diff options
Diffstat (limited to 'libevent-2.0.20-stable/configure.in')
| -rw-r--r-- | libevent-2.0.20-stable/configure.in | 806 |
1 files changed, 806 insertions, 0 deletions
diff --git a/libevent-2.0.20-stable/configure.in b/libevent-2.0.20-stable/configure.in new file mode 100644 index 0000000..6fc71cd --- /dev/null +++ b/libevent-2.0.20-stable/configure.in @@ -0,0 +1,806 @@ +dnl configure.in for libevent +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,2.0.20-stable) +AM_CONFIG_HEADER(config.h) +AC_DEFINE(NUMERIC_VERSION, 0x02001400, [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="$CFLAGS -D_OSF_SOURCE" + ;; +esac + +dnl Checks for programs. +AC_PROG_CC +AM_PROG_CC_C_O +AC_PROG_SED +AC_PROG_INSTALL +AC_PROG_LN_S +AC_PROG_MKDIR_P + +AC_PROG_GCC_TRADITIONAL + +# We need to test for at least gcc 2.95 here, because older versions don't +# have -fno-strict-aliasing +AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ +#if !defined(__GNUC__) || (__GNUC__ < 2) || (__GNUC__ == 2 && __GNUC_MINOR__ < 95) +#error +#endif])], have_gcc295=yes, have_gcc295=no) + +if test "$GCC" = "yes" ; then + # Enable many gcc warnings by default... + CFLAGS="$CFLAGS -Wall" + # And disable the strict-aliasing optimization, since it breaks + # our sockaddr-handling code in strange ways. + if test x$have_gcc295 = xyes; then + CFLAGS="$CFLAGS -fno-strict-aliasing" + fi +fi + +# OS X Lion started deprecating the system openssl. Let's just disable +# all deprecation warnings on OS X. +case "$host_os" in + + darwin*) + CFLAGS="$CFLAGS -Wno-deprecated-declarations" + ;; +esac + +AC_ARG_ENABLE(gcc-warnings, + AS_HELP_STRING(--enable-gcc-warnings, enable verbose warnings with GCC)) +AC_ARG_ENABLE(thread-support, + AS_HELP_STRING(--disable-thread-support, disable support for threading), + [], [enable_thread_support=yes]) +AC_ARG_ENABLE(malloc-replacement, + AS_HELP_STRING(--disable-malloc-replacement, disable support for replacing the memory mgt functions), + [], [enable_malloc_replacement=yes]) +AC_ARG_ENABLE(openssl, + AS_HELP_STRING(--disable-openssl, disable support for openssl encryption), + [], [enable_openssl=yes]) +AC_ARG_ENABLE(debug-mode, + AS_HELP_STRING(--disable-debug-mode, disable support for running in debug mode), + [], [enable_debug_mode=yes]) +AC_ARG_ENABLE([libevent-install], + AS_HELP_STRING([--disable-libevent-install, disable installation of libevent]), + [], [enable_libevent_install=yes]) +AC_ARG_ENABLE([libevent-regress], + AS_HELP_STRING([--disable-libevent-regress, skip regress in make check]), + [], [enable_libevent_regress=yes]) +AC_ARG_ENABLE([function-sections], + AS_HELP_STRING([--enable-function-sections, make static library allow smaller binaries with --gc-sections]), + [], [enable_function_sections=no]) + + +AC_PROG_LIBTOOL + +dnl Uncomment "AC_DISABLE_SHARED" to make shared librraries not get +dnl built by default. You can also turn shared libs on and off from +dnl the command line with --enable-shared and --disable-shared. +dnl AC_DISABLE_SHARED +AC_SUBST(LIBTOOL_DEPS) + +AM_CONDITIONAL([BUILD_REGRESS], [test "$enable_libevent_regress" = "yes"]) + +dnl Checks for