dnl configure.in for libevent
-dnl Dug Song <dugsong@monkey.org>
+dnl Copyright 2000-2007 Niels Provos
+dnl Copyright 2007-2012 Niels Provos and Nick Mathewson
+dnl
+dnl See LICENSE for copying information.
+dnl
+dnl Original version Dug Song <dugsong@monkey.org>
+
AC_PREREQ(2.59c)
AC_INIT(event.c)
AC_CONFIG_MACRO_DIR([m4])
-AM_INIT_AUTOMAKE(libevent,2.0.10-stable)
+AM_INIT_AUTOMAKE(libevent,2.0.18-stable)
+dnl Enable silent Automake rules if present
+m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])])
AM_CONFIG_HEADER(config.h)
-AC_DEFINE(NUMERIC_VERSION, 0x02000a00, [Numeric representation of the version])
+AC_DEFINE(NUMERIC_VERSION, 0x02001200, [Numeric representation of the version])
dnl Initialize prefix.
if test "$prefix" = "NONE"; then
prefix="/usr/local"
fi
+AC_CANONICAL_BUILD
+AC_CANONICAL_HOST
+dnl the 'build' machine is where we run configure and compile
+dnl the 'host' machine is where the resulting stuff runs.
+
+case "$host_os" in
+
+ osf5*)
+ CFLAGS="$CFLAGS -D_OSF_SOURCE"
+ ;;
+esac
+
dnl Checks for programs.
AC_PROG_CC
+AM_PROG_CC_C_O
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_MKDIR_P
CFLAGS="$CFLAGS -fno-strict-aliasing"
fi
+# OS X Lion started deprecating the system openssl. Let's just disable
+# all deprecation warnings on OS X.
+case "$host_os" in
+
+ darwin*)
+ CFLAGS="$CFLAGS -Wno-deprecated-declarations"
+ ;;
+esac
+
AC_ARG_ENABLE(gcc-warnings,
AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings with GCC))
AC_ARG_ENABLE(thread-support,
AC_ARG_ENABLE(debug-mode,
AS_HELP_STRING(--disable-debug-mode, disable support for running in debug mode),
[], [enable_debug_mode=yes])
+AC_ARG_ENABLE([libevent-install],
+ AS_HELP_STRING([--disable-libevent-install, disable installation of libevent]),
+ [], [enable_libevent_install=yes])
+AC_ARG_ENABLE([libevent-regress],
+ AS_HELP_STRING([--disable-libevent-regress, skip regress in make check]),
+ [], [enable_libevent_regress=yes])
+AC_ARG_ENABLE([function-sections],
+ AS_HELP_STRING([--enable-function-sections, make static library allow smaller binaries with --gc-sections]),
+ [], [enable_function_sections=no])
+
AC_PROG_LIBTOOL
dnl AC_DISABLE_SHARED
AC_SUBST(LIBTOOL_DEPS)
+AM_CONDITIONAL([BUILD_REGRESS], [test "$enable_libevent_regress" = "yes"])
+
dnl Checks for libraries.
AC_SEARCH_LIBS([inet_ntoa], [nsl])
AC_SEARCH_LIBS([socket], [socket])
AC_SEARCH_LIBS([clock_gettime], [rt])
AC_SEARCH_LIBS([sendfile], [sendfile])
+dnl - check if the macro WIN32 is defined on this compiler.
+dnl - (this is how we check for a windows version of GCC)
+AC_MSG_CHECKING(for WIN32)
+AC_TRY_COMPILE(,
+ [
+#ifndef WIN32
+die horribly
+#endif
+ ],
+ bwin32=true; AC_MSG_RESULT(yes),
+ bwin32=false; AC_MSG_RESULT(no),
+)
+
+dnl - check if the macro __CYGWIN__ is defined on this compiler.
