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configure.ac
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# configure.ac -- Process this file with autoconf to produce configure
#
# An autoconf script to automatically configure ULib.
#
# Process this file with autoconf to produce a configure script.
#
# The autoconf documentation states that this is the recommended sequence for this file:
#
# AC_INIT
#
# checks for programs
# checks for libraries
# checks for header files
# checks for typedefs
# checks for structures
# checks for variables
# checks for compiler characteristics
# checks for library functions
# checks for system services
#
# AC_CONFIG_FILES([FILE...])
# SECTION 1: AC_INIT
#
# This macro must be the very first invoked
AC_PREREQ([2.69])
AC_INIT([ULib],[1.4.2],[stefano.casazza@gmail.com],[ULib],[http://stefanocasazza.github.io/ULib/])
AC_CONFIG_SRCDIR([src/ulib/string.cpp])
AC_CONFIG_MACRO_DIR([m4])
# Define a msg macro
define(TWOCAN_CONF_MSG,[
AC_MSG_RESULT()
AC_MSG_RESULT(${T_MD}$1:${T_ME})
])
# Scary shtool stuff... borowed from pth-1.0
if test ".`echo dummy $@ | grep help`" = .; then
ac_shtool="$srcdir/shtool"
PLATFORM=`$ac_shtool platform`
T_MD="`$ac_shtool echo -n -e %B 2>/dev/null`"
T_ME="`$ac_shtool echo -n -e %b 2>/dev/null`"
echo "Platform: ${T_MD}${PLATFORM}${T_ME}"
echo "Configuring ${T_MD}ULib${T_ME} (C++ Library)"
fi
TWOCAN_CONF_MSG(Initial phase)
AC_CANONICAL_TARGET
# Pick a newer and better tar implementation like tar-pax
AM_INIT_AUTOMAKE([subdir-objects no-define tar-pax])
AM_MAINTAINER_MODE
AM_SILENT_RULES([yes])
AC_USE_SYSTEM_EXTENSIONS
dnl This is a C++ library after all
AC_LANG([C++])
dnl Initial CXX, CFLAGS, CXXFLAGS, CPPFLAGS, LDFLAGS, LIBS
AC_MSG_CHECKING(initial CXX)
AC_MSG_RESULT($CXX)
AC_MSG_CHECKING(initial CFLAGS)
AC_MSG_RESULT($CFLAGS)
AC_MSG_CHECKING(initial CXXFLAGS)
AC_MSG_RESULT($CXXFLAGS)
AC_MSG_CHECKING(initial CPPFLAGS)
AC_MSG_RESULT($CPPFLAGS)
AC_MSG_CHECKING(initial LDFLAGS)
AC_MSG_RESULT($LDFLAGS)
AC_MSG_CHECKING(initial LIBS)
AC_MSG_RESULT($LIBS)
m4_include([m4/m4_ax_python_devel.m4])
# Generate a header file with all settings, a config.h file (Automake will add -DHAVE_CONFIG_H)
AC_CONFIG_HEADERS([include/ulib/internal/config.h])
AC_CANONICAL_HOST
# Check what platform we are running on
AC_MSG_CHECKING([which platform we are running on])
local_os_type="unknown"
is_librt_available="yes"
LDFLAGS="$LDFLAGS -L/usr/local/lib"
CXXFLAGS="$CXXFLAGS -I/usr/local/include"
case "$host" in
*-sco*) AC_MSG_ERROR([We do not support SCO's products!]) ;;
*-aix*) local_os_type="aix" ;;
*-osf*) local_os_type="osf" ;;
*-irix*) local_os_type="irix" ;;
*-hpux*) local_os_type="hpux" ;;
*-linux*) local_os_type="linux" ;;
*-cygwin*) local_os_type="cygwin" ;;
*-darwin*)
local_os_type="darwin"
is_librt_available="no"
;;
*-netbsd*)
local_os_type="netbsd"
LDFLAGS="$LDFLAGS -L/usr/local/v6/lib"
;;
*-openbsd*)
local_os_type="openbsd"
LIBS="L/usr/local/lib $LIBS"
;;
*mingw*)
local_os_type="mingw"
is_librt_available="no"
CPPFLAGS="$CPPFLAGS -I/mingw/include -L/mingw/lib -D__USE_MINGW_ANSI_STDIO=1"
CXXFLAGS="$CXXFLAGS -I/mingw/include -L/mingw/lib"
