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-rw-r--r--replace/dlfcn.m431
1 files changed, 31 insertions, 0 deletions
diff --git a/replace/dlfcn.m4 b/replace/dlfcn.m4
new file mode 100644
index 0000000000..42f56f26be
--- /dev/null
+++ b/replace/dlfcn.m4
@@ -0,0 +1,31 @@
+dnl dummies provided by dlfcn.c if not available
+save_LIBS="$LIBS"
+LIBS=""
+
+libreplace_cv_dlfcn=no
+AC_SEARCH_LIBS(dlopen, dl)
+
+AC_CHECK_HEADERS(dlfcn.h)
+AC_CHECK_FUNCS([dlopen dlsym dlerror dlclose],[],[libreplace_cv_dlfcn=yes])
+
+libreplace_cv_shl=no
+AC_SEARCH_LIBS(shl_load, sl)
+AC_CHECK_HEADERS(dl.h)
+AC_CHECK_FUNCS([shl_load shl_unload shl_findsym],[],[libreplace_cv_shl=yes])
+
+AC_VERIFY_C_PROTOTYPE([void *dlopen(const char* filename, unsigned int flags)],
+ [
+ return 0;
+ ],[
+ AC_DEFINE(DLOPEN_TAKES_UNSIGNED_FLAGS, 1, [Whether dlopen takes unsigned int flags])
+ ],[],[
+ #include <dlfcn.h>
+ ])
+
+if test x"${libreplace_cv_dlfcn}" = x"yes";then
+ LIBREPLACEOBJ="${LIBREPLACEOBJ} dlfcn.o"
+fi
+
+LIBDL="$LIBS"
+AC_SUBST(LIBDL)
+LIBS="$save_LIBS"