libraries. +AC_SEARCH_LIBS([inet_ntoa], [nsl]) +AC_SEARCH_LIBS([socket], [socket]) +AC_SEARCH_LIBS([inet_aton], [resolv]) +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" +LIBS="" +ZLIB_LIBS="" +have_zlib=no +AC_SEARCH_LIBS([inflateEnd], [z], + [have_zlib=yes + ZLIB_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 -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([sys/stat.h]) +AC_CHECK_HEADERS(sys/sysctl.h, [], [], [ +#ifdef HAVE_SYS_PARAM_H +#include <sys/param.h> +#endif +]) +if test "x$ac_cv_header_sys_queue_h" = "xyes"; then + AC_MSG_CHECKING(for TAILQ_FOREACH in sys/queue.h) + AC_EGREP_CPP(yes, +[ +#include <sys/queue.h> +#ifdef TAILQ_FOREACH + yes +#endif +], [AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_TAILQFOREACH, 1, + [Define if TAILQ_FOREACH is defined in <sys/queue.h>])], + AC_MSG_RESULT(no) + ) +fi + +if test "x$ac_cv_header_sys_time_h" = "xyes"; then + AC_MSG_CHECKING(for timeradd in sys/time.h) + AC_EGREP_CPP(yes, +[ +#include <sys/time.h> +#ifdef timeradd + yes +#endif +], [ AC_DEFINE(HAVE_TIMERADD, 1, + [Define if timeradd is defined in <sys/time.h>]) + AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no) +) +fi + +if test "x$ac_cv_header_sys_time_h" = "xyes"; then + AC_MSG_CHECKING(for timercmp in sys/time.h) + AC_EGREP_CPP(yes, +[ +#include <sys/time.h> +#ifdef timercmp + yes +#endif +], [ AC_DEFINE(HAVE_TIMERCMP, 1, + [Define if timercmp is defined in <sys/time.h>]) + AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no) +) +fi + +if test "x$ac_cv_header_sys_time_h" = "xyes"; then + AC_MSG_CHECKING(for timerclear in sys/time.h) + AC_EGREP_CPP(yes, +[ +#include <sys/time.h> +#ifdef timerclear + yes +#endif +], [ AC_DEFINE(HAVE_TIMERCLEAR, 1, + [Define if timerclear is defined in <sys/time.h>]) + AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no) +) +fi + +if test "x$ac_cv_header_sys_time_h" = "xyes"; then + AC_MSG_CHECKING(for timerisset in sys/time.h) + AC_EGREP_CPP(yes, +[ +#include <sys/time.h> +#ifdef timerisset + yes +#endif +], [ AC_DEFINE(HAVE_TIMERISSET, 1, + [Define if timerisset is defined in <sys/time.h>]) + AC_MSG_RESULT(yes)] ,AC_MSG_RESULT(no) +) +fi + +if test "x$ac_cv_header_sys_sysctl_h" = "xyes"; then + AC_CHECK_DECLS([CTL_KERN, KERN_RANDOM, RANDOM_UUID, KERN_ARND], [], [], + [[#include <sys/types.h> + #include <sys/sysctl.h>]] + ) +fi + +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$bwin32 = xtrue; then + AC_SEARCH_LIBS([getservbyname],[ws2_32]) +fi + +dnl Checks for typedefs, structures, and compiler characteristics. +AC_C_CONST +AC_C_INLINE +AC_HEADER_TIME + +dnl Checks for library functions. +AC_CHECK_FUNCS([gettimeofday vasprintf fcntl clock_gettime strtok_r strsep]) +AC_CHECK_FUNCS([getnameinfo strlcpy inet_ntop inet_pton signal sigaction strtoll inet_aton pipe eventfd sendfile mmap splice arc4random arc4random_buf issetugid geteuid getegid getprotobynumber setenv unsetenv putenv sysctl]) +AC_CHECK_FUNCS([umask]) + +AC_CACHE_CHECK( + [for getaddrinfo], + [libevent_cv_getaddrinfo], + [AC_LINK_IFELSE( + [AC_LANG_PROGRAM( + [[ + #ifdef HAVE_NETDB_H + #include <netdb.h> + #endif + ]], + [[ + getaddrinfo; + ]] + )], + [libevent_cv_getaddrinfo=yes], + [libevent_cv_getaddrinfo=no] + )] +) +if test "$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.) +AH_TEMPLATE(HAVE_GETHOSTBYNAME_R, + [Define