LDFLAGS="$LDFLAGS -L/mingw/lib"
;;
*-sunos*)
local_os_type="sunos"
CXXFLAGS="$CXXFLAGS -pthreads"
LDFLAGS="$LDFLAGS -lsocket -lnsl -lresolv"
;;
*-solaris*)
local_os_type="solaris"
CXXFLAGS="$CXXFLAGS -pthreads"
LDFLAGS="$LDFLAGS -lsocket -lnsl"
;;
*-freebsd*)
local_os_type="freebsd"
CXXFLAGS="$CXXFLAGS -pthread"
LDFLAGS="$LDFLAGS -L/usr/local/v6/lib"
;;
*) local_os_type=unknown ;;
esac
AS_IF([test "x$local_os_type" = xunknown], [AC_MSG_RESULT([unknown])], [test "x$local_os_type" != xunknown], [AC_MSG_RESULT([$local_os_type])])
# Check for architecture for the target
AC_MSG_CHECKING([which architecture the target is])
TARGET_ARCH=
case $target in
x86_64*) TARGET_ARCH=x86_64 ;;
i*86) TARGET_ARCH=i386 ;;
sh*) TARGET_ARCH=sh ;;
mips*) TARGET_ARCH=mips ;;
or1k*) TARGET_ARCH=openrisc ;;
microblaze) TARGET_ARCH=microblaze ;;
powerpc*|ppc*) TARGET_ARCH=powerpc ;;
*netbsd*) TARGET_ARCH=NetBSD
enable_stdcpp="yes" ;;
arm*) TARGET_ARCH=arm
AC_DEFINE([HAVE_NO_UNALIGNED_ACCESSES], 1, [Define to 1 if the target don't allows unaligned reads and write]) ;;
aarch64*) TARGET_ARCH=arm64
AC_DEFINE([HAVE_NO_UNALIGNED_ACCESSES], 1, [Define to 1 if the target don't allows unaligned reads and write]) ;;
*) TARGET_ARCH=unknown ;;
esac
#AC_SUBST(TARGET_ARCH)
AS_IF([test "x$TARGET_ARCH" = xunknown], [AC_MSG_RESULT([unknown])], [test "x$TARGET_ARCH" != xunknown], [AC_MSG_RESULT([$TARGET_ARCH])])
# Check for Operating system and libc to use in $target
AC_MSG_CHECKING([which operating system the target is])
OPERATINGSYSTEM=
TARGET_LIBC=
case $target in
*-*-linux-*) OPERATINGSYSTEM=linux ;;
*netbsd*) OPERATINGSYSTEM=NetBSD ;;
*-none-*) OPERATINGSYSTEM=baremetal ;;
*) OPERATINGSYSTEM=unknown ;;
esac
#AC_SUBST(OPERATINGSYSTEM)
AS_IF([test "x$OPERATINGSYSTEM" = xunknown], [AC_MSG_RESULT([unknown])], [test "x$OPERATINGSYSTEM" != xunknown], [AC_MSG_RESULT([$OPERATINGSYSTEM])])
AC_MSG_CHECKING([which libc is detected for the target])
if test "x$OPERATINGSYSTEM" = xlinux ; then
case $target in
*-*-linux-gnu*) TARGET_LIBC=glibc ;;
*-*-linux-musl*) TARGET_LIBC=musl ;;
*-*-linux-uclibc*) TARGET_LIBC=uclibc ;;
*) TARGET_LIBC=unknown ;;
esac
else
case $target in
*netbsd*) TARGET_LIBC=libc ;;
*) TARGET_LIBC=unknown ;;
esac
fi
#AC_SUBST(TARGET_LIBC)
AS_IF([test "x$TARGET_LIBC" = xunknown], [AC_MSG_RESULT([unknown])], [test "x$TARGET_LIBC" != xunknown], [AC_MSG_RESULT([$TARGET_LIBC])])
# check for cross compiling
if test "$cross_compiling" != "yes"; then
AM_CONDITIONAL(CROSS_COMPILING, false)
AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
if test "X$PKG_CONFIG" != "X"; then
PKG_CONFIG_PATH=`pkg-config --variable pc_path pkg-config`
fi
else
AM_CONDITIONAL(CROSS_COMPILING, true)
PKG_CONFIG_PATH=${STAGING_DIR}/usr/lib/pkgconfig
TWOCAN_CONF_MSG(Build for Target <${target}> with Environment <${STAGING_DIR}>)
if test "x$STAGING_DIR" != "x" ; then
CROSS_ENVIRONMENT=$STAGING_DIR
fi
AC_DEFINE([CROSS_COMPILE],[1],[Define if we are cross compiling])
fi
# checks for programs
TWOCAN_CONF_MSG(Checking for programs)
AC_PROG_CXX
AC_PROG_AWK
AC_PROG_CC
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MAKE_SET
AC_C_RESTRICT
