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configure.in
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configure.in
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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_INIT(Pandas)
AC_REVISION($Revision$)
AC_PREREQ([2.59])
AC_LANG([C++])
AC_LANG_COMPILER_REQUIRE
AC_CONFIG_SRCDIR([src/common/cbasetypes.hpp])
AC_CONFIG_FILES([Makefile src/common/Makefile])
AC_CONFIG_FILES([3rdparty/libconfig/Makefile 3rdparty/yaml-cpp/Makefile])
AC_CONFIG_FILES([src/char/Makefile src/login/Makefile])
AC_CONFIG_FILES([src/map/Makefile src/tool/Makefile])
m4_include([tools/m4/ax_subdirs_configure.m4])
AX_SUBDIRS_CONFIGURE([3rdparty/breakpad], [--disable-tools])
AC_GNU_SOURCE
#
# Git branch and hash
#
AC_SUBST([git_branch],[$( git rev-parse --abbrev-ref HEAD )])
AC_SUBST([git_hash],[$( git rev-parse HEAD )])
#
# Memory managers
#
AC_ARG_ENABLE(
[manager],
AC_HELP_STRING(
[--enable-manager=ARG],
[memory managers: no, builtin, memwatch, dmalloc, gcollect, bcheck (defaults to builtin)]
),
[
enable_manager="$enableval"
case $enableval in
"no");;
"builtin");;
"memwatch");;
"dmalloc");;
"gcollect");;
"bcheck");;
*) AC_MSG_ERROR([[unknown memory manager '$enableval'... stopping]]);;
esac
],
[enable_manager="builtin"]
)
#
# packetver
#
AC_ARG_ENABLE(
[packetver],
AC_HELP_STRING(
[--enable-packetver=ARG],
[Sets the PACKETVER define. (see src/common/mmo.hpp)]
),
[enable_packetver="$enableval"],
[enable_packetver=""]
)
#
# Crashrpt Appid
#
AC_ARG_ENABLE(
[crashappid],
AC_HELP_STRING(
[--enable-crashappid=@<:@=ARG@:>@],
[Sets the CRASHRPT_APPID define. (see src/common/crashdump.cpp)]
),
[enable_crashappid="$enableval"],
[enable_crashappid=""]
)
#
# Crashrpt Public Key
#
AC_ARG_ENABLE(
[crashpubkey],
AC_HELP_STRING(
[--enable-crashpubkey=@<:@=ARG@:>@],
[Sets the CRASHRPT_PUBLICKEY define. (see src/common/crashdump.cpp)]
),
[enable_crashpubkey="$enableval"],
[enable_crashpubkey=""]
)
#
# Epoll
#
AC_ARG_ENABLE(
[epoll],
AC_HELP_STRING(
[--enable-epoll],
[use epoll(4) on Linux]
),
[enable_epoll=$enableval],
[enable_epoll=no]
)
if test x$enable_epoll = xno; then
have_linux_epoll=no
else
AC_MSG_CHECKING([for Linux epoll(4)])
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[
#ifndef __linux__
#error This is not Linux
#endif
#include <sys/epoll.h>
],
[epoll_create1 (EPOLL_CLOEXEC);])],
[have_linux_epoll=yes],
[have_linux_epoll=no]
)
AC_MSG_RESULT([$have_linux_epoll])
fi
if test x$enable_epoll,$have_linux_epoll = xyes,no; then
AC_MSG_ERROR([epoll support explicitly enabled but not available])
fi
#
# debug
#
AC_ARG_ENABLE(
[debug],
AC_HELP_STRING(
[--enable-debug@<:@=ARG@:>@],
[
Compiles extra debug code. (disabled by default)
(available options: yes, no, gdb)
]
),
[
enable_debug="$enableval"
case $enableval in
"no");;
"yes");;
"gdb");;
*) AC_MSG_ERROR([[invalid argument --enable-debug=$enableval... stopping]]);;
esac
],
[enable_debug="no"]
)
#
# renewal
#
AC_ARG_ENABLE(
[prere],
AC_HELP_STRING(
[--enable-prere@<:@=ARG@:>@],
[
Compiles serv in prere mode. (disabled by default)
(available options: yes, no)
]
),
[
enable_prere="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-prere=$enableval... stopping]]);;
esac
],
[enable_prere="no"]
)
#
# VIP
#
AC_ARG_ENABLE(
[vip],
AC_HELP_STRING(
[--enable-vip@<:@=ARG@:>@],
[
Compiles serv with vip features. (disabled by default)
(available options: yes, no)
]
),
[
enable_vip="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-vip=$enableval... stopping]]);;
esac
],
[enable_vip="no"]
)
#
# warn
#
AC_ARG_ENABLE(
[warn],
AC_HELP_STRING(
[--enable-warn@<:@=ARG@:>@],
[
Compiles with warnings. (disabled by default)
(available options: yes, no, extra)
]
),
[
enable_warn="$enableval"
case $enableval in
"no");;
"yes");;
"extra");;
*) AC_MSG_ERROR([[invalid argument --enable-warn=$enableval... stopping]]);;
esac
],
[enable_warn="no"]
)
#
# Buildbot
#
AC_ARG_ENABLE(
[buildbot],
AC_HELP_STRING(
[--enable-buildbot@<:@=ARG@:>@],
[(available options: yes, no)]
),
[
enable_buildbot="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-buildbot=$enableval... stopping]]);;
esac
],
[enable_buildbot="no"]
)
#
# RDTSC as Tick Source
#
AC_ARG_ENABLE(
[rdtsc],
AC_HELP_STRING(
[--enable-rdtsc],
[
Uses rdtsc as timing source (disabled by default)
Enable it when you've timing issues.
