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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(Hercules)
AC_REVISION([m4_esyscmd_s([type git >/dev/null 2>&1 && git describe --always 2>/dev/null || echo '(unknown version)'])])
AC_PREREQ([2.59])
AC_CONFIG_SRCDIR([src/common/cbasetypes.h])
AC_CONFIG_FILES([Makefile src/common/Makefile])
AC_CONFIG_FILES([3rdparty/mt19937ar/Makefile 3rdparty/libconfig/Makefile])
AC_CONFIG_FILES([src/char/Makefile src/login/Makefile])
AC_CONFIG_FILES([src/map/Makefile src/plugins/Makefile src/tool/Makefile])
AC_CONFIG_FILES([src/test/Makefile])
AC_CONFIG_FILES([tools/HPMHookGen/Makefile])
dnl AC_USE_SYSTEM_EXTENSIONS requires autoconf 2.60 or newer. Fall back to AC_GNU_SOURCE otherwise.
m4_ifdef([AC_USE_SYSTEM_EXTENSIONS],
[AC_USE_SYSTEM_EXTENSIONS],
[AC_GNU_SOURCE]
)
#
# 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.h)]
),
[enable_packetver="$enableval"],
[enable_packetver=""]
)
#
# packetver-RE
#
AC_ARG_ENABLE(
[packetver-re],
AC_HELP_STRING(
[--enable-packetver-re],
[Sets or unsets the PACKETVER_RE define - see src/common/mmo.h (currently disabled by default)]
),
[
enable_packetver_re="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-packetver-re=$enableval... stopping]]);;
esac
],
[enable_packetver_re="no"]
)
#
# Obfuscation keys
#
AC_ARG_WITH(
[key1],
AC_HELP_STRING(
[--with-key1@<:@=ARG@:>@],
[Set the first obfuscation key (ignored unless the other two are also specified)]
),
[
obfuscationkey1="$( expr "0x$withval" : '0*x*\(0x@<:@A-Fa-f0-9@:>@\{8\}\)' )"
if ! expr "x$obfuscationkey1" : 'x0x@<:@A-Fa-f0-9@:>@\{8\}' >/dev/null 2>&1; then
obfuscationkey1=""
fi
],
[
obfuscationkey1=""
]
)
AC_ARG_WITH(
[key2],
AC_HELP_STRING(
[--with-key2@<:@=ARG@:>@],
[Set the second obfuscation key (ignored unless the other two are also specified)]
),
[
obfuscationkey2="$( expr "0x$withval" : '0*x*\(0x@<:@A-Fa-f0-9@:>@\{8\}\)' )"
if ! expr "x$obfuscationkey2" : 'x0x@<:@A-Fa-f0-9@:>@\{8\}' >/dev/null 2>&1; then
obfuscationkey2=""
fi
],
[
obfuscationkey2=""
]
)
AC_ARG_WITH(
[key3],
AC_HELP_STRING(
[--with-key3@<:@=ARG@:>@],
[Set the third obfuscation key (ignored unless the other two are also specified)]
),
[
obfuscationkey3="$( expr "0x$withval" : '0*x*\(0x@<:@A-Fa-f0-9@:>@\{8\}\)' )"
if ! expr "x$obfuscationkey3" : 'x0x@<:@A-Fa-f0-9@:>@\{8\}' >/dev/null 2>&1; then
obfuscationkey3=""
fi
],
[
obfuscationkey3=""
]
)
#
# debug
#
AC_ARG_ENABLE(
[debug],
AC_HELP_STRING(
[--enable-debug@<:@=ARG@:>@],
[
Compiles extra debug code. (disabled by default)
(available options: yes, no, gdb)
]
),
[
enable_debug="$enableval"
case $enableval in
"no");;
"yes");;
"gdb");;
*) AC_MSG_ERROR([[invalid argument --enable-debug=$enableval... stopping]]);;
esac
],
[enable_debug="no"]
)
#
# 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 most modern Dedicated Servers cpufreq is preconfigured, see your distribution's
manual how to disable it).