AC_C_VOLATILE
AC_C_INLINE
# clang is mostly GCC-compatible, but its version is much lower, so we have to check for it
AC_MSG_CHECKING([if compiling with Intel C++])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
#ifndef __INTEL_COMPILER
not intel
#endif
]])],
[GCC_IS_INTEL=yes], [GCC_IS_INTEL=no])
AC_MSG_RESULT([$GCC_IS_INTEL])
#AC_SUBST(GCC_IS_INTEL)
AM_CONDITIONAL(INTEL, false)
if test "$GCC_IS_INTEL" = "yes"; then
AM_CONDITIONAL(INTEL, true)
gcc_version=`icc -dumpversion`
fi
AC_MSG_CHECKING([if compiling with clang])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [[
#ifndef __clang__
not clang
#endif
]])],
[GCC_IS_CLANG=yes], [GCC_IS_CLANG=no])
AC_MSG_RESULT([$GCC_IS_CLANG])
#AC_SUBST(GCC_IS_CLANG)
AM_CONDITIONAL(CLANG, false)
if test "$GCC_IS_CLANG" = "yes"; then
AM_CONDITIONAL(CLANG, true)
gcc_version=`clang -dumpversion`
fi
ULIB_LIBS=
MODULE_LIBTOOL_OPTIONS="-shared -export-dynamic -avoid-version"
os_version=`uname -a`
AC_DEFINE_UNQUOTED(_OS_VERSION, "$os_version", [Operating System version])
AC_MSG_CHECKING([for a supported OS])
case "$target_os" in
*linux*)
AC_MSG_RESULT([ok ($target_os)])
# Ok, this is linux. Check the kernel version
AC_MSG_CHECKING([for the kernel version])
kernel=`uname -r`
case "$kernel" in
6.*)
AC_MSG_RESULT([5 family ($kernel)])
# AC_DEFINE([KERNEL_6], 1, [Define to 1 if you're using Linux 6.x])
;;
5.*)
AC_MSG_RESULT([5 family ($kernel)])
# AC_DEFINE([KERNEL_5], 1, [Define to 1 if you're using Linux 5.x])
;;
4.*)
AC_MSG_RESULT([4 family ($kernel)])
# AC_DEFINE([KERNEL_4], 1, [Define to 1 if you're using Linux 4.x])
;;
3.*)
AC_MSG_RESULT([3 family ($kernel)])
# AC_DEFINE([KERNEL_3], 1, [Define to 1 if you're using Linux 3.x])
;;
2.6.*)
AC_MSG_RESULT([2.6 family ($kernel)])
# AC_DEFINE([KERNEL_2_6], 1, [Define to 1 if you're using Linux 2.6.x])
;;
2.4.*)
AC_MSG_RESULT([2.4 family ($kernel)])
# AC_DEFINE([KERNEL_2_4], 1, [Define to 1 if you're using Linux 2.4.x])
;;
*)
AC_MSG_RESULT([unsupported ($kernel)])
AC_MSG_ERROR([ULib works on kernels 2.\[4,6\].x,\[3-4\].x.x])
;;
esac
enable_stdcpp="yes"
AM_CONDITIONAL(LINUX, true)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, false)
;;
mingw*)
AC_MSG_RESULT([ok ($target_os)])
enable_stdcpp="no"
CPPFLAGS="$CPPFLAGS -D__USE_CRTIMP -Wno-sign-compare"
if test "$enable_static" = "yes"; then
AC_MSG_WARN([Disabling static library build, must build as DLL on Windows])
enable_static=no
fi
if test "$enable_shared" = "no"; then
AC_MSG_WARN([Enabling shared library build, must build as DLL on Windows])
fi
enable_shared=yes
AC_CHECK_TOOL(WINDRES, windres, no)
if test "$WINDRES" = no; then
AC_MSG_ERROR([*** Could not find an implementation of windres in your PATH])
fi
AC_CHECK_PROG(ms_librarian, lib.exe, yes, no)
# We currently use .def files on Windows
MODULE_LIBTOOL_OPTIONS="-export-dynamic -avoid-version -no-undefined"
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, true)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, false)
;;
cygwin*)
AC_MSG_RESULT([ok ($target_os)])
CPPFLAGS="$CPPFLAGS -U__STRICT_ANSI__" # if not, the functions fdopen, fileno and strptime will not available...