(For example: in conjunction with XEN or Other Virtualization mechanisms)
Note:
Please ensure that you've disabled dynamic CPU-Frequencys, such as power saving options.
(On the most modern Dedicated Servers cpufreq is preconfigured, see your distribution's manual
how to disable it)
]
),
[
enable_rdtsc=1
],
[enable_rdtsc=0]
)
#
# Profiler
#
AC_ARG_ENABLE(
[profiler],
AC_HELP_STRING(
[--enable-profiler=ARG],
[Profilers: no, gprof (disabled by default)]
),
[
enable_profiler="$enableval"
case $enableval in
"no");;
"gprof");;
*) AC_MSG_ERROR([[invalid argument --enable-profiler=$enableval... stopping]]);;
esac
],
[enable_profiler="no"]
)
#
# 64bit
#
AC_ARG_ENABLE(
[64bit],
AC_HELP_STRING(
[--disable-64bit],
[
Enforce 32bit output on x86_64 systems.
]
),
[
enable_64bit="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-64bit=$enableval... stopping]]);;
esac
],
[enable_64bit="yes"]
)
#
# LTO
#
AC_ARG_ENABLE(
[lto],
AC_HELP_STRING(
[--enable-lto],
[
Enables or Disables Linktime Code Optimization (LTO is enabled by default)
]
),
[
enable_lto="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-lto=$disableval... stopping]]);;
esac
],
[enable_lto="yes"]
)
#
# Optionally set the max number of network conenctions
# the core will be support
#
AC_ARG_WITH(
[maxconn],
AC_HELP_STRING(
[--with-maxconn@<:@=ARG@:>@],
[
optionally set the maximum connections the core can handle.
By default the system header value will be used.
This will only be the compile time limit, make sure you set
the correct limit with ulimit on your OS.
