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Diffstat (limited to 'thttpd/files/acinclude.m4')
| -rw-r--r-- | thttpd/files/acinclude.m4 | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/thttpd/files/acinclude.m4 b/thttpd/files/acinclude.m4 index e69de29bb2..56e4bcb89e 100644 --- a/thttpd/files/acinclude.m4 +++ b/thttpd/files/acinclude.m4 @@ -0,0 +1,188 @@ +dnl +dnl Improved version of AC_CHECK_LIB +dnl +dnl Thanks to John Hawkinson (jhawk@mit.edu) +dnl +dnl usage: +dnl +dnl AC_LBL_CHECK_LIB(LIBRARY, FUNCTION [, ACTION-IF-FOUND [, +dnl ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]]) +dnl +dnl results: +dnl +dnl LIBS +dnl + +define(AC_LBL_CHECK_LIB, +[AC_MSG_CHECKING([for $2 in -l$1]) +dnl Use a cache variable name containing both the library and function name, +dnl because the test really is for library $1 defining function $2, not +dnl just for library $1. Separate tests with the same $1 and different $2's +dnl may have different results. +ac_lib_var=`echo $1['_']$2['_']$5 | sed 'y%./+- %__p__%'` +AC_CACHE_VAL(ac_cv_lbl_lib_$ac_lib_var, +[ac_save_LIBS="$LIBS" +LIBS="-l$1 $5 $LIBS" +AC_TRY_LINK(dnl +ifelse([$2], [main], , dnl Avoid conflicting decl of main. +[/* Override any gcc2 internal prototype to avoid an error. */ +]AC_LANG_CASE(c++, [#ifdef __cplusplus +extern "C" +#endif +])dnl +[/* We use char because int might match the return type of a gcc2 + builtin and then its argument prototype would still apply. */ +char $2(); +]), + [$2()], + eval "ac_cv_lbl_lib_$ac_lib_var=yes", + eval "ac_cv_lbl_lib_$ac_lib_var=no") +LIBS="$ac_save_LIBS" +])dnl +if eval "test \"`echo '$ac_cv_lbl_lib_'$ac_lib_var`\" = yes"; then + AC_MSG_RESULT(yes) + ifelse([$3], , +[changequote(, )dnl + ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \ + -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'` +changequote([, ])dnl + AC_DEFINE_UNQUOTED($ac_tr_lib) + LIBS="-l$1 $LIBS" +], [$3]) +else + AC_MSG_RESULT(no) +ifelse([$4], , , [$4 +])dnl +fi +]) + +dnl +dnl AC_LBL_LIBRARY_NET +dnl +dnl This test is for network applications that need socket() and +dnl gethostbyname() -ish functions. Under Solaris, those applications +dnl need to link with "-lsocket -lnsl". Under IRIX, they need to link +dnl with "-lnsl" but should *not* link with "-lsocket" because +dnl libsocket.a breaks a number of things (for instance: +dnl gethostbyname() under IRIX 5.2, and snoop sockets under most +dnl versions of IRIX). +dnl +dnl Unfortunately, many application developers are not aware of this, +dnl and mistakenly write tests that cause -lsocket to be used under +dnl IRIX. It is also easy to write tests that cause -lnsl to be used +dnl under operating systems where neither are necessary (or useful), +dnl such as SunOS 4.1.4, which uses -lnsl for TLI. +dnl +dnl This test exists so that every application developer does not test +dnl this in a different, and subtly broken fashion. + +dnl It has been argued that this test should be broken up into two +dnl seperate tests, one for the resolver libraries, and one for the +dnl libraries necessary for using Sockets API. Unfortunately, the