MODULE_LIBTOOL_OPTIONS="-shared -no-undefined"
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, true)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, false)
;;
*netbsd*)
AC_MSG_RESULT([ok ($target_os)])
CPPFLAGS="$CPPFLAGS -fpermissive -Wno-sign-compare"
if test "$target_os" = "netbsd"; then
CPPFLAGS="$CPPFLAGS -D__UNIKERNEL__"
## LDFLAGS="${LDFLAGS} -Wl,--no-as-needed -lrump -Wl,--no-as-needed -lrumpuser"
AC_CHECK_HEADERS([rump/rump.h],, AC_MSG_ERROR([rump kernel required]))
else
ULIB_LIBS="$ULIB_LIBS -lexecinfo"
# Disable -ffunction-sections -fdata-sections and accompanying --gc-sections on netbsd because --gc-sections doesn't work with the netbsd-4 and netbsd-5 linker
LDFLAGS="${LDFLAGS} -Wl,--no-gc-sections"
fi
MODULE_LIBTOOL_OPTIONS="-shared -avoid-version -no-undefined"
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, true)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, false)
;;
*solaris*)
AC_MSG_RESULT([ok ($target_os)])
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, true)
;;
darwin*)
AC_MSG_RESULT([maybe ($target_os)])
CPPFLAGS="$CPPFLAGS -D__OSX__ -D__APPLE__ -Wno-deprecated-declarations"
MODULE_LIBTOOL_OPTIONS="-dynamic -bundle -undefined suppress -flat_namespace -read_only_relocs suppress"
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, true)
AM_CONDITIONAL(SOLARIS, false)
;;
osf*)
AC_MSG_RESULT([maybe ($target_os)])
MODULE_LIBTOOL_OPTIONS="-shared -no-undefined"
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, false)
;;
*minix*)
AC_MSG_RESULT([maybe ($target_os)])
enable_stdcpp="no"
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, false)
;;
*)
AC_MSG_RESULT([no ($target_os)])
AM_CONDITIONAL(LINUX, false)
AM_CONDITIONAL(MINGW, false)
AM_CONDITIONAL(CYGWIN, false)
AM_CONDITIONAL(NETBSD, false)
AM_CONDITIONAL(DARWIN, false)
AM_CONDITIONAL(SOLARIS, false)
;;
esac
AM_CONDITIONAL(MS_LIB_AVAILABLE, test x$ms_librarian = xyes)
# Check for the compiler support
gcc_major_4_1="no"
if test "$ac_cv_c_compiler_gnu" = "yes" -a "x$GCC_IS_CLANG" = xno -a "x$GCC_IS_INTEL" = xno; then
# We don't want gcc 2.7
AC_MSG_CHECKING([for a supported version of gcc])
gcc_version=`$CC -dumpversion`
case "$gcc_version" in
1.*|2.7.*|2.8.*)
AC_MSG_RESULT([no ($gcc_version)])
AC_MSG_ERROR([please use a more recent (>= gcc-2.95) version of gcc])
;;
2.95)
enable_stdcpp="no"
AC_MSG_RESULT([ok ($gcc_version)])
;;
3*|4.0*)
AC_MSG_RESULT([ok ($gcc_version)])
;;
4.1*|4.2*|4.3*|4.4*|4.5*|4.6*|4.7*)
AC_MSG_RESULT([ok ($gcc_version)])
gcc_major_4_1="yes"
;;
*)
AC_MSG_RESULT([ok ($gcc_version)])
gcc_major_4_1="yes"
AC_MSG_CHECKING([whether there are the gcc built-in functions to detect run-time CPU type and ISA])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <stdlib.h>]],[[__builtin_cpu_init();if (__builtin_cpu_supports("sse4.2")) return 0; return 1;]])],
[AC_MSG_RESULT([yes]); AC_DEFINE([HAVE_BUILTIN_CPU_INIT],[1],[there are the built-in functions to detect run-time CPU type and ISA])],
[AC_MSG_RESULT([no])])
if test "$cross_compiling" != "yes"; then
AC_MSG_CHECKING([if we have support for crc32 intrinsics])
echo 'void f(){}' >conftest.cpp
if test -z "`$CC -mcrc32 -c conftest.cpp 2>&1`"; then
CPPFLAGS_save=$CPPFLAGS
CPPFLAGS="$CPPFLAGS -mcrc32"
AC_CACHE_VAL(ac_cv_crc32_intrinsics, [
AC_RUN_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>]],[[__builtin_cpu_init();if (__builtin_cpu_supports("sse4.2")) return 0; return 1;]])],
[ac_cv_crc32_intrinsics="yes"], [ac_cv_crc32_intrinsics="no"]) ])
if test "x$ac_cv_crc32_intrinsics" = xyes; then
AC_MSG_RESULT([yes])
AC_DEFINE([USE_HARDWARE_CRC32],[1],[Define if we have support for crc32 intrinsics])
else
AC_MSG_RESULT([no])
CPPFLAGS=$CPPFLAGS_save
fi
fi
fi
;;
esac
fi
# GNUC 4.1.0 and later versions provide built-in functions
# for atomic memory access. see online doc for details at
# http://gcc.gnu.org/onlinedocs/gcc-4.1.0/gcc/Atomic-Builtins.html
if test "$gcc_major_4_1" = "yes"; then
AC_MSG_CHECKING(if you want to enable build of gcc atomic support)
AC_ARG_ENABLE(atomics, [ --enable-atomics enable gcc atomic support [[default=yes]]])
if test -z "$enable_atomics"; then
enable_atomics="yes"
fi
AC_MSG_RESULT([$enable_atomics])
fi
if test "$enable_atomics" = "yes" ; then
AC_DEFINE(HAVE_GCC_ATOMICS, [1], [cannot test in autoconf safely])
fi
# SECTION 2: Configure script command line options
# Shared library versioning
#GENERIC_LIBRARY_VERSION=$PACKAGE_VERSION
# | | |
# +------+ | +---+
# | | |
# current:revision:age
# | | |
# | | +- increment if interfaces have been added
# | | set to zero if interfaces have been removed or changed
# | +- increment if source code has changed
# | set to zero if current is incremented
# +- increment if interfaces have been added, removed or changed
#AC_SUBST(GENERIC_LIBRARY_VERSION)