this if you have any gethostbyname_r()]) + +AC_CHECK_FUNC(gethostbyname_r, [ + AC_MSG_CHECKING([how many arguments gethostbyname_r() wants]) + OLD_CFLAGS=$CFLAGS + CFLAGS="$CFLAGS $MY_CPPFLAGS $MY_THREAD_CPPFLAGS $MY_CFLAGS" + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([ +#include <netdb.h> + ], [[ + char *cp1, *cp2; + struct hostent *h1, *h2; + int i1, i2; + (void)gethostbyname_r(cp1,h1,cp2,i1,&h2,&i2); + ]])],[ + AC_DEFINE(HAVE_GETHOSTBYNAME_R) + AC_DEFINE(HAVE_GETHOSTBYNAME_R_6_ARG, 1, + [Define this if gethostbyname_r takes 6 arguments]) + AC_MSG_RESULT(6) + ], [ + AC_TRY_COMPILE([ +#include <netdb.h> + ], [ + char *cp1, *cp2; + struct hostent *h1; + int i1, i2; + (void)gethostbyname_r(cp1,h1,cp2,i1,&i2); + ], [ + AC_DEFINE(HAVE_GETHOSTBYNAME_R) + AC_DEFINE(HAVE_GETHOSTBYNAME_R_5_ARG, 1, + [Define this if gethostbyname_r takes 5 arguments]) + AC_MSG_RESULT(5) + ], [ + AC_TRY_COMPILE([ +#include <netdb.h> + ], [ + char *cp1; + struct hostent *h1; + struct hostent_data hd; + (void) gethostbyname_r(cp1,h1,&hd); + ], [ + AC_DEFINE(HAVE_GETHOSTBYNAME_R) + AC_DEFINE(HAVE_GETHOSTBYNAME_R_3_ARG, 1, + [Define this if gethostbyname_r takes 3 arguments]) + AC_MSG_RESULT(3) + ], [ + AC_MSG_RESULT(0) + ]) + ]) + ]) + CFLAGS=$OLD_CFLAGS +]) + +fi + +AC_CHECK_SIZEOF(long) + +AC_MSG_CHECKING(for F_SETFD in fcntl.h) +AC_EGREP_CPP(yes, +[ +#define _GNU_SOURCE +#include <fcntl.h> +#ifdef F_SETFD +yes +#endif +], [ AC_DEFINE(HAVE_SETFD, 1, + [Define if F_SETFD is defined in <fcntl.h>]) + AC_MSG_RESULT(yes) ], AC_MSG_RESULT(no)) + +needsignal=no +haveselect=no +if test x$bwin32 != xtrue; then + AC_CHECK_FUNCS(select, [haveselect=yes], ) + if test "x$haveselect" = "xyes" ; then + needsignal=yes + fi +fi +AM_CONDITIONAL(SELECT_BACKEND, [test "x$haveselect" = "xyes"]) + +havepoll=no +AC_CHECK_FUNCS(poll, [havepoll=yes], ) +if test "x$havepoll" = "xyes" ; then + needsignal=yes +fi +AM_CONDITIONAL(POLL_BACKEND, [test "x$havepoll" = "xyes"]) + +havedevpoll=no +if test "x$ac_cv_header_sys_devpoll_h" = "xyes"; then + AC_DEFINE(HAVE_DEVPOLL, 1, + [Define if /dev/poll is available]) +fi +AM_CONDITIONAL(DEVPOLL_BACKEND, [test "x$ac_cv_header_sys_devpoll_h" = "xyes"]) + +havekqueue=no +if test "x$ac_cv_header_sys_event_h" = "xyes"; then + AC_CHECK_FUNCS(kqueue, [havekqueue=yes], ) + if test "x$havekqueue" = "xyes" ; then + AC_MSG_CHECKING(for working kqueue) + AC_TRY_RUN( +#include <sys/types.h> +#include <sys/time.h> +#include <sys/event.h> +#include <stdio.h> +#include <unistd.h> +#include <fcntl.h> + +int +main(int argc, char **argv) +{ + int kq; + int n; + int fd[[2]]; + struct kevent ev; + struct timespec ts; + char buf[[8000]]; + + if (pipe(fd) == -1) + exit(1); + if (fcntl(fd[[1]], F_SETFL, O_NONBLOCK) == -1) + exit(1); + + while ((n = write(fd[[1]], buf, sizeof(buf))) == sizeof(buf)) + ; + + if ((kq = kqueue()) == -1) + exit(1); + + memset(&ev, 0, sizeof(ev)); + ev.ident = fd[[1]]; + ev.filter = EVFILT_WRITE; + ev.flags = EV_ADD | EV_ENABLE; + n = kevent(kq, &ev, 1, NULL, 0, NULL); + if (n == -1) + exit(1); + + read(fd[[0]], buf, sizeof(buf)); + + ts.tv_sec = 0; + ts.tv_nsec = 0; + n = kevent(kq, NULL, 0, &ev, 1, &ts); + if (n == -1 || n == 0) + exit(1); + + exit(0); +}, [AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_WORKING_KQUEUE, 1, + [Define if kqueue works correctly with pipes]) + havekqueue=yes + ], AC_MSG_RESULT(no), AC_MSG_RESULT(no)) + fi +fi +AM_CONDITIONAL(KQUEUE_BACKEND, [test "x$havekqueue" = "xyes"]) + +haveepollsyscall=no +haveepoll=no +AC_CHECK_FUNCS(epoll_ctl, [haveepoll=yes], ) +if test "x$haveepoll" = "xyes" ; then + AC_DEFINE(HAVE_EPOLL, 1, + [Define if your system supports the epoll system calls]) + needsignal=yes +fi +if test "x$ac_cv_header_sys_epoll_h" = "xyes"; then + if test "x$haveepoll" = "xno" ; then + AC_MSG_CHECKING(for epoll system call) + AC_TRY_RUN( +#include <stdint.h> +#include <sys/param.h> +#include <sys/types.h> +#include <sys/syscall.h> +#include <sys/epoll.h> +#include <unistd.h> + +int +epoll_create(int size) +{ + return (syscall(__NR_epoll_create, size)); +} + +int +main(int argc, char **argv) +{ + int epfd; + + epfd = epoll_create(256); + exit (epfd == -1 ? 1 : 0); +}, [AC_MSG_RESULT(yes) + AC_DEFINE(HAVE_EPOLL, 1, + [Define if your system supports the epoll system calls]) + needsignal=yes + have_epoll=yes + AC_LIBOBJ(epoll_sub) + ], AC_MSG_RESULT(no), AC_MSG_RESULT(no)) + fi +fi +AM_CONDITIONAL(EPOLL_BACKEND, [test "x$haveepoll" = "xyes"]) + +haveeventports=no +AC_CHECK_FUNCS(port_create, [haveeventports=yes], ) +if test "x$haveeventports" = "xyes" ; then + AC_DEFINE(HAVE_EVENT_PORTS, 1, + [Define if your system supports event ports]) + needsignal=yes +fi +AM_CONDITIONAL(EVPORT_BACKEND, [test "x$haveeventports" = "xyes"]) + +if test "x$bwin32" = "xtrue"; then + needsignal=yes +fi + +AM_CONDITIONAL(SIGNAL_SUPPORT, [test "x$needsignal" = "xyes"]) + +AC_TYPE_PID_T +AC_TYPE_SIZE_T +AC_TYPE_SSIZE_T + +AC_CHECK_TYPES([uint64_t, uint32_t, uint16_t, uint8_t, uintptr_t], , , +[#ifdef HAVE_STDINT_H +#include <stdint.h> +#elif defined(HAVE_INTTYPES_H) +#include <inttypes.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif]) + +AC_CHECK_TYPES([fd_mask], , , +[#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_SYS_SELECT_H +#include <sys/select.h> +#endif]) + +AC_CHECK_SIZEOF(long long) +AC_CHECK_SIZEOF(long) +AC_CHECK_SIZEOF(int) +AC_CHECK_SIZEOF(short) +AC_CHECK_SIZEOF(size_t) +AC_CHECK_SIZEOF(void *) + +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 +#include <netinet/in.h> +#endif +#ifdef HAVE_NETINET_IN6_H +#include <netinet/in6.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef HAVE_NETDB_H +#include <netdb.h> +#endif +#ifdef WIN32 +#define WIN32_WINNT 0x400 +#define _WIN32_WINNT 0x400 +#define WIN32_LEAN_AND_MEAN +#if defined(_MSC_VER) && (_MSC_VER < 1300) +#include <winsock.h> +#else +#include <winsock2.h> +#include <ws2tcpip.h> +#endif +#endif +]) +AC_CHECK_MEMBERS([struct in6_addr.s6_addr32, struct in6_addr.s6_addr16, struct sockaddr_in.sin_len, struct sockaddr_in6.sin6_len, struct sockaddr_storage.ss_family, struct sockaddr_storage.