]
),
[
if ! test "$withval" -ge 0 -o "$withval" -lt 0 2>&- ; then
AC_MSG_ERROR([Invalid argument --with-maxconn=$withval ... stopping])
else
CPPFLAGS="$CPPFLAGS -DMAXCONN=$withval"
fi
],
[
CPPFLAGS="$CPPFLAGS"
]
)
#
# output bin name
#
AC_ARG_WITH(
[outputlogin],
AC_HELP_STRING(
[--with-outputlogin@<:@=ARG@:>@],
[Specify the login-serv output name (defaults to login-server)]
),
[output_login="$withval"],
[output_login="login-server"]
)
AC_SUBST([OLOG],$output_login)
AC_ARG_WITH(
[outputchar],
AC_HELP_STRING(
[--with-outputchar@<:@=ARG@:>@],
[Specify the char-serv output name (defaults to char-server)]
),
[output_char="$withval"],
[output_char="char-server"]
)
AC_SUBST([OCHR],$output_char)
AC_ARG_WITH(
[outputmap],
AC_HELP_STRING(
[--with-outputmap@<:@=ARG@:>@],
[Specify the map-serv output name (defaults to map-server)]
),
[output_map="$withval"],
[output_map="map-server"]
)
AC_SUBST([OMAP],$output_map)
#
# Optionally specify the path to mysql_config
#
AC_ARG_WITH(
[mysql],
AC_HELP_STRING(
[--with-mysql@<:@=ARG@:>@],
[optionally specify the path to the mysql_config executable]
),
[
if test "$withval" != "no" ; then
if test ! -x "$withval" ; then
AC_MSG_ERROR([$withval is not an executable file])
fi
MYSQL_CONFIG_HOME="$withval"
fi
]
)
#
# Manual MYSQL_CFLAGS (optional)
#
AC_ARG_WITH(
[MYSQL_CFLAGS],
AC_HELP_STRING(
[--with-MYSQL_CFLAGS=ARG],
[specify MYSQL_CFLAGS manually (instead of using "mysql_config --include")]
),
[
manual_MYSQL_CFLAGS="yes"
MYSQL_CFLAGS="$withval"
],
[manual_MYSQL_CFLAGS="no"]
)
#
# Manual MYSQL_LIBS (optional)
#
AC_ARG_WITH(
[MYSQL_LIBS],
AC_HELP_STRING(
[--with-MYSQL_LIBS=ARG],
[specify MYSQL_LIBS manually (instead of using "mysql_config --libs")]
),
[
manual_MYSQL_LIBS="yes"
MYSQL_LIBS="$withval"
],
[manual_MYSQL_LIBS="no"]
)
#
# Enable/disable PCRE and optionally specify the path (optional library)
#
AC_ARG_WITH(
[pcre],
AC_HELP_STRING(
[--with-pcre@<:@=ARG@:>@],
[use PCRE library, optionally specify the full path of pcre installation directory (by default pcre is used if found)]
),
[
if test "$withval" = "no" ; then
want_pcre="no"
else
want_pcre="yes"
require_pcre="yes"
if test "$withval" != "yes" ; then
if test ! -d "$withval" ; then
AC_MSG_ERROR([$withval is not a directoy])
fi
PCRE_HOME="$withval"
fi
fi
],
[want_pcre="yes" require_pcre="no"]
)
#
# Specify the path of the zlib library (required library)
#
AC_ARG_WITH(
[zlib],
AC_HELP_STRING(
[--with-zlib=DIR],
[root directory path of zlib installation (defaults to /usr/local or /usr if not found in /usr/local).
Assumes that the header files are in DIR/include and the library files are in DIR/lib]
),
[
test -n "$withval" && ZLIB_HOME="$withval"
],
[
ZLIB_HOME=/usr/local
test ! -f "${ZLIB_HOME}/include/zlib.h" && ZLIB_HOME=/usr
]
)
###############################################################################
# Check for programs and types.
#
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_CXX
AC_PATH_PROG(AR, ar)
AC_LANG([C++])
CFLAGS="$CFLAGS -pipe -ffast-math -Wall"
CPPFLAGS="$CPPFLAGS -I../common"
CXXFLAGS="$CXXFLAGS -std=c++11"
#CXXFLAGS="$CXXFLAGS -std=gnu++11"
CXXFLAG_CLEARS="-std=c++11"
AC_C_BIGENDIAN(
[AC_MSG_ERROR([[bigendian is not supported... stopping]])],
,
[AC_MSG_WARN([[unable to determine endianess, only little endian is supported]])]
)
if test "$enable_64bit" = "no" ; then
AC_MSG_CHECKING([whether pointers can be stored in ints (old code)])
pointers_fit_in_ints="no"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[static int test_array[((long int)sizeof(int)) == ((long int)sizeof(void*)) ? 1 : -1];]])],
[pointers_fit_in_ints="yes"],
[]
)
if test "$pointers_fit_in_ints" = "no" ; then
CFLAGS="$CFLAGS -m32"
LDFLAGS="$LDFLAGS -m32"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[static int test_array[((long int)sizeof(int)) == ((long int)sizeof(void *)) ? 1 : -1];]])],
[pointers_fit_in_ints="yes (with -m32)"],
[]
)
fi
AC_MSG_RESULT($pointers_fit_in_ints)
if test "$pointers_fit_in_ints" = "no" ; then
AC_MSG_ERROR([pointers cannot be stored in ints, required for old code... stopping])
fi
fi
#
# check if we're producing 32bit code - so well produce binarys for at least i686 (speedup: cmovs, and cmpchg8 support)
#
AC_MSG_CHECKING([whether $CC produces 32bit code])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv){
if(sizeof(void*) == 4) return 0;
else return 1;
}
])],
[
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([whether $CC supports -march=i686 (and we can run it)])
OLD_CFLAGS="$CFLAGS"
OLD_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS -march=i686"
LDFLAGS="$LDFLAGS -march=i686"
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv) { return 0; }
])],
[
AC_MSG_RESULT([yes])
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
],
[
AC_MSG_RESULT([guessing no])
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
]
)
],
[
AC_MSG_RESULT([no])
],
[
AC_MSG_RESULT([guessing no])
]
)
