ case "$enableval" in
no) clock_gettime_correction=no ;;
*) clock_gettime_correction=yes ;;
esac ], clock_gettime_correction=unknown)
AC_ARG_ENABLE(native-ethr-impls,
[ --enable-native-ethr-impls enable native ethread implementations
--disable-native-ethr-impls disable native ethread implementations],
[ case "$enableval" in
no) disable_native_ethr_impls=yes ;;
*) disable_native_ethr_impls=no ;;
esac ], disable_native_ethr_impls=no)
dnl Defined in libraries/megaco/configure.in but we need it here
dnl also in order to show it to the "top user"
AC_ARG_ENABLE(megaco_flex_scanner_lineno,
[ --disable-megaco-flex-scanner-lineno disable megaco flex scanner lineno])
dnl Magic test for clearcase.
OTP_RELEASE=
if test "${ERLANG_COMMERCIAL_BUILD}" != ""; then
OTP_EXTRA_FLAGS=-DOTP_RELEASE
OTP_RELEASE=yes
else
OTP_EXTRA_FLAGS=
fi
AC_SUBST(OTP_RELEASE)
dnl OK, we might have darwin switches off different kinds, lets
dnl check it all before continuing.
TMPSYS=`uname -s`-`uname -m`
if test X${enable_darwin_universal} = Xyes; then
if test X${enable_darwin_64bit} = Xyes; then
AC_MSG_ERROR([--enable-darwin-universal and --enable-darwin-64bit mutually exclusive])
fi
enable_hipe=no
case $CFLAGS in
*-arch\ ppc*)
;;
*)
CFLAGS="-arch ppc $CFLAGS"
;;
esac
case $CFLAGS in
*-arch\ i386*)
;;
*)
CFLAGS="-arch i386 $CFLAGS"
;;
esac
fi
if test X${enable_darwin_64bit} = Xyes; then
case "$TMPSYS" in
Darwin-i386|Darwin-x86_64)
;;
Darwin*)
AC_MSG_ERROR([--enable-darwin-64bit only supported on x86 hosts])
;;
*)
AC_MSG_ERROR([--enable-darwin-64bit only supported on Darwin])
;;
esac
fi
if test X${enable_darwin_64bit} = Xyes -o X${enable_m64_build} = Xyes; then
enable_hipe=no
case $CFLAGS in
*-m64*)
;;
*)
CFLAGS="-m64 $CFLAGS"
;;
esac
else
case $host_os in
darwin*)
case $CFLAGS in
*-m32*)
;;
*)
CFLAGS="-m32 $CFLAGS"
;;
esac
;;
*)
;;
esac
fi
dnl ----------------------------------------------------------------------
dnl Checks for programs.
dnl ----------------------------------------------------------------------
AC_PROG_CC
AC_SUBST(GCC)
dnl ---------------------------------------------------------------------
dnl Special stuff regarding CFLAGS and details in the environment...
dnl ---------------------------------------------------------------------
dnl NOTE: CPPFLAGS will be included in CFLAGS at the end
case $host_os in
linux*) CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE";;
win32)
# The ethread library requires _WIN32_WINNT of at least 0x0403.
# -D_WIN32_WINNT=* from CPPFLAGS is saved in ETHR_DEFS.
CPPFLAGS="$CPPFLAGS -D_WIN32_WINNT=0x0500 -DWINVER=0x0500"
# _USE_32BIT_TIME_T is needed when using VC++ 2005 (ctime() will fail
# otherwise since we pass it a 32-bit value).
#
# FIXME: Use time_t all the way and remove _USE_32BIT_TIME_T.
AC_MSG_WARN([Reverting to 32-bit time_t])
CPPFLAGS="$CPPFLAGS -D_USE_32BIT_TIME_T"
;;
darwin*)
CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE"
;;
*)
;;
esac
MIXED_CYGWIN=no
AC_MSG_CHECKING(for mixed cygwin and native VC++ environment)
if test "X$host" = "Xwin32" -a "x$GCC" != x"yes"; then
if test -x /usr/bin/cygpath; then
CFLAGS="-O2"
MIXED_CYGWIN=yes
AC_MSG_RESULT([yes])
MIXED_CYGWIN_VC=yes
CPPFLAGS="$CPPFLAGS -DERTS_MIXED_CYGWIN_VC"
else
AC_MSG_RESULT([undeterminable])
AC_MSG_ERROR(Seems to be mixed windows but not with cygwin, cannot handle this!)
