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Diffstat (limited to 'openvpn/acinclude.m4')
| -rw-r--r-- | openvpn/acinclude.m4 | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/openvpn/acinclude.m4 b/openvpn/acinclude.m4 deleted file mode 100644 index f164bac..0000000 --- a/openvpn/acinclude.m4 +++ /dev/null @@ -1,346 +0,0 @@ -dnl Special Autoconf Macros for OpenVPN - -dnl OPENVPN_ADD_LIBS(LIB) -AC_DEFUN([OPENVPN_ADD_LIBS], [ - LIBS="$1 $LIBS" -]) - -dnl @synopsis AX_EMPTY_ARRAY -dnl -dnl Define EMPTY_ARRAY_SIZE to be either "0" -dnl or "" depending on which syntax the compiler -dnl prefers for empty arrays in structs. -dnl -dnl @version -dnl @author James Yonan <jim@yonan.net> - - -AC_DEFUN([AX_EMPTY_ARRAY], [ - AC_MSG_RESULT([checking for C compiler empty array support]) - AC_COMPILE_IFELSE( - [ - struct { int foo; int bar[[0]]; } mystruct; - ], [ - AC_DEFINE_UNQUOTED(EMPTY_ARRAY_SIZE, 0, [Dimension to use for empty array declaration]) - ], [ - AC_COMPILE_IFELSE( - [ - struct { int foo; int bar[[]]; } mystruct; - ], [ - AC_DEFINE_UNQUOTED(EMPTY_ARRAY_SIZE,, [Dimension to use for empty array declaration]) - ], [ - AC_MSG_ERROR([C compiler is unable to creaty empty arrays]) - ]) - ]) - ] -) - -dnl @synopsis AX_CPP_VARARG_MACRO_GCC -dnl -dnl Test if the preprocessor understands GNU GCC-style vararg macros. -dnl If it does, defines HAVE_CPP_VARARG_MACRO_GCC to 1. -dnl -dnl @version -dnl @author James Yonan <jim@yonan.net>, Matthias Andree <matthias.andree@web.de> -AC_DEFUN([AX_CPP_VARARG_MACRO_GCC], [dnl - AS_VAR_PUSHDEF([VAR],[ax_cv_cpp_vararg_macro_gcc])dnl - AC_CACHE_CHECK([for GNU GCC vararg macro support], VAR, [dnl - AC_COMPILE_IFELSE([ - #define macro(a, b...) func(a, b) - int func(int a, int b, int c); - int test() { return macro(1, 2, 3); } - ], [ VAR=yes ], [VAR=no])]) - if test $VAR = yes ; then - AC_DEFINE([HAVE_CPP_VARARG_MACRO_GCC], 1, - [Define to 1 if your compiler supports GNU GCC-style variadic macros]) - fi - AS_VAR_POPDEF([VAR])dnl -]) - -dnl @synopsis AX_CPP_VARARG_MACRO_ISO -dnl -dnl Test if the preprocessor understands ISO C 1999 vararg macros. -dnl If it does, defines HAVE_CPP_VARARG_MACRO_ISO to 1. -dnl -dnl @version -dnl @author James Yonan <jim@yonan.net>, Matthias Andree <matthias.andree@web.de> -AC_DEFUN([AX_CPP_VARARG_MACRO_ISO], [dnl - AS_VAR_PUSHDEF([VAR],[ax_cv_cpp_vararg_macro_iso])dnl - AC_CACHE_CHECK([for ISO C 1999 vararg macro support], VAR, [dnl - AC_COMPILE_IFELSE([ -#define macro(a, ...) func(a, __VA_ARGS__) - int func(int a, int b, int c); - int test() { return macro(1, 2, 3); } - ], [ VAR=yes ], [VAR=no])]) - if test $VAR = yes ; then - AC_DEFINE([HAVE_CPP_VARARG_MACRO_ISO], 1, - [Define to 1 if your compiler supports ISO C99 variadic macros]) - fi - AS_VAR_POPDEF([VAR])dnl -]) - -dnl -- The following is taken from curl's acinclude.m4 -- -dnl Check for socklen_t: historically on BSD it is an int, and in -dnl POSIX 1g it is a type of its own, but some platforms use different -dnl types for the argument to getsockopt, getpeername, etc. So we -dnl have to test to find something that will work. -AC_DEFUN([TYPE_SOCKLEN_T], -[ - AC_CHECK_TYPE([socklen_t], ,[ - AC_MSG_CHECKING([for socklen_t equivalent]) - AC_CACHE_VAL([curl_cv_socklen_t_equiv], - [ - # Systems have either "struct sockaddr *" or - # "void *" as the second argument to getpeername - curl_cv_socklen_t_equiv= - for arg2 in "struct sockaddr" void; do - for t in int size_t unsigned long "unsigned long"; do - AC_TRY_COMPILE([ - #include <sys/types.h> - #include <sys/socket.h> - - int getpeername (int, $arg2 *, $t *); - ],[ - $t len; - getpeername(0,0,&len); - ],[ - curl_cv_socklen_t_equiv="$t" - break - ]) - done - done - - if test "x$curl_cv_socklen_t_equiv" = x; then - AC_MSG_ERROR([Cannot find a type to use in place of socklen_t]) - fi - ]) - AC_MSG_RESULT($curl_cv_socklen_t_equiv) - AC_DEFINE_UNQUOTED(socklen_t, $curl_cv_socklen_t_equiv, - [type to use in place of socklen_t if not defined])], - [#include <sys/types.h> -#include <sys/socket.h>]) -]) - -dnl @synopsis ACX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]]) -dnl -dnl This macro figures out how to build C programs using POSIX -dnl threads. It sets the PTHREAD_LIBS output variable to the threads -dnl library and linker flags, and the PTHREAD_CFLAGS output variable -dnl to any special C compiler flags that are needed. (The user can also -dnl force certain compiler flags/libs to be tested by setting these -dnl environment variables.) -dnl -dnl Also sets PTHREAD_CC to any special C compiler that is needed for -dnl multi-threaded programs (defaults to the value of CC otherwise). -dnl (This is necessary on AIX to use the special cc_r compiler alias.) -dnl -dnl If you are only building threads programs, you may wish to -dnl use these variables in your default LIBS, CFLAGS, and CC: -dnl -dnl LIBS="$PTHREAD_LIBS $LIBS" -dnl CFLAGS="$CFLAGS $PTHREAD_CFLAGS" -dnl CC="$PTHREAD_CC" -dnl -dnl In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute -dnl constant has a nonstandard name, defines PTHREAD_CREATE_JOINABLE -dnl to that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX). -dnl -dnl ACTION-IF-FOUND is a list of shell commands to run if a threads -dnl library is found, and ACTION-IF-NOT-FOUND is a list of commands -dnl to run it if it is not found. If ACTION-IF-FOUND is not specified, -dnl the default action will define HAVE_PTHREAD. -dnl -dnl Please let the authors know if this macro fails on any platform, -dnl or if you have any other suggestions or comments. This macro was -dnl based on work by SGJ on autoconf scripts for FFTW (www.fftw.org) -dnl (with help from M. Frigo), as well as ac_pthread and hb_pthread -dnl macros posted by AFC to the autoconf macro repository. We are also -dnl grateful for the helpful feedback of numerous users. -dnl -dnl @author Steven G. Johnson <stevenj@alum.mit.edu> and Alejandro Forero Cuervo <bachue@bachue.com> - -AC_DEFUN([ACX_PTHREAD], [ -AC_REQUIRE([AC_CANONICAL_HOST]) -acx_pthread_ok=no - -# We used to check for pthread.h first, but this fails if pthread.h -# requires special compiler flags (e.g. on True64 or Sequent). -# It gets checked for in the link test anyway. - -# First of all, check if the user has set any of the PTHREAD_LIBS, -# etcetera environment variables, and if threads linking works using -# them: -if test x"$PTHREAD_LIBS$PTHREAD_CFLAGS" != x; then - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $PTHREAD_CFLAGS" - save_LIBS="$LIBS" - LIBS="$PTHREAD_LIBS $LIBS" - AC_MSG_CHECKING([for pthread_join in LIBS=$PTHREAD_LIBS with CFLAGS=$PTHREAD_CFLAGS]) - AC_TRY_LINK_FUNC(pthread_join, acx_pthread_ok=yes) - AC_MSG_RESULT($acx_pthread_ok) - if test x"$acx_pthread_ok" = xno; then - PTHREAD_LIBS="" - PTHREAD_CFLAGS="" - fi - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" -fi - -# We must check for the threads library under a number of different -# names; the ordering is very important because some systems -# (e.g. DEC) have both -lpthread and -lpthreads, where one of the -# libraries is broken (non-POSIX). - -# Create a list of thread flags to try. Items starting with a "-" are -# C compiler flags, and other items are library names, except for "none" -# which indicates that we try without any flags at all. - -acx_pthread_flags="pthreads none -Kthread -kthread lthread -pthread -pthreads -mthreads pthread --thread-safe -mt" - -# The ordering *is* (sometimes) important. Some notes on the -# individual items follow: - -# pthreads: AIX (must check this before -lpthread) -# none: in case threads are in libc; should be tried before -Kthread and -# other compiler flags to prevent continual compiler warnings -# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h) -# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able) -# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread) -# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads) -# -pthreads: Solaris/gcc -# -mthreads: Mingw32/gcc, Lynx/gcc -# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it -# doesn't hurt to check since this sometimes defines pthreads too; -# also defines -D_REENTRANT) -# pthread: Linux, etcetera -# --thread-safe: KAI C++ - -case "$target" in - *solaris*) - - # On Solaris (at least, for some versions), libc contains stubbed - # (non-functional) versions of the pthreads routines, so link-based - # tests will erroneously succeed. (We need to link with -pthread or - # -lpthread.) (The stubs are missing pthread_cleanup_push, or rather - # a function called by this macro, so we could check for that, but - # who knows whether they'll stub that too in a future libc.) So, - # we'll just look for -pthreads and -lpthread first: - - acx_pthread_flags="-pthread -pthreads pthread -mt $acx_pthread_flags" - ;; -esac - -if test x"$acx_pthread_ok" = xno; then -for flag in $acx_pthread_flags; do - - case $flag in - none) - AC_MSG_CHECKING([whether pthreads work without any flags]) - ;; - - -*) - AC_MSG_CHECKING([whether pthreads work with $flag]) - PTHREAD_CFLAGS="$flag" - ;; - - *) - AC_MSG_CHECKING([for the pthreads library -l$flag]) - PTHREAD_LIBS="-l$flag" - ;; - esac - - save_LIBS="$LIBS" - save_CFLAGS="$CFLAGS" - LIBS="$PTHREAD_LIBS $LIBS" - CFLAGS="$CFLAGS $PTHREAD_CFLAGS" - - # Check for various functions. We must include pthread.h, - # since some functions may be macros. (On the Sequent, we - # need a special flag -Kthread to make this header compile.) - # We check for pthread_join because it is in -lpthread on IRIX - # while pthread_create is in libc. We check for pthread_attr_init - # due to DEC craziness with -lpthreads. We check for - # pthread_cleanup_push because it is one of the few pthread - # functions on Solaris that doesn't have a non-functional libc stub. - # We try pthread_create on general principles. - AC_TRY_LINK([#include <pthread.h>], - [pthread_t th; pthread_join(th, 0); - pthread_attr_init(0); pthread_cleanup_push(0, 0); - pthread_create(0,0,0,0); pthread_cleanup_pop(0); ], - [acx_pthread_ok=yes]) - - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" - - AC_MSG_RESULT($acx_pthread_ok) - if test "x$acx_pthread_ok" = xyes; then - break; - fi - - PTHREAD_LIBS="" - PTHREAD_CFLAGS="" -done -fi - -# Various other checks: -if test "x$acx_pthread_ok" = xyes; then - save_LIBS="$LIBS" - LIBS="$PTHREAD_LIBS $LIBS" - save_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS $PTHREAD_CFLAGS" - - # Detect AIX lossage: threads are created detached by default - # and the JOINABLE attribute has a nonstandard name (UNDETACHED). - AC_MSG_CHECKING([for joinable pthread attribute]) - AC_TRY_LINK([#include <pthread.h>], - [int attr=PTHREAD_CREATE_JOINABLE;], - ok=PTHREAD_CREATE_JOINABLE, ok=unknown) - if test x"$ok" = xunknown; then - AC_TRY_LINK([#include <pthread.h>], - [int attr=PTHREAD_CREATE_UNDETACHED;], - ok=PTHREAD_CREATE_UNDETACHED, ok=unknown) - fi - if test x"$ok" != xPTHREAD_CREATE_JOINABLE; then - AC_DEFINE(PTHREAD_CREATE_JOINABLE, $ok, - [Define to the necessary symbol if this constant - uses a non-standard name on your system.]) - fi - AC_MSG_RESULT(${ok}) - if test x"$ok" = xunknown; then - AC_MSG_WARN([we do not know how to create joinable pthreads]) - fi - - AC_MSG_CHECKING([if more special flags are required for pthreads]) - flag=no - case "$target" in - *-aix* | *-freebsd*) flag="-D_THREAD_SAFE";; - *solaris* | alpha*-osf* | *linux*) flag="-D_REENTRANT";; - esac - AC_MSG_RESULT(${flag}) - if test "x$flag" != xno; then - PTHREAD_CFLAGS="$flag $PTHREAD_CFLAGS" - fi - - LIBS="$save_LIBS" - CFLAGS="$save_CFLAGS" - - # More AIX lossage: must compile with cc_r - AC_CHECK_PROG(PTHREAD_CC, cc_r, cc_r, ${CC}) -else - PTHREAD_CC="$CC" -fi - -AC_SUBST(PTHREAD_LIBS) -AC_SUBST(PTHREAD_CFLAGS) -AC_SUBST(PTHREAD_CC) - -# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND: -if test x"$acx_pthread_ok" = xyes; then - ifelse([$1],,AC_DEFINE(HAVE_PTHREAD,1,[Define if you have POSIX threads libraries and header files.]),[$1]) - : -else - acx_pthread_ok=no - $2 -fi - -])dnl ACX_PTHREAD |