initial import of gmodule.

[platform/upstream/glib.git] / configure.in

diff --git a/configure.in b/configure.in
index 76ad642..b9a4a20 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -222,4 +222,87 @@ if test $gtk_ok = no; then
 fi
 AC_MSG_RESULT($gtk_ok)
 
-AC_OUTPUT([Makefile glib-config],[chmod +x glib-config])
+dnl ***********************
+dnl *** g_module checks ***
+dnl ***********************
+G_MODULE_LIBS=
+G_MODULE_LDFLAGS=
+G_MODULE_IMPL=
+G_MODULE_NEED_USCORE=0
+G_MODULE_HAVE_DLERROR=0
+dnl *** dlopen() in system libraries
+if test -z "$G_MODULE_IMPL"; then
+       AC_CHECK_FUNC(dlopen,
+               G_MODULE_IMPL=G_MODULE_IMPL_DL
+       ,)
+fi
+dnl *** dlopen() in libdl
+if test -z "$G_MODULE_IMPL"; then
+       AC_CHECK_LIB(dl, dlopen,
+               G_MODULE_LIBS=-ldl
+               G_MODULE_IMPL=G_MODULE_IMPL_DL
+       ,)
+fi
+dnl *** shl_load() in libdld (HP-UX)
+if test -z "$G_MODULE_IMPL"; then
+       G_MODULE_LDFLAGS='-Wl,-E'
+       AC_CHECK_LIB(dld, shl_load,
+               G_MODULE_LIBS=-ldld
+               G_MODULE_IMPL=G_MODULE_IMPL_DLD
+       ,)
+fi
+dnl *** additional checks for G_MODULE_IMPL_DL
+if test "$G_MODULE_IMPL" = "G_MODULE_IMPL_DL"; then
+       if test -d /usr/include/linux; then
+               G_MODULE_LDFLAGS='-rdynamic'
+       fi
+       LIBS_orig="$LIBS"
+       LDFLAGS_orig="$LDFLAGS"
+       LIBS="$LIBS $G_MODULE_LIBS"
+       LDFLAGS="$LDFLAGS $G_MODULE_LDFLAGS"
+dnl *** check whether we need preceeding underscores
+       AC_MSG_CHECKING(for preceeding underscore in symbols)
+       AC_CACHE_VAL(glib_cv_uscore,[
+               AC_TRY_RUN([
+               #include <dlfcn.h>
+               int glib_underscore_test (void) { return 42; }
+               int main() {
+                 void *f1 = (void*)0, *f2 = (void*)0, *handle;
+                 handle = dlopen ((void*)0, 0);
+                 if (handle) {
+                   f1 = dlsym (handle, "glib_underscore_test");
+                   f2 = dlsym (handle, "_glib_underscore_test");
+                 } return !(f2 && !f1);
+               }],
+                       glib_cv_uscore=yes
+                       G_MODULE_NEED_USCORE=1
+               ,
+                       glib_cv_uscore=no
+                       G_MODULE_NEED_USCORE=0
+               ,)
+       ])
+       AC_MSG_RESULT($glib_cv_uscore)
+       LDFLAGS="$LDFLAGS_orig"
+dnl *** check for having dlerror()
+       AC_CHECK_FUNC(dlerror,
+               G_MODULE_HAVE_DLERROR=1,
+               G_MODULE_HAVE_DLERROR=0)
+       LIBS="$LIBS_orig"
+fi
+dnl *** done, have e got an implementation?
+if test -z "$G_MODULE_IMPL"; then
+       G_MODULE_IMPL=0
+fi
+AC_SUBST(G_MODULE_IMPL)
+AC_SUBST(G_MODULE_LIBS)
+AC_SUBST(G_MODULE_LDFLAGS)
+AC_SUBST(G_MODULE_HAVE_DLERROR)
+AC_SUBST(G_MODULE_NEED_USCORE)
+
+
+AC_OUTPUT([
+Makefile
+glib-config
+gmodule/gmoduleconf.h
+gmodule/Makefile
+],[chmod +x glib-config])