+dnl - (this is how we check for a cygwin version of GCC)
+AC_MSG_CHECKING(for CYGWIN)
+AC_TRY_COMPILE(,
+ [
+#ifndef __CYGWIN__
+die horribly
+#endif
+ ],
+ cygwin=true; AC_MSG_RESULT(yes),
+ cygwin=false; AC_MSG_RESULT(no),
+)
+
+AC_CHECK_HEADERS([zlib.h])
+
+if test "x$ac_cv_header_zlib_h" = "xyes"; then
dnl Determine if we have zlib for regression tests
dnl Don't put this one in LIBS
save_LIBS="$LIBS"
AC_DEFINE(HAVE_LIBZ, 1, [Define if the system has zlib])])
LIBS="$save_LIBS"
AC_SUBST(ZLIB_LIBS)
+fi
AM_CONDITIONAL(ZLIB_REGRESS, [test "$have_zlib" = "yes"])
dnl See if we have openssl. This doesn't go in LIBS either.
+if test "$bwin32" = true; then
+ EV_LIB_WS32=-lws2_32
+ EV_LIB_GDI=-lgdi32
+else
+ EV_LIB_WS32=
+ EV_LIB_GDI=
+fi
+AC_SUBST(EV_LIB_WS32)
+AC_SUBST(EV_LIB_GDI)
+AC_SUBST(OPENSSL_LIBADD)
+
+AC_CHECK_HEADERS([openssl/bio.h])
+
if test "$enable_openssl" = "yes"; then
save_LIBS="$LIBS"
LIBS=""
OPENSSL_LIBS=""
have_openssl=no
AC_SEARCH_LIBS([SSL_new], [ssl],
- [have_openssl=yes
- OPENSSL_LIBS="$LIBS"
- AC_DEFINE(HAVE_OPENSSL, 1, [Define if the system has openssl])])
+ [have_openssl=yes
+ OPENSSL_LIBS="$LIBS -lcrypto $EV_LIB_GDI $EV_LIB_WS32 $OPENSSL_LIBADD"
+ AC_DEFINE(HAVE_OPENSSL, 1, [Define if the system has openssl])],
+ [have_openssl=no],
+ [-lcrypto $EV_LIB_GDI $EV_LIB_WS32 $OPENSSL_LIBADD])
LIBS="$save_LIBS"
AC_SUBST(OPENSSL_LIBS)
fi
dnl Checks for header files.
AC_HEADER_STDC
-AC_CHECK_HEADERS(fcntl.h stdarg.h inttypes.h stdint.h stddef.h poll.h unistd.h sys/epoll.h sys/time.h sys/queue.h sys/event.h sys/param.h sys/ioctl.h sys/select.h sys/devpoll.h port.h netinet/in.h netinet/in6.h sys/socket.h sys/uio.h arpa/inet.h sys/eventfd.h sys/mman.h sys/sendfile.h sys/wait.h netdb.h)
+AC_CHECK_HEADERS([fcntl.h stdarg.h inttypes.h stdint.h stddef.h poll.h unistd.h sys/epoll.h sys/time.h sys/queue.h sys/event.h sys/param.h sys/ioctl.h sys/select.h sys/devpoll.h port.h netinet/in.h netinet/in6.h sys/socket.h sys/uio.h arpa/inet.h sys/eventfd.h sys/mman.h sys/sendfile.h sys/wait.h netdb.h])
AC_CHECK_HEADERS(sys/sysctl.h, [], [], [
#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>
)
fi
-dnl - check if the macro WIN32 is defined on this compiler.
-dnl - (this is how we check for a windows version of GCC)
-AC_MSG_CHECKING(for WIN32)
-AC_TRY_COMPILE(,
- [
-#ifndef WIN32
-die horribly
-#endif
- ],
- bwin32=true; AC_MSG_RESULT(yes),
- bwin32=false; AC_MSG_RESULT(no),
-)
-
AM_CONDITIONAL(BUILD_WIN32, test x$bwin32 = xtrue)
+AM_CONDITIONAL(BUILD_CYGWIN, test x$cygwin = xtrue)
+AM_CONDITIONAL(BUILD_WITH_NO_UNDEFINED, test x$bwin32 = xtrue || test x$cygwin = xtrue)
if test x$bwin32 = xtrue; then
AC_SEARCH_LIBS([getservbyname],[ws2_32])
AC_HEADER_TIME
dnl Checks for library functions.