fi
else
AC_MSG_RESULT([no])
MIXED_CYGWIN_VC=no
fi
AC_SUBST(MIXED_CYGWIN_VC)
AC_MSG_CHECKING(for mixed cygwin and native MinGW environment)
if test "X$host" = "Xwin32" -a "x$GCC" = x"yes"; then
if test -x /usr/bin/cygpath; then
CFLAGS="-O2"
MIXED_CYGWIN=yes
AC_MSG_RESULT([yes])
MIXED_CYGWIN_MINGW=yes
CPPFLAGS="$CPPFLAGS -DERTS_MIXED_CYGWIN_MINGW"
else
AC_MSG_RESULT([undeterminable])
AC_MSG_ERROR(Seems to be mixed windows but not with cygwin, cannot handle this!)
fi
else
AC_MSG_RESULT([no])
MIXED_CYGWIN_MINGW=no
fi
AC_SUBST(MIXED_CYGWIN_MINGW)
AC_MSG_CHECKING(if we mix cygwin with any native compiler)
if test "X$MIXED_CYGWIN" = "Xyes" ; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
AC_SUBST(MIXED_CYGWIN)
dnl
dnl Flags to the C compiler
dnl
dnl Make sure we find config.h
dnl
extra_flags="-I${ERL_TOP}/erts/$host $OTP_EXTRA_FLAGS"
CFLAGS="$CFLAGS $extra_flags"
DEBUG_CFLAGS="-g $CPPFLAGS $extra_flags"
DEBUG_FLAGS=-g
CFLAG_RUNTIME_LIBRARY_PATH="-Wl,-R"
case $host_os in
darwin*)
CFLAG_RUNTIME_LIBRARY_PATH=
CFLAGS="$CFLAGS -no-cpp-precomp"
;;
win32)
CFLAG_RUNTIME_LIBRARY_PATH=
;;
osf*)
CFLAG_RUNTIME_LIBRARY_PATH="-Wl,-rpath,"
;;
*)
;;
esac
dnl
dnl Use the getconf utility if it exists
dnl to find large file support flags.
dnl
if type getconf >/dev/null 2>&1; then
CFLAGS="$CFLAGS `getconf LFS_CFLAGS 2>/dev/null`"
DEBUG_CFLAGS="$DEBUG_CFLAGS `getconf LFS_CFLAGS 2>/dev/null`"
LDFLAGS="$LDFLAGS `getconf LFS_LDFLAGS 2>/dev/null`"
LIBS="$LIBS `getconf LFS_LIBS 2>/dev/null`"
fi
if test "x$GCC" = xyes; then
# until the emulator can handle this, I suggest we turn it off!
#WFLAGS="-Wall -Wshadow -Wcast-qual -Wmissing-declarations"
WFLAGS="-Wall -Wstrict-prototypes -Wmissing-prototypes"
saved_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -Wdeclaration-after-statement"
AC_TRY_COMPILE([],[;], warn_decl_after_st=true, warn_decl_after_st=false)
if test "X$warn_decl_after_st" = "Xtrue"; then
WFLAGS="$WFLAGS -Wdeclaration-after-statement"
fi
CFLAGS=$saved_CFLAGS
else
WFLAGS=""
fi
dnl DEBUG_FLAGS is obsolete (I hope)
AC_SUBST(DEBUG_FLAGS)
AC_SUBST(DEBUG_CFLAGS)
AC_SUBST(WFLAGS)
AC_SUBST(CFLAG_RUNTIME_LIBRARY_PATH)
AC_CHECK_SIZEOF(void *) # Needed for ARCH and smp checks below
dnl
dnl Figure out operating system and cpu architecture
dnl
if test "x$host_alias" != "x"; then
chk_opsys_=$host_os
else
chk_opsys_=`uname -s`
if test "x$chk_opsys_" = "xSunOS"; then
chk_opsys_=$chk_opsys_`uname -r`
fi
fi
case $chk_opsys_ in
win32) OPSYS=win32;;
solaris2.*|SunOS5.*) OPSYS=sol2;;
linux|Linux) OPSYS=linux;;
darwin|Darwin) OPSYS=darwin;;
freebsd|FreeBSD) OPSYS=freebsd;;
*) OPSYS=noopsys
esac
if test "x$host_alias" != "x" -a "x$host_cpu" != "x"; then
chk_arch_=$host_cpu
else
chk_arch_=`uname -m`
fi
case $chk_arch_ in
sun4u) ARCH=ultrasparc;;
sparc64) ARCH=sparc64;;
sun4v) ARCH=ultrasparc;;
i86pc) ARCH=x86;;
i386) ARCH=x86;;
i486) ARCH=x86;;
i586) ARCH=x86;;
i686) ARCH=x86;;
x86_64) ARCH=amd64;;
amd64) ARCH=amd64;;
macppc) ARCH=ppc;;
ppc) ARCH=ppc;;
ppc64) ARCH=ppc64;;
"Power Macintosh") ARCH=ppc;;
armv5b) ARCH=arm;;
armv5teb) ARCH=arm;;
armv5tel) ARCH=arm;;
tile) ARCH=tile;;
*) ARCH=noarch;;
esac
dnl
dnl Convert between x86 and amd64 based on the compiler's mode.
dnl Ditto between ultrasparc and sparc64.
dnl
AC_MSG_CHECKING(whether compilation mode forces ARCH adjustment)
case "$ARCH-$ac_cv_sizeof_void_p" in
i386-8)
AC_MSG_RESULT(yes: adjusting ARCH=x86 to ARCH=amd64)
ARCH=amd64
;;
x86-8)
AC_MSG_RESULT(yes: adjusting ARCH=x86 to ARCH=amd64)
ARCH=amd64
;;
amd64-4)
AC_MSG_RESULT(yes: adjusting ARCH=amd64 to ARCH=x86)
ARCH=x86
;;
ultrasparc-8)
AC_MSG_RESULT(yes: adjusting ARCH=ultrasparc to ARCH=sparc64)
ARCH=sparc64
;;
sparc64-4)
AC_MSG_RESULT(yes: adjusting ARCH=sparc64 to ARCH=ultrasparc)
ARCH=ultrasparc
;;
ppc64-4)
AC_MSG_RESULT(yes: adjusting ARCH=ppc64 to ARCH=ppc)
ARCH=ppc
;;
*)
AC_MSG_RESULT(no)
;;
esac
AC_SUBST(OPSYS)
AC_SUBST(ARCH)
dnl Check consistency of os and darwin-switches
dnl Take care of LDFLAGS on darwin, and disable common_test as it
dnl has a build/configure system re rx-lib that is not compatible
dnl First remove common_tests skip file.
dnl Adjust LDFLAGS to allow 64bit linkage on DARWIN
case $ARCH-$OPSYS in
amd64-darwin*)
AC_MSG_NOTICE([Adjusting LDFLAGS to cope with 64bit Darwin])
case $LDFLAGS in
*-m64*)
;;
*)
LDFLAGS="-m64 $LDFLAGS"
;;
esac
;;
*-darwin*)
if test X${enable_darwin_universal} = Xyes; then
AC_MSG_NOTICE([Adjusting LDFLAGS for universal binaries])
case $LDFLAGS in
*-arch\ ppc*)
;;
*)
LDFLAGS="-arch ppc $LDFLAGS"
;;
esac
case $LDFLAGS in
*-arch\ i386*)
;;
*)
LDFLAGS="-arch i386 $LDFLAGS"
;;
esac
else
case $LDFLAGS in
*-m32*)
;;
*)
LDFLAGS="-m32 $LDFLAGS"
;;
esac
fi
;;
*)
if test X${enable_m64_build} = Xyes; then
AC_MSG_NOTICE([Adjusting LDFLAGS to use -m64])
case $LDFLAGS in
*-m64*)
;;
*)
LDFLAGS="-m64 $LDFLAGS"
;;
esac
fi
;;
esac
AC_MSG_CHECKING(if VM has to be linked with Carbon framework)
case $ARCH-$OPSYS in
amd64-darwin*)
LIBCARBON=
AC_MSG_RESULT([no])
;;
*-darwin*)
LIBCARBON="-framework Carbon "
AC_MSG_RESULT([yes])
;;
*)
LIBCARBON=
AC_MSG_RESULT([no])
;;
esac
AC_SUBST(LIBCARBON)
dnl some tests below will call this if we haven't already - and autoconf
dnl can't handle those tests being done conditionally at runtime
AC_PROG_CPP
AC_PROG_RANLIB
AC_PROG_YACC
LM_PROG_PERL5
if test "$ac_cv_path_PERL" = false; then
AC_MSG_ERROR([Perl version 5 is required to build the emulator!])
fi
AC_PROG_LN_S
AC_CHECK_PROG(AR, ar, ar, false)
if test "$ac_cv_prog_AR" = false; then
AC_MSG_ERROR([No 'ar' command found in PATH])
fi
_search_path=/bin:/usr/bin:/usr/local/bin:$PATH
AC_PATH_PROG(RM, rm, false, $_search_path)
if test "$ac_cv_path_RM" = false; then
AC_MSG_ERROR([No 'rm' command found])
fi
AC_PATH_PROG(MKDIR, mkdir, false, $_search_path)
if test "$ac_cv_path_MKDIR" = false; then
AC_MSG_ERROR([No 'mkdir' command found])
fi
_search_path=
#
# Get programs needed for building the documentation
#
## Delete previous failed configure results
if test -f doc/CONF_INFO; then
rm doc/CONF_INFO
fi
AC_CHECK_PROGS(XSLTPROC, xsltproc)
if test -z "$XSLTPROC"; then
echo "xsltproc" >> doc/CONF_INFO
AC_MSG_WARN([No 'xsltproc' command found: the documentation can not be built])
fi
AC_CHECK_PROGS(FOP, fop)
if test -z "$FOP"; then
echo "fop" >> doc/CONF_INFO
AC_MSG_WARN([No 'fop' command found: the documentation can not be built])
fi
dnl
dnl We can live with Solaris /usr/ucb/install
dnl
case $host in
*-*-solaris*|free_source)
if test -x /usr/ucb/install; then
INSTALL="/usr/ucb/install -c"
fi
;;
*)
;;
esac
AC_PROG_INSTALL
LM_PROG_INSTALL_DIR
case $host_os in
darwin*)
dnl Need to preserve modification time on archives;
dnl otherwise, ranlib has to be run on archives
dnl again after installation.
INSTALL_DATA="$INSTALL_DATA -p";;
*)
;;
esac
dnl
dnl Fix for Tilera install permissions
dnl
case $build in
*tile*)
INSTALL_PROGRAM="$INSTALL_PROGRAM -m755"
INSTALL_SCRIPT="$INSTALL_SCRIPT -m755"
;;
*)
;;
esac
dnl ----------------------------------------------------------------------
dnl Misc. things (some of them should go away)
dnl ----------------------------------------------------------------------
dnl
dnl An attempt to allow cross compiling. This is not the right way,
dnl nor does it work currently. Some makefiles still needs these
dnl variables, so we leave them in for now.
dnl
HCC='$(CC)' AC_SUBST(HCC)
HCFLAGS="" AC_SUBST(HCFLAGS)
HCFLAGS="$HCFLAGS -I${ERL_TOP}/erts/$host"
vxworks_reclaim="" AC_SUBST(vxworks_reclaim)
dnl We want to use $(CC) as linker for the emulator regardless of
dnl what the user say. This might not be the right way to do it, but
dnl for now that is the way we do it.