Furthermore, If your CPU has built-in CPU-Frequency scaling features (such as Intel's
SpeedStep(R)), do not enable this option. Recent CPUs (Intel Core or newer) guarantee
a fixed increment rate for their TSC, so it should be safe to use, but please doublecheck
the documentation of both your CPU and OS before enabling this option.
]
),
[
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 disabled by default)
]
),
[
enable_lto="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-lto=$disableval... stopping]]);;
esac
],
[enable_lto="no"]
)
#
# static linking
#
AC_ARG_ENABLE(
[static],
AC_HELP_STRING(
[--enable-static],
[
Enables or Disables Statick Linking (STATIC is disabled by default)
]
),
[
enable_static="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-static=$disableval... stopping]]);;
esac
],
[enable_static="no"]
)
#
# adress sanitize
#
AC_ARG_ENABLE(
[sanitize],
AC_HELP_STRING(
[--enable-sanitize@<:@=ARG@:>@],
[
Enables sanitizer. (disabled by default)
(available options: yes, no, full)
]
),
[
enable_sanitize="$enableval"
case $enableval in
"no");;
"yes");;
"full");;
*) AC_MSG_ERROR([[invalid argument --enable-sanitize=$disableval... stopping]]);;
esac
],
[enable_sanitize="no"]
)
#
# Renewal
#
AC_ARG_ENABLE(
[renewal],
AC_HELP_STRING(
[--disable-renewal],
[
Disable Ragnarok Renewal support (override settings in src/config/renewal.h)
]
),
[
enable_renewal="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-renewal=$enableval... stopping]]);;
esac
],
[enable_renewal="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 (default: 16384) NOT USED YET - EXPERIMENTAL]
),
[
if test "$withval" == "no"; then
CPPFLAGS="$CPPFLAGS -DMAXCONN=16384"
else
if ! test "$withval" -ge 0 -o "$withval" -lt 0 2>&- ; then
AC_MSG_ERROR([Invalid argument --with-maxconn=$withval ... stopping])
else
CPPFLAGS="$CPPFLAGS -DMAXCONN=$withval"
fi
fi
],
[
CPPFLAGS="$CPPFLAGS -DMAXCONN=16384"
]
)
#
# 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_CPP
AC_PATH_PROG(AR, ar)
AC_LANG([C])
CFLAGS="$CFLAGS -pipe -ffast-math -fvisibility=hidden -Wall -Wextra -Wno-sign-compare"
CPPFLAGS="$CPPFLAGS -I../common"
LDFLAGS="$LDFLAGS"
AC_C_BIGENDIAN(
[AC_MSG_ERROR([[bigendian is not supported... stopping]])],
,
[AC_MSG_WARN([[unable to determine endianess, only little endian is supported]])]
)
if test "$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])
]
)