two +dnl are carefully intertwined and allowing the autoconf user to use +dnl them independantly potentially results in unfortunate ordering +dnl dependancies -- as such, such component macros would have to +dnl carefully use indirection and be aware if the other components were +dnl executed. Since other autoconf macros do not go to this trouble, +dnl and almost no applications use sockets without the resolver, this +dnl complexity has not been implemented. +dnl +dnl The check for libresolv is in case you are attempting to link +dnl statically and happen to have a libresolv.a lying around (and no +dnl libnsl.a). +dnl +AC_DEFUN([AC_LBL_LIBRARY_NET], [ + # Most operating systems have gethostbyname() in the default searched + # libraries (i.e. libc): + AC_CHECK_FUNC(gethostbyname, , + # Some OSes (eg. Solaris) place it in libnsl: + AC_LBL_CHECK_LIB(nsl, gethostbyname, , + # Some strange OSes (SINIX) have it in libsocket: + AC_LBL_CHECK_LIB(socket, gethostbyname, , + # Unfortunately libsocket sometimes depends on libnsl. + # AC_CHECK_LIB's API is essentially broken so the + # following ugliness is necessary: + AC_LBL_CHECK_LIB(socket, gethostbyname, + LIBS="-lsocket -lnsl $LIBS", + AC_CHECK_LIB(resolv, gethostbyname), + -lnsl)))) + AC_CHECK_FUNC(socket, , AC_CHECK_LIB(socket, socket, , + AC_LBL_CHECK_LIB(socket, socket, LIBS="-lsocket -lnsl $LIBS", , + -lnsl))) + # DLPI needs putmsg under HPUX so test for -lstr while we're at it + AC_CHECK_LIB(str, putmsg) + ]) + +dnl +dnl Checks to see if struct tm has the BSD tm_gmtoff member +dnl +dnl usage: +dnl +dnl AC_ACME_TM_GMTOFF +dnl +dnl results: +dnl +dnl HAVE_TM_GMTOFF (defined) +dnl +AC_DEFUN([AC_ACME_TM_GMTOFF], + [AC_MSG_CHECKING(if struct tm has tm_gmtoff member) + AC_CACHE_VAL(ac_cv_acme_tm_has_tm_gmtoff, + AC_TRY_COMPILE([ +# include <sys/types.h> +# include <time.h>], + [u_int i = sizeof(((struct tm *)0)->tm_gmtoff)], + ac_cv_acme_tm_has_tm_gmtoff=yes, + ac_cv_acme_tm_has_tm_gmtoff=no)) + AC_MSG_RESULT($ac_cv_acme_tm_has_tm_gmtoff) + if test $ac_cv_acme_tm_has_tm_gmtoff = yes ; then + AC_DEFINE(HAVE_TM_GMTOFF) + fi]) + +dnl +dnl Checks to see if int64_t exists +dnl +dnl usage: +dnl +dnl AC_ACME_INT64T +dnl +dnl results: +dnl +dnl HAVE_INT64T (defined) +dnl +AC_DEFUN([AC_ACME_INT64T], + [AC_MSG_CHECKING(if int64_t exists) + AC_CACHE_VAL(ac_cv_acme_int64_t, + AC_TRY_COMPILE([ +# include <sys/types.h>], + [int64_t i64], + ac_cv_acme_int64_t=yes, + ac_cv_acme_int64_t=no)) + AC_MSG_RESULT($ac_cv_acme_int64_t) + if test $ac_cv_acme_int64_t = yes ; then + AC_DEFINE(HAVE_INT64T) + fi]) + +dnl +dnl Checks to see if socklen_t exists +dnl +dnl usage: +dnl +dnl AC_ACME_SOCKLENT +dnl +dnl results: +dnl +dnl HAVE_SOCKLENT (defined) +dnl +AC_DEFUN([AC_ACME_SOCKLENT], + [AC_MSG_CHECKING(if socklen_t exists) + AC_CACHE_VAL(ac_cv_acme_socklen_t, + AC_TRY_COMPILE([ +# include <sys/types.h> +# include <sys/socket.h>], + [socklen_t slen], + ac_cv_acme_socklen_t=yes, + ac_cv_acme_socklen_t=no)) + AC_MSG_RESULT($ac_cv_acme_socklen_t) + if test $ac_cv_acme_socklen_t = yes ; then + AC_DEFINE(HAVE_SOCKLENT) + fi]) |