+dnl ** sometimes RTLD_NEXT is hidden in #ifdefs we really don't wan to set
+AC_MSG_CHECKING(for RTLD_NEXT from dlfcn.h)
+AC_EGREP_CPP(yes,
+[
+ #include <dlfcn.h>
+ #ifdef RTLD_NEXT
+ yes
+ #endif
+], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_RTLDNEXT)
+ HaveRtldNext=YES
+], [
+ AC_MSG_RESULT(no)
+ HaveRtldNext=NO
+ ])
+AC_SUBST(HaveRtldNext)
+
+dnl ** RTLD_LOCAL isn't available on cygwin or openbsd
+AC_MSG_CHECKING(for RTLD_LOCAL from dlfcn.h)
+AC_EGREP_CPP(yes,
+[
+ #include <dlfcn.h>
+ #ifdef RTLD_LOCAL
+ yes
+ #endif
+], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_RTLDLOCAL)
+ HaveRtldLocal=YES
+], [
+ AC_MSG_RESULT(no)
+ HaveRtldLocal=NO
+ ])
+AC_SUBST(HaveRtldLocal)
+
+dnl ** RTLD_GLOBAL isn't available on openbsd
+AC_MSG_CHECKING(for RTLD_GLOBAL from dlfcn.h)
+AC_EGREP_CPP(yes,
+[
+ #include <dlfcn.h>
+ #ifdef RTLD_GLOBAL
+ yes
+ #endif
+], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_RTLDGLOBAL)
+ HaveRtldGlobal=YES
+], [
+ AC_MSG_RESULT(no)
+ HaveRtldGlobal=NO
+ ])
+AC_SUBST(HaveRtldGlobal)
+
+dnl ** RTLD_NOW isn't available on openbsd
+AC_MSG_CHECKING(for RTLD_NOW from dlfcn.h)
+AC_EGREP_CPP(yes,
+[
+ #include <dlfcn.h>
+ #ifdef RTLD_NOW
+ yes
+ #endif
+], [
+ AC_MSG_RESULT(yes)
+ AC_DEFINE(HAVE_RTLDNOW)
+ HaveRtldNow=YES
+], [
+ AC_MSG_RESULT(no)
+ HaveRtldNow=NO
+ ])
+AC_SUBST(HaveRtldNow)
+