#
# Check if CC supports __thread attribute (Thread Local Storage)
# (Usually our OSX friends 're lacking support of it in older llvm versions ..)
#
AC_MSG_CHECKING([whether $CC supports __thread specifier (TLS)])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
__thread int g_Test = -1;
int main(int argc, char **argv){
g_Test = 0;
return g_Test;
}
])],
[
AC_MSG_RESULT([yes])
CPPFLAGS="$CPPFLAGS -DHAS_TLS"
],
[
AC_MSG_RESULT([no])
]
)
#
# LTO Support test
#
if test "$enable_lto" != "no" ; then
OPT_LTO_AR=""
OPT_LTO=""
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -flto -fuse-linker-plugin -ffat-lto-objects"
OLD_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -flto -fuse-linker-plugin -ffat-lto-objects"
AC_MSG_CHECKING([whether $CC supports -ffat-lto-objects])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv){
return 0;
}
])],
[
AC_MSG_RESULT([yes])
OPT_LTO_AR="-ffat-lto-objects"
],
[
AC_MSG_RESULT([no])
],
[
AC_MSG_RESULT([guessing no])
]
)
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
CFLAGS="$CFLAGS -flto -fuse-linker-plugin"
LDFLAGS="$LDFLAGS -flto -fuse-linker-plugin"
AC_MSG_CHECKING([whether $CC supports -flto -fuse-linker-plugin])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv){
return 0;
}
])],
[
AC_MSG_RESULT([yes])
OPT_LTO_AR="-flto -fuse-linker-plugin $OPT_LTO_AR"
OPT_LTO="-flto -fuse-linker-plugin"
],
[
AC_MSG_RESULT([no])
],
[
AC_MSG_RESULT([guessing no])
]
)
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
fi
AC_DEFUN(AC_CHECK_COMPILER_WFLAG,
[
AC_MSG_CHECKING([whether $CC supports -W$1])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -W$1"
# Optionally, run a test
if test "x$2" != "x"; then
AC_MSG_CHECKING([whether $CC can actually use -W$1])
CFLAGS="$OLD_CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([$2])],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -W$1"
],
)
fi
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
]
)
AC_DEFUN(AC_CHECK_COMPILER_WNOFLAG,
[
AC_MSG_CHECKING([whether $CC supports -Wno-$1])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -Wno-$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
# Recent versions of gcc don't fail if -Wno-foo is not recognized
# (unless there are also other warnings), so we also check for -Wfoo
# which always fails if not supported
CFLAGS="$OLD_CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -Wno-$1"
# Optionally, run a test
if test "x$2" != "x"; then
AC_MSG_CHECKING([whether $CC can actually use -Wno-$1])
CFLAGS="$OLD_CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([$2])],
[
AC_MSG_RESULT([not needed but enabled])
CFLAGS="$OLD_CFLAGS"
],
[
CFLAGS="$OLD_CFLAGS -Werror -Wno-$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([$2])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -Wno-$1"
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
]
)
fi
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
]
)
AC_CHECK_COMPILER_WNOFLAG(unused-parameter, [int foo(int bar) { return 0; }])
AC_CHECK_COMPILER_WFLAG(empty-body)
AC_CHECK_COMPILER_WNOFLAG(switch)
AC_CHECK_COMPILER_WNOFLAG(missing-field-initializers)
AC_MSG_CHECKING([whether compiler is clang])
if test -n "`$CC --version | grep -i clang`" ; then
AC_MSG_RESULT([yes, skipping some flags..])