# ==========================================================================================================
# Updating library version information
# ==========================================================================================================
# If you want to use libtool's versioning system, then you must specify the version information to libtool
# using the -version-info flag during link mode (Note: Link mode)
#
# This flag accepts an argument of the form CURRENT[:REVISION[:AGE]].
# So, passing -version-info 3:12:1 sets CURRENT to 3, REVISION to 12, and AGE to 1
#
# If either REVISION or AGE are omitted, they default to 0. Also note that AGE must be less than or equal to the CURRENT interface number.
#
# Here are a set of rules to help you update your library version information:
#
# 1. Start with version information of 0:0:0 for each libtool library.
#
# 2. Update the version information only immediately before a public
# release of your software. More frequent updates are unnecessary,
# and only guarantee that the current interface number gets larger
# faster.
#
# 3. If the library source code has changed at all since the last
# update, then increment REVISION (C:R:A becomes C:r+1:A).
#
# 4. If any interfaces have been added, removed, or changed since the
# last update, increment CURRENT, and set REVISION to 0.
#
# 5. If any interfaces have been added since the last public release,
# then increment AGE.
#
# 6. If any interfaces have been removed since the last public release,
# then set AGE to 0.
#
# *NEVER* try to set the interface numbers so that they correspond to the release number of your package. This is an abuse that only
# fosters misunderstanding of the purpose of library versions. Instead, use the -release flag (Note: Release numbers), but be warned
# that every release of your package will not be binary compatible with any other release.
# ==========================================================================================================
# By default, this macro turns on shared libraries if they are available, and also enables static libraries
# if they don't conflict with the shared libraries. You can modify these defaults by calling either the
# AC_DISABLE_SHARED or AC_DISABLE_STATIC macros:
dnl Initialize Libtool
m4_ifdef([LT_INIT], [LT_INIT([dlopen shared static win32-dll])], [AC_LIBTOOL_DLOPEN AC_LIBTOOL_WIN32_DLL])
LT_INIT
AC_SUBST(MODULE_LIBTOOL_OPTIONS)
if test "$enable_static" = "yes" -a "$enable_shared" = "no"; then
AM_CONDITIONAL(STATIC_ONLY, true)
AC_DEFINE(U_STATIC_ONLY, [1], [we want only static linking])
if test -z "$enable_stdcpp"; then
enable_stdcpp="no"
fi
else
AM_CONDITIONAL(STATIC_ONLY, false)
fi
AC_MSG_CHECKING([for full c++ support and linking model])
AC_ARG_ENABLE(stdcpp, [ --enable-stdcpp compile with stdc++ runtime overhead [[default=yes]]])
if test -z "$enable_stdcpp"; then
enable_stdcpp="yes"
fi
CXX_save=$CXX
if test "$enable_stdcpp" = "yes"; then
AC_MSG_RESULT(yes)
AM_CONDITIONAL(STDCPP, true)
AC_DEFINE(U_STDCPP_ENABLE, [1], [full c++ support and linking model])
# Be sure to add any -std option to CXXFLAGS before we invoke any AC_COMPILE_IFELSE()
# or similar macros. Any such macros that are invoked before we update CXXFLAGS will
# not be run with the same options that we use during the real build
AX_CXX_COMPILE_STDCXX_11([ext], [optional])