#
# Check if the linker supports/accepts -rdynamic
# Generally only needed by the ELF linker, in order to produce backtraces.
# On non-ELF platforms, some compilers (i.e. gcc < 5 and clang on OSX) are able to ignore it, others will error out.
#
OLD_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -rdynamic"
AC_MSG_CHECKING([whether $CC accepts -rdynamic])
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv)
{
return 0;
}
])],
[
AC_MSG_RESULT([yes])
],
[
AC_MSG_RESULT([no])
LDFLAGS="$OLD_LDFLAGS"
],
[
AC_MSG_RESULT([guessing no])
]
)
#
# LTO Support test
#
if test "$enable_lto" != "no" ; then
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -flto"
OLD_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -flto"
AC_MSG_CHECKING([whether $CC supports -flto])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv){
return 0;
}
])],
[
AC_MSG_RESULT([yes])
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
],
[
AC_MSG_RESULT([guessing no])
]
)
fi
AC_DEFUN(AC_CHECK_SANITIZER_FLAG,
[
AC_MSG_CHECKING([whether $CC supports -fsanitize=$1])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fsanitize=$1"
OLD_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -fsanitize=$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
],
[
AC_MSG_RESULT([no])
AC_MSG_CHECKING([whether $CC requires -fsanitize-undefined-trap-on-error for -fsanitize=$1])
CFLAGS="$CFLAGS -fsanitize-undefined-trap-on-error"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
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"
]
)
]
)
#
# sanitize Support test
#
if test "$enable_sanitize" != "no" ; then
AC_CHECK_SANITIZER_FLAG(address)
if test "$enable_sanitize" == "full" ; then
# skipped because server have multiple issues: -fsanitize=alignment
AC_CHECK_SANITIZER_FLAG(shift)
AC_CHECK_SANITIZER_FLAG(integer-divide-by-zero)
AC_CHECK_SANITIZER_FLAG(unreachable)
AC_CHECK_SANITIZER_FLAG(vla-bound)
AC_CHECK_SANITIZER_FLAG(null)
AC_CHECK_SANITIZER_FLAG(return)
AC_CHECK_SANITIZER_FLAG(signed-integer-overflow)
AC_CHECK_SANITIZER_FLAG(bounds)
AC_CHECK_SANITIZER_FLAG(object-size)
AC_CHECK_SANITIZER_FLAG(float-divide-by-zero)
AC_CHECK_SANITIZER_FLAG(float-cast-overflow)
AC_CHECK_SANITIZER_FLAG(nonnull-attribute)
AC_CHECK_SANITIZER_FLAG(returns-nonnull-attribute)
AC_CHECK_SANITIZER_FLAG(bool)
AC_CHECK_SANITIZER_FLAG(enum)
AC_CHECK_SANITIZER_FLAG(vptr)
fi
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_WNOFLAG(clobbered)
AC_CHECK_COMPILER_WFLAG(empty-body)
AC_CHECK_COMPILER_WFLAG(newline-eof)
AC_CHECK_COMPILER_WFLAG(int-conversion)
AC_CHECK_COMPILER_WFLAG(enum-conversion)
AC_CHECK_COMPILER_WFLAG(shorten-64-to-32)
AC_CHECK_COMPILER_WFLAG(constant-conversion)
AC_CHECK_COMPILER_WFLAG(bool-conversion)
AC_CHECK_COMPILER_WFLAG(format-security)
AC_CHECK_COMPILER_WNOFLAG(format-nonliteral)
AC_CHECK_COMPILER_WNOFLAG(switch)
AC_CHECK_COMPILER_WNOFLAG(missing-field-initializers)
# 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="$CFLAGS -fPIC"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
SOFLAGS="$SOFLAGS -fPIC"
],
[
AC_MSG_RESULT([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"
my_shared_test_flags="$CFLAGS $SOFLAGS"
# default
CFLAGS="$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"
WITH_PLUGINS="yes"
#
# 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"
fi
my_shared_test_flags=""
AC_SUBST([WITH_PLUGINS])
AC_SUBST([SOFLAGS])
#
# -O2 implies -fstrict-aliasing, but the code is not safe for that
#
AC_MSG_CHECKING([whether $CC supports -fno-strict-aliasing])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-strict-aliasing"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[AC_MSG_RESULT([yes])],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
###############################################################################
# Check for libraries and header files.
#
#
# setrlimit - used to set the socket limit
#
AC_CHECK_FUNC([setrlimit],[CPPFLAGS="$CPPFLAGS -DHAVE_SETRLIMIT"])
#
# strnlen - string length with upper scan bound
#
AC_CHECK_FUNC([strnlen],[CPPFLAGS="$CPPFLAGS -DHAVE_STRNLEN"])
# libconfig
AC_CHECK_FUNCS([uselocale])
AC_CHECK_FUNCS([newlocale])
AC_CHECK_FUNCS([freelocale])
AC_CHECK_HEADERS([xlocale.h])
#
# Memory manager