else
AC_MSG_RESULT([no])
AC_CHECK_COMPILER_WNOFLAG(maybe-uninitialized)
AC_CHECK_COMPILER_WNOFLAG(clobbered)
fi
# Certain versions of gcc make -Wshadow completely useless by making it flood
# you with unnecessary warnings <https://lkml.org/lkml/2006/11/28/239>
# Let's check if we can really use it
SAVED_OLD_CFLAGS="$CFLAGS"
AC_CHECK_COMPILER_WFLAG(shadow)
if test "x$CFLAGS" != "x$SAVED_OLD_CFLAGS"; then
AC_MSG_CHECKING([whether $CC can efficiently use -Wshadow])
NEW_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -Wshadow"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([
int foo(void) {
return 0;
}
int bar(void) {
int foo = 0;
return foo + 1;
}
])],
[
AC_MSG_RESULT([yes])
CFLAGS="$NEW_CFLAGS"
],
[
AC_MSG_RESULT([no])
CFLAGS="$SAVED_OLD_CFLAGS"
]
)
fi
AC_MSG_CHECKING([whether $CC supports -fPIC])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fPIC"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
compiler_supports_pic="yes"
],
[
AC_MSG_RESULT([no])
compiler_supports_pic="no"
]
)
CFLAGS="$OLD_CFLAGS"
#
# option for shared objects
#
AC_MSG_CHECKING([how to make shared objects])
OLD_CFLAGS="$CFLAGS"
compiler_shared_objects=""
compiler_supports_shared_objects="no"
if test "$compiler_supports_pic" = "yes" ; then
my_shared_test_flags="$CFLAGS -fPIC"
fi
# default
CFLAGS="$my_shared_test_flags -shared"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
compiler_shared_objects="-shared"
compiler_supports_shared_objects="yes"
]
)
# BeOS specific
CFLAGS="$my_shared_test_flags -nostart"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
compiler_shared_objects="-nostart"
compiler_supports_shared_objects="yes"
]
)
CFLAGS="$OLD_CFLAGS"
if test "$compiler_supports_shared_objects" = "no" ; then
AC_MSG_RESULT([not supported])
AC_MSG_NOTICE([compiler is unable to generate shared objects, disabled plugins (optional)])
WITH_PLUGINS="no"
else
AC_MSG_RESULT([$compiler_shared_objects $compiler_supports_shared_objects])
SOFLAGS="$SOFLAGS $compiler_shared_objects"
AC_SUBST([SOFLAGS])
#
# On certain platforms, undefined references on shared libraries won't be checked
# unless explicitly required with the --no-undefined linker option
#
AC_MSG_CHECKING([whether $CC needs -Wl,--no-undefined to check for undefined references in shared objects])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$SOFLAGS"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
void foo(void) {
foobar();
}
])],
[
CFLAGS="$SOFLAGS -Wl,--no-undefined"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void) {
return bar;
}
])],
[
AC_MSG_RESULT([yes])
SOFLAGS="$SOFLAGS -Wl,--no-undefined"
],
[
AC_MSG_RESULT([unsupported (undefined references check will be ignored)])
]
)
],
[
AC_MSG_RESULT([no])
]
)
CFLAGS="$OLD_CFLAGS"
#
# shared objects need position independent code; some platforms emit
# it always, others need -fPIC
#
AC_MSG_CHECKING([whether $CC needs -fPIC for shared objects])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $SOFLAGS"
WITH_PLUGINS="yes"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
],
[
if test "$compiler_supports_pic" = "yes" ; then
# Verify if -shared really fails due to lack of -fPIC or something else
CFLAGS="$CFLAGS -fPIC"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -fPIC"
],
[
AC_MSG_RESULT([no, but fails for another reason])
AC_MSG_ERROR([compiler is unable to compile shared objects for an unhandled reason, please report this with attached config.log... stopping])
]
)
else
# Disable compilation of plugins (optional), so 'make all' does not fail
AC_MSG_RESULT([yes, but unsupported])
AC_MSG_NOTICE([compiler is unable to generate position independent code, disabled plugins (optional)])
WITH_PLUGINS="no"
fi
]
)
fi
my_shared_test_flags=""
AC_SUBST([WITH_PLUGINS])
#
# -O2 implies -fstrict-aliasing, but the code is not safe for that
#
AC_MSG_CHECKING([whether $CC supports -fno-strict-aliasing])
OLD_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -fno-strict-aliasing"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[AC_MSG_RESULT([yes])],
[
AC_MSG_RESULT([no])
CPPFLAGS="$OLD_CPPFLAGS"
]
)
###############################################################################
# Check for libraries and header files.
#
#
# setrlimit - used to set the socket limit
#
AC_CHECK_FUNC([setrlimit],[CPPFLAGS="$CPPFLAGS -DHAVE_SETRLIMIT"])