1 files changed, 15 insertions, 0 deletions
diff --git a/src/external/libcares.m4 b/src/external/libcares.m4
new file mode 100644
index 0000000..0a764d3
--- /dev/null
+++ b/src/external/libcares.m4
@@ -0,0 +1,15 @@
+AC_SUBST(CARES_LIBS)
+AC_SUBST(CARES_CFLAGS)
+
+PKG_CHECK_MODULES([CARES], [libcares], [found_libcares=yes], [found_libcares=no])
+
+SSS_AC_EXPAND_LIB_DIR()
+AS_IF([test x"$found_libcares" != xyes],
+    [AC_CHECK_HEADERS([ares.h],
+        [AC_CHECK_LIB([cares],
+                      [ares_init],
+                      [CARES_LIBS="-L$sss_extra_libdir -lcares"],
+                      [AC_MSG_ERROR([No usable c-ares