AX_CXX_COMPILE_STDCXX_14([ext], [optional])
else
AC_MSG_RESULT(no)
AM_CONDITIONAL(STDCPP, false)
if test x"$GCC" = "xyes" ; then
lcflags="-nodefaultlibs -nostdinc++"
else
lcflags="-library=no%Cstd -features=no%except -features=no%rtti"
fi
for flag in $lcflags; do
AC_MSG_CHECKING([whether $CXX supports $flag])
echo 'void f(){}' >conftest.cpp
if test -z "`$CXX $flag -c conftest.cpp 2>&1`"; then
ULIB_LIBS="$flag $ULIB_LIBS"
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
rm -f conftest*
done
fi
ULIB="ulib"
ulib_dbg_msg="no (--enable-debug)"
AC_MSG_CHECKING(for debugging)
AC_ARG_ENABLE(debug, [ --enable-debug compile for debugging [[default=no]]])
if test -z "$enable_debug"; then
enable_debug="no"
fi
AM_CONDITIONAL(DEBUG, false)
if test "$enable_debug" = "yes"; then
AC_MSG_RESULT(yes)
AM_CONDITIONAL(DEBUG, true)
AC_DEFINE(DEBUG, [1], [debugging model])
ULIB="ulib_g"
ulib_dbg_msg="enabled"
CPPFLAGS="$CPPFLAGS -DDEBUG"
else
AC_MSG_RESULT(no)
fi
AC_SUBST(ULIB)
AC_MSG_CHECKING(for target that allows unaligned reads and writes)
AC_ARG_ENABLE(unaligned, [ --enable-unaligned compile for target that allows unaligned reads and writes [[default=yes]]])
if test -z "$enable_unaligned"; then
enable_unaligned="yes"
fi
if test "$enable_unaligned" = "yes"; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
AC_DEFINE([HAVE_NO_UNALIGNED_ACCESSES], 1, [Define to 1 if the target don't allows unaligned reads and write])
fi
AC_MSG_CHECKING(for apex memcpy/memmove)
AC_ARG_ENABLE(apexmem, [ --enable-apexmem use apex_memmove written by Trevor Herselman in 2014 [[default=no]]])
if test -z "$enable_apexmem"; then
enable_apexmem="no"
fi
AM_CONDITIONAL(APEXMEM, false)
if test "$enable_apexmem" = "yes"; then
AC_MSG_RESULT(yes)
AM_CONDITIONAL(APEXMEM, true)
AC_DEFINE(U_APEX_ENABLE, [1], [use apex_memmove written by Trevor Herselman in 2014])
else
AC_MSG_RESULT(no)
fi
ULIB_LIBC="-lc"
AC_ARG_WITH(libc,
AS_HELP_STRING([--with-libc=path],[specify path to alternate libc [[default=c]]]),
[ if test x$with_libc != x ; then
clib=`echo $with_libc | sed s/[-]l//`
ULIB_LIBC=-l${clib}
fi ])
clib=`echo $ULIB_LIBC | sed s/[-]l//`
AH_BOTTOM([
#include <ulib/internal/platform.h>
])
TWOCAN_CONF_MSG(Checking for headers)
AC_HEADER_STDC
AC_HEADER_TIME
AC_HEADER_MAJOR
AC_HEADER_DIRENT
AC_HEADER_SYS_WAIT
AC_FUNC_ALLOCA
AC_CHECK_HEADERS([arpa/inet.h asm/mman.h cpuid.h fcntl.h float.h inttypes.h libintl.h limits.h malloc.h netdb.h netinet/in.h stddef.h stdint.h stdlib.h \
string.h sys/ioctl.h sys/param.h sys/socket.h sys/time.h sys/timeb.h sys/resource.h syslog.h termios.h unistd.h wchar.h \
assert.h byteswap.h endian.h execinfo.h ifaddrs.h mcheck.h ndir.h dirent.h ndir.h string.h netpacket/packet.h sched.h \
semaphore.h sysexits.h streambuf.h poll.h net/if_arp.h sys/dir.h sys/endian.h sys/ndir.h sys/inotify.h sys/sendfile.h sys/sched.h \
sys/syscall.h linux/netfilter_ipv4/ipt_ACCOUNT.h libnetfilter_conntrack/libnetfilter_conntrack.h \
/usr/src/linux/include/generated/uapi/linux/version.h])
AC_MSG_CHECKING([whether sys/inotify.h actually works])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[#include <sys/inotify.h>]],[[return (-1 == inotify_init());]])],