__ss_family], , , +[#include <sys/types.h> +#ifdef HAVE_NETINET_IN_H +#include <netinet/in.h> +#endif +#ifdef HAVE_NETINET_IN6_H +#include <netinet/in6.h> +#endif +#ifdef HAVE_SYS_SOCKET_H +#include <sys/socket.h> +#endif +#ifdef WIN32 +#define WIN32_WINNT 0x400 +#define _WIN32_WINNT 0x400 +#define WIN32_LEAN_AND_MEAN +#if defined(_MSC_VER) && (_MSC_VER < 1300) +#include <winsock.h> +#else +#include <winsock2.h> +#include <ws2tcpip.h> +#endif +#endif +]) + +AC_MSG_CHECKING([for socklen_t]) +AC_TRY_COMPILE([ + #include <sys/types.h> + #include <sys/socket.h>], + [socklen_t x;], + AC_MSG_RESULT([yes]), + [AC_MSG_RESULT([no]) + AC_DEFINE(socklen_t, unsigned int, + [Define to unsigned int if you dont have it])] +) + +AC_MSG_CHECKING([whether our compiler supports __func__]) +AC_TRY_COMPILE([], + [ const char *cp = __func__; ], + AC_MSG_RESULT([yes]), + AC_MSG_RESULT([no]) + AC_MSG_CHECKING([whether our compiler supports __FUNCTION__]) + AC_TRY_COMPILE([], + [ const char *cp = __FUNCTION__; ], + AC_MSG_RESULT([yes]) + AC_DEFINE(__func__, __FUNCTION__, + [Define to appropriate substitue if compiler doesnt have __func__]), + AC_MSG_RESULT([no]) + AC_DEFINE(__func__, __FILE__, + [Define to appropriate substitue if compiler doesnt have __func__]))) + + +# check if we can compile with pthreads +have_pthreads=no +if test x$bwin32 != xtrue && test "$enable_thread_support" != "no"; then + ACX_PTHREAD([ + AC_DEFINE(HAVE_PTHREADS, 1, + [Define if we have pthreads on this system]) + have_pthreads=yes]) + CFLAGS="$CFLAGS $PTHREAD_CFLAGS" + AC_CHECK_SIZEOF(pthread_t, , + [AC_INCLUDES_DEFAULT() + #include <pthread.h> ] + ) +fi +AM_CONDITIONAL(PTHREADS, [test "$have_pthreads" != "no" && test "$enable_thread_support" != "no"]) + +# check if we should compile locking into the library +if test x$enable_thread_support = xno; then + AC_DEFINE(DISABLE_THREAD_SUPPORT, 1, + [Define if libevent should not be compiled with thread support]) +fi + +# check if we should hard-code the mm functions. +if test x$enable_malloc_replacement = xno; then + AC_DEFINE(DISABLE_MM_REPLACEMENT, 1, + [Define if libevent should not allow replacing the mm functions]) +fi + +# check if we should hard-code debugging out +if test x$enable_debug_mode = xno; then + AC_DEFINE(DISABLE_DEBUG_MODE, 1, + [Define if libevent should build without support for a debug mode]) +fi + +# check if we have and should use openssl +AM_CONDITIONAL(OPENSSL, [test "$enable_openssl" != "no" && test "$have_openssl" = "yes"]) + +# 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$enable_gcc_warnings = xyes && test "$GCC" = "yes"; then + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ +#if !defined(__GNUC__) || (__GNUC__ < 4) +#error +#endif])], have_gcc4=yes, have_gcc4=no) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ +#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 2) +#error +#endif])], have_gcc42=yes, have_gcc42=no) + + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [ +#if !defined(__GNUC__) || (__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 5) +#error +#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$have_gcc4 = xyes ; then + # These warnings break gcc 3.3.5 and work on gcc 4.0.2 + CFLAGS="$CFLAGS -Winit-self -Wmissing-field-initializers -Wdeclaration-after-statement" + #CFLAGS="$CFLAGS -Wold-style-definition" + fi + + if test x$have_gcc42 = xyes ; then + # These warnings break gcc 4.0.2 and work on gcc 4.2 + 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) |