-AC_CHECK_FUNCS(gettimeofday vasprintf fcntl clock_gettime strtok_r strsep getaddrinfo getnameinfo strlcpy inet_ntop inet_pton signal sigaction strtoll inet_aton pipe eventfd sendfile mmap splice arc4random arc4random_buf issetugid geteuid getegid getservbyname getprotobynumber setenv unsetenv putenv)
+AC_CHECK_FUNCS([gettimeofday vasprintf fcntl clock_gettime strtok_r strsep])
+AC_CHECK_FUNCS([getnameinfo strlcpy inet_ntop inet_pton signal sigaction strtoll inet_aton pipe eventfd sendfile mmap splice arc4random arc4random_buf issetugid geteuid getegid getprotobynumber setenv unsetenv putenv sysctl])
+
+AC_CACHE_CHECK(
+ [for getaddrinfo],
+ [libevent_cv_getaddrinfo],
+ [AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+ #ifdef HAVE_NETDB_H
+ #include <netdb.h>
+ #endif
+ ]],
+ [[
+ getaddrinfo;
+ ]]
+ )],
+ [libevent_cv_getaddrinfo=yes],
+ [libevent_cv_getaddrinfo=no]
+ )]
+)
+if test "$libevent_cv_getaddrinfo" = "yes" ; then
+ AC_DEFINE([HAVE_GETADDRINFO], [1], [Do we have getaddrinfo()?])
+else
+AC_CHECK_FUNCS([getservbyname])
# Check for gethostbyname_r in all its glorious incompatible versions.
# (This is cut-and-pasted from Tor, which based its logic on
# Python's configure.in.)
AC_MSG_CHECKING([how many arguments gethostbyname_r() wants])
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS"
- AC_COMPILE_IFELSE(AC_LANG_PROGRAM([
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([
#include <netdb.h>
], [[
char *cp1, *cp2;
struct hostent *h1, *h2;
int i1, i2;
(void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2);
- ]]),[
+ ]])],[
AC_DEFINE(HAVE_GETHOSTBYNAME_R)
AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1,
[Define this if gethostbyname_r takes 6 arguments])
CFLAGS=$OLD_CFLAGS
])
+fi
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(size_t)
AC_CHECK_SIZEOF(void *)
-AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t, struct addrinfo], , ,
+AC_CHECK_TYPES([struct in6_addr, struct sockaddr_in6, sa_family_t, struct addrinfo, struct sockaddr_storage], , ,
[#define _GNU_SOURCE
#include <sys/types.h>
#ifdef HAVE_NETINET_IN_H
# Add some more warnings which we use in development but not in the
# released versions. (Some relevant gcc versions can't handle these.)
-if test x$enable_gcc_warnings = xyes; then
+if test x$enable_gcc_warnings = xyes && test "$GCC" = "yes"; then
- AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
#if !defined(__GNUC__) || (__GNUC__ < 4)
#error
-#endif]), have_gcc4=yes, have_gcc4=no)
+#endif])], have_gcc4=yes, have_gcc4=no)
- AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2)
#error
-#endif]), have_gcc42=yes, have_gcc42=no)
+#endif])], have_gcc42=yes, have_gcc42=no)
- AC_COMPILE_IFELSE(AC_LANG_PROGRAM([], [
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)
#error
-#endif]), have_gcc45=yes, have_gcc45=no)
+#endif])], have_gcc45=yes, have_gcc45=no)
+
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [
+#if !defined(__clang__)
+#error
+#endif])], have_clang=yes, have_clang=no)
CFLAGS="$CFLAGS -W -Wfloat-equal -Wundef -Wpointer-arith -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wredundant-decls -Wchar-subscripts -Wcomment -Wformat -Wwrite-strings -Wmissing-declarations -Wredundant-decls -Wnested-externs -Wbad-function-cast -Wswitch-enum -Werror"
CFLAGS="$CFLAGS -Wno-unused-parameter -Wstrict-aliasing"
if test x$have_gcc42 = xyes ; then
# These warnings break gcc 4.0.2 and work on gcc 4.2
- CFLAGS="$CFLAGS -Waddress -Wnormalized=id -Woverride-init"
+ CFLAGS="$CFLAGS -Waddress"
+ fi
+
+ if test x$have_gcc42 = xyes && test x$have_clang = xno; then
+ # These warnings break gcc 4.0.2 and clang, but work on gcc 4.2
+ CFLAGS="$CFLAGS -Wnormalized=id -Woverride-init"
fi
if test x$have_gcc45 = xyes ; then
# These warnings work on gcc 4.5
CFLAGS="$CFLAGS -Wlogical-op"
fi
+
+ if test x$have_clang = xyes; then
+ # Disable the unused-function warnings, because these trigger
+ # for minheap-internal.h related code.