[AC_MSG_RESULT([yup]); AC_DEFINE([SYS_INOTIFY_H_EXISTS_AND_WORKS],[1],[sys/inotify.h exists and works correctly])],
[AC_MSG_RESULT([nope, using own inotify headers])])
AM_CONDITIONAL(ASSERT, test "$ac_cv_header_assert_h" = "yes")
if test "$ac_cv_header_sys_inotify_h" = "yes"; then
AC_CHECK_FUNCS([inotify_init1])
fi
socket_lib=""
OPENSSL_LINK=""
threading="none"
AC_CHECK_LIB(msvcrt, fopen, [
threading="msw"
clib="msvcrt"
ULIB_LIBC="-lmingwex -lmingw32 -lcrypt32 -luser32 -lwinmm -lws2_32 -lwsock32 -lmsvcrt -lshell32 -ladvapi32 -lkernel32 -lgcc"
ULIB_LIBS="--enable-stdcall-fixup $ULIB_LIBS"
OPENSSL_LINK="-lgdi32"
AC_DEFINE(HAVE_INET_NTOP, [1], [have inet_ntop])
AC_DEFINE(HAVE_GETADDRINFO, [1], [have getaddrinfo]) ],[
AC_CHECK_LIB($clib, socketpair, [
AC_DEFINE(HAVE_SOCKETPAIR, [1], [have socketpair])
],[
AC_CHECK_LIB(socket, socketpair, [AC_DEFINE(HAVE_SOCKETPAIR, [1], [have socketpair])])
])
AC_CHECK_LIB($clib, getaddrinfo, [
AC_DEFINE(HAVE_GETADDRINFO, [1], [have getaddrinfo])
],[
AC_CHECK_LIB(socket, getaddrinfo, [AC_DEFINE(HAVE_GETADDRINFO, [1], [have getaddrinfo])])
])
AC_CHECK_LIB($clib, gethostbyname2, [
AC_DEFINE(HAVE_GETHOSTBYNAME2, [1], [have gethostbyname2])
],[
AC_CHECK_LIB(socket, gethostbyname2, [AC_DEFINE(HAVE_GETHOSTBYNAME2, [1], [have gethostbyname2])])
])
AC_CHECK_LIB($clib, inet_ntop, [
AC_DEFINE(HAVE_INET_NTOP, [1], [have inet ntop])
],[
AC_CHECK_LIB(socket, inet_ntop, [
AC_DEFINE(HAVE_INET_NTOP, [1], [have inet ntop])
],[
AC_CHECK_LIB(nsl, inet_ntop, [
AC_DEFINE(HAVE_INET_NTOP, [1], [have inet_ntop])
socket_lib="-lnsl"
])
])
])
AC_CHECK_LIB(socket, socket,[
AC_CHECK_LIB(socket, socketpair,[
AC_DEFINE(HAVE_SOCKETPAIR, [1], [have socketpair in libsocket])
])
socket_lib="-lsocket"
])
])
AC_CHECK_LIB($clib, lstat, [
AC_DEFINE(HAVE_LSTAT, [1], [have lstat])
])
AC_CHECK_LIB($clib, strcoll, [
AC_DEFINE(HAVE_STRCOLL, [1], [string collation])
])
AC_CHECK_LIB($clib, stricmp, [
AC_DEFINE(HAVE_STRICMP, [1], [string icmp])
])
AC_CHECK_LIB($clib, stristr, [
AC_DEFINE(HAVE_STRISTR, [1], [string istr])
])
AC_CHECK_LIB($clib, sysconf, [
AC_DEFINE(HAVE_SYSCONF, [1], [system config])
])
##AC_CHECK_LIB($clib, localtime_r, [
## AC_DEFINE(HAVE_LOCALTIME_R, [1], [system localtime_r])
##])
##AC_CHECK_LIB($clib, gmtime_r, [
## AC_DEFINE(HAVE_GMTIME_R, [1], [system gmtime_r])
##])
AC_CHECK_LIB($clib, posix_memalign, [
AC_DEFINE(HAVE_POSIX_MEMALIGN, [1], [posix memory alignment])
])
tlib=""
plib=""
PTHREAD_FLAGS=""
AC_MSG_CHECKING(if you want to enable build of thread support)
AC_ARG_ENABLE(thread, [ --enable-thread enable build of thread support [[default=yes]]])
if test -z "$enable_thread" -a "$enable_shared" = "yes"; then
enable_thread="yes"
fi
AC_MSG_RESULT([$enable_thread])
AC_MSG_CHECKING(if you want to always use GNU pth for threading)
AC_ARG_ENABLE(pth, [ --enable-pth always use GNU pth for threading [[default=no]]])
if test -z "$enable_pth"; then
enable_pth="no"
fi
AC_MSG_RESULT([$enable_pth])
if test "$threading" = "none" ; then
if test "$enable_pth" != "yes" ; then
AC_CHECK_HEADER(pthread.h, [
PTHREAD_FLAGS="-mt -pthread -pthreads"
AC_CHECK_LIB(pthread,pthread_create,[ tlib="pthread" ])
if test -z "$tlib" ; then