USER_LD=$LD
USER_LDFLAGS="$LDFLAGS"
LD='$(CC)'
AC_SUBST(LD)
LDFLAG_RUNTIME_LIBRARY_PATH="$CFLAG_RUNTIME_LIBRARY_PATH"
AC_SUBST(LDFLAG_RUNTIME_LIBRARY_PATH)
dnl Check for cygwin and object/exe files extension
dnl AC_CYGWIN is deprecated
AC_EXEEXT
AC_OBJEXT
dnl This is the os flavour, should be unix, vxworks or win32
if test "X$host" = "Xwin32"; then
ERLANG_OSTYPE=win32
else
ERLANG_OSTYPE=unix
fi
AC_SUBST(ERLANG_OSTYPE)
dnl Which sysv4 would this be, and what is it for???
dnl XXX: replace with feature tests.
case $host_os in
sysv4*)
AC_DEFINE(SOCKOPT_CONNECT_STAT,[],[Obscure SYSV feature])
AC_DEFINE(NO_PRAGMA_WEAK,[],[Obscure SYSV feature])
LIBS="$LIBS -lgen -lc -L /usr/ucblib -lucb"
;;
esac
# Check how to export functions from the emulator executable, needed
# when dynamically loaded drivers are loaded (so that they can find
# emulator functions).
# OS'es with ELF executables using the GNU linker (Linux and recent *BSD,
# in rare cases Solaris) typically need '-Wl,-export-dynamic' (i.e. pass
# -export-dynamic to the linker - also known as -rdynamic and some other
# variants); some sysVr4 system(s) instead need(s) '-Wl,-Bexport'.
# AIX 4.x (perhaps only for x>=2) wants -Wl,-bexpall,-brtl and doesn't
# reliably return an error for others, thus we separate it out.
# Otherwise we assume that if the linker accepts the flag, it is needed.
AC_MSG_CHECKING(for extra flags needed to export symbols)
DEXPORT=""
case $host_os in
aix4*)
DEXPORT=-Wl,-bexpall,-brtl
;;
bsdi*)
DEXPORT="-rdynamic "
;;
win32)
DEXPORT=""
;;
*)
save_ldflags="$LDFLAGS"
LDFLAGS=-Wl,-export-dynamic
AC_TRY_LINK(,,[DEXPORT=-Wl,-export-dynamic], [
LDFLAGS=-Wl,-Bexport
AC_TRY_LINK(,,[DEXPORT=-Wl,-Bexport],
AC_MSG_RESULT(none))])
LDFLAGS="$save_ldflags"
;;
esac
AC_SUBST(DEXPORT)
case "x$DEXPORT" in
"x")
AC_MSG_RESULT([none]);;
*)
AC_MSG_RESULT([$DEXPORT]);;
esac
# Check for Solaris/ultrasparc /dev/perfmon interface
# (also needs gcc specific asm instructions)
case "${host}:${GCC}" in
sparc-*-solaris*:yes)
AC_DEFINE(HAVE_SOLARIS_SPARC_PERFMON,[1],
[define if you have the Solaris/ultrasparc /dev/perfmon interface])
;;
*)
;;
esac
dnl ----------------------------------------------------------------------
dnl Checks for libraries.
dnl ----------------------------------------------------------------------
AC_CHECK_LIB(m, sin)
AC_CHECK_LIB(dl, dlopen)
AC_CHECK_LIB(inet, main)
AC_CHECK_LIB(util, openpty)
dnl Try to find a thread library.
dnl
dnl ETHR_LIB_NAME, ETHR_LIBS, ETHR_X_LIBS, ETHR_THR_LIB_BASE and ETHR_DEFS
dnl are set by ERL_FIND_ETHR_LIB
ERL_FIND_ETHR_LIB
if test "X$ETHR_LIB_NAME" = "X"; then
found_threads=no
else
found_threads=yes
fi
ERTS_BUILD_SMP_EMU=$enable_smp_support
AC_MSG_CHECKING(whether an emulator with smp support should be built)
case $ERTS_BUILD_SMP_EMU in
yes)
AC_MSG_RESULT(yes; enabled by user)
;;
no)
AC_MSG_RESULT(no; disabled by user)
;;
unknown)
AC_TRY_COMPILE([],[
#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)
;
#else
#error old or no gcc
#endif
],
gcc_smp=okgcc,
gcc_smp=oldornogcc)
ERTS_BUILD_SMP_EMU=yes
case "$enable_threads-$gcc_smp-$found_threads-$host_os" in
no-*)
AC_MSG_RESULT(no; threads disabled by user)
ERTS_BUILD_SMP_EMU=no
;;
*-okgcc-yes-*)
AC_MSG_RESULT(yes)
ERTS_BUILD_SMP_EMU=yes
;;
*-win32)
AC_MSG_RESULT(yes)
ERTS_BUILD_SMP_EMU=yes
;;
*-oldornogcc-*)
AC_MSG_RESULT(no; old gcc or no gcc found)
ERTS_BUILD_SMP_EMU=no
;;
*)
AC_MSG_RESULT(no)
ERTS_BUILD_SMP_EMU=no
;;
esac
;;
esac
if test $ERTS_BUILD_SMP_EMU = yes; then
if test $found_threads = no; then
AC_MSG_ERROR([cannot build smp enabled emulator since no thread library was found])
fi
AC_DEFINE(ERTS_HAVE_SMP_EMU, 1, [Define if the smp emulator is built])
enable_threads=force
fi
AC_SUBST(ERTS_BUILD_SMP_EMU)
#
# Figure out if the emulator should use threads. The default is set above
# in the enable_threads variable. It can have the following values:
#
# no single-threaded emulator requested
# yes multi-threaded emulator requested
# force multi-threaded emulator required
#
# EMU_THR_LIB_NAME, EMU_THR_LIBS, EMU_THR_X_LIBS, and EMU_THR_DEFS is
# used by the emulator, and can (but should not) be used by applications
# that only require thread support when the emulator has thread support.
# Other applications should use ETHR_LIB_NAME, ETHR_LIBS, ETHR_X_LIBS,
# and ETHR_DEFS.
#
AC_MSG_CHECKING(whether the emulator should use threads)
EMU_THR_LIB_NAME=
EMU_THR_X_LIBS=
EMU_THR_LIBS=
EMU_THR_DEFS=
emu_threads=no
case "$enable_threads"-"$host_os" in
*-win32)
# The windows erlang emulator can never run without threads.
# It has to be enabled or the emulator will crash. Until that
# is fixed we force threads on win32.
enable_threads=force ;;
yes-osf*)
# The emulator hang when threads are enabled on osf
AC_MSG_ERROR(unresolved problems exist with threads on this platform) ;;
*) ;;
esac
case "$enable_threads"-"$found_threads" in
force-yes)
emu_threads=yes
AC_MSG_RESULT(yes; thread support required and therefore forced) ;;
yes-yes)
emu_threads=yes
AC_MSG_RESULT(yes; enabled by user) ;;
unknown-yes)
case $host_os in
solaris*|linux*|darwin*|win32)
emu_threads=yes
AC_MSG_RESULT(yes; default on this platform)
;;
*)
AC_MSG_RESULT(no; default on this platform)
;;
esac
;;
no-yes)
AC_MSG_RESULT(no; thread support found but disabled by user) ;;
unknown-no|no-no)
AC_MSG_RESULT(no) ;;
force-no)
AC_MSG_ERROR(thread support required but not found) ;;
yes-no)
AC_MSG_ERROR(thread support enabled by user but not found) ;;
*)
AC_MSG_ERROR(internal error) ;;
esac
if test $emu_threads != yes; then
enable_lock_check=no
enable_lock_count=no
else
# Threads enabled for emulator