+ CFLAGS="$CFLAGS -Wno-unused-function"
+ fi
+
##This will break the world on some 64-bit architectures
# CFLAGS="$CFLAGS -Winline"
fi
+LIBEVENT_GC_SECTIONS=
+if test "$GCC" = yes && test "$enable_function_sections" = yes ; then
+ AC_CACHE_CHECK(
+ [if linker supports omitting unused code and data],
+ [libevent_cv_gc_sections_runs],
+ [
+ dnl NetBSD will link but likely not run with --gc-sections
+ dnl http://bugs.ntp.org/1844
+ dnl http://gnats.netbsd.org/40401
+ dnl --gc-sections causes attempt to load as linux elf, with
+ dnl wrong syscalls in place. Test a little gauntlet of
+ dnl simple stdio read code checking for errors, expecting
+ dnl enough syscall differences that the NetBSD code will
+ dnl fail even with Linux emulation working as designed.
+ dnl A shorter test could be refined by someone with access
+ dnl to a NetBSD host with Linux emulation working.
+ origCFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Wl,--gc-sections"
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[
+ #include <stdlib.h>
+ #include <stdio.h>
+ ]],
+ [[
+ FILE * fpC;
+ char buf[32];
+ size_t cch;
+ int read_success_once;
+
+ fpC = fopen("conftest.c", "r");
+ if (NULL == fpC)
+ exit(1);
+ do {
+ cch = fread(buf, sizeof(buf), 1, fpC);
+ read_success_once |= (0 != cch);
+ } while (0 != cch);
+ if (!read_success_once)
+ exit(2);
+ if (!feof(fpC))
+ exit(3);
+ if (0 != fclose(fpC))
+ exit(4);
+
+ exit(EXIT_SUCCESS);
+ ]]
+ )],
+ [
+ dnl We have to do this invocation manually so that we can
+ dnl get the output of conftest.err to make sure it doesn't
+ dnl mention gc-sections.
+ if test "X$cross_compiling" = "Xyes" || grep gc-sections conftest.err ; then
+ libevent_cv_gc_sections_runs=no
+ else
+ libevent_cv_gc_sections_runs=no
+ ./conftest >/dev/null 2>&1 && libevent_cv_gc_sections_runs=yes
+ fi
+ ],
+ [libevent_cv_gc_sections_runs=no]
+ )
+ CFLAGS="$origCFLAGS"
+ AS_UNSET([origCFLAGS])
+ ]
+ )
+ case "$libevent_cv_gc_sections_runs" in
+ yes)
+ CFLAGS="-ffunction-sections -fdata-sections $CFLAGS"
+ LIBEVENT_GC_SECTIONS="-Wl,--gc-sections"
+ ;;
+ esac
+fi
+AC_SUBST([LIBEVENT_GC_SECTIONS])
+
+AM_CONDITIONAL([INSTALL_LIBEVENT], [test "$enable_libevent_install" = "yes"])
+
AC_CONFIG_FILES( [libevent.pc libevent_openssl.pc libevent_pthreads.pc] )
AC_OUTPUT(Makefile include/Makefile test/Makefile sample/Makefile)
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