AC_CHECK_LIB($clib, pthread_create, [tlib="$clib"])
fi
if test -z "$tlib" ; then
AC_CHECK_LIB(c_r, pthread_create, [
tlib="c_r"
if test "$clib" = "c" ; then
AC_CHECK_LIB(c_r, malloc, [clib="c_r"])
fi
])
fi
if test ! -z "$tlib" ; then
AC_CHECK_LIB($tlib,pthread_suspend,[
AC_DEFINE(HAVE_PTHREAD_SUSPEND, [1], [pthread suspend])
])
AC_CHECK_LIB($tlib,pthread_cancel,[
AC_DEFINE(HAVE_PTHREAD_CANCEL, [1], [pthread cancel])
])
AC_CHECK_LIB($tlib,pthread_condattr_setclock,[
AC_DEFINE(HAVE_PTHREAD_CONDATTR_SETCLOCK, [1], [pthread clocking])
])
AC_CHECK_LIB($tlib,pthread_setconcurrency,[
AC_DEFINE(HAVE_PTHREAD_SETCONCURRENCY, [1], [pthread concurrency])
])
AC_CHECK_LIB($tlib,pthread_yield,[
AC_DEFINE(HAVE_PTHREAD_YIELD, [1], [pthread yield],[
AC_CHECK_LIB($tlib,pthread_yield_np,[
AC_DEFINE(HAVE_PTHREAD_YIELD_NP, [1], [pthread yield np])
])
])
])
AC_CHECK_LIB($tlib,pthread_delay,[
AC_DEFINE(HAVE_PTHREAD_DELAY, [1], [pthread delay])
])
AC_CHECK_LIB($tlib,pthread_delay_np,[
AC_DEFINE(HAVE_PTHREAD_DELAY_NP, [1], [pthread delay np])
])
AC_CHECK_LIB($tlib,pthread_setschedprio,[
AC_DEFINE(HAVE_PTHREAD_SETSCHEDPRIO, [1], [pthread scheduling])
])
# Missing from Android's pthread implementation but the default
# values for newly created threads corresponds to the one we set
AC_CHECK_LIB($tlib,pthread_attr_setinheritsched,[
AC_DEFINE(HAVE_PTHREAD_ATTR_SETINHRITSCHED, [1], [pthread inherit scheduling attribute])
])
fi
],[
AC_CHECK_HEADER(windows.h,, [
AC_CHECK_HEADER(pth.h,[
plib="-lpth"
CPPFLAGS="$CPPFLAGS -D__PTH__"
],[
AC_MSG_ERROR("pthread or GNU pth support required")
])
])
])
else
AC_CHECK_HEADER(pth.h,[
plib="-lpth"
CPPFLAGS="$CPPFLAGS -D__PTH__"
],[
AC_MSG_ERROR("GNU pth required")
])
fi
fi
if test ! -z "$tlib"; then
plib="$plib -l$tlib"
fi
AM_CONDITIONAL(PREAD, false)
AM_CONDITIONAL(DAEMON, false)
AM_CONDITIONAL(TIMEGM, false)
AM_CONDITIONAL(MREMAP, false)
AM_CONDITIONAL(MEMMEM, false)
AM_CONDITIONAL(PTHREAD, false)
AM_CONDITIONAL(MEMRCHR, false)
AM_CONDITIONAL(STRNDUP, false)
AM_CONDITIONAL(MKDTEMP, false)
AM_CONDITIONAL(FNMATCH, false)
AM_CONDITIONAL(STRPTIME, false)
AM_CONDITIONAL(GMTIME_R, false)
AM_CONDITIONAL(SENDFILE, false)
AM_CONDITIONAL(NANOSLEEP, false)
AM_CONDITIONAL(SEMAPHORE, false)
AM_CONDITIONAL(FALLOCATE, false)
AM_CONDITIONAL(FALLOCATE64, false)
AM_CONDITIONAL(GETOPT_LONG, false)
AM_CONDITIONAL(SCHED_GETCPU, false)
AM_CONDITIONAL(SEM_TIMEDWAIT, false)
if test "$enable_thread" != "yes"; then
ulib_thread_msg="no (--enable-thread)"
else
ulib_thread_msg="enabled"
AM_CONDITIONAL(PTHREAD, true)
AC_DEFINE(ENABLE_THREAD, [1], [Define if enable thread support])
if test ! -z "$PTHREAD_FLAGS"; then
for flag in $PTHREAD_FLAGS ; do
AC_MSG_CHECKING([whether $CXX supports $flag])
echo 'void f(){}' >conftest.cpp
if test -z "`$CXX $flag -c conftest.cpp 2>&1`"; then
AC_MSG_RESULT(yes)
CPPFLAGS="$CPPFLAGS $flag"
break
else
AC_MSG_RESULT(no)
fi
done
fi
AC_CHECK_LIB(numa,numa_max_node)
if test "$ac_cv_lib_numa_numa_max_node" = "yes"; then
plib="$plib -lnuma"
fi
fi
TWOCAN_CONF_MSG(Checking for functions)
AC_FUNC_CHOWN
AC_FUNC_ERROR_AT_LINE
AC_FUNC_FORK
AC_FUNC_LSTAT_FOLLOWS_SLASHED_SYMLINK
AC_FUNC_MKTIME
AC_FUNC_MMAP
AC_FUNC_STRNLEN
AC_FUNC_STRTOD
AC_FUNC_CLOSEDIR_VOID
rlib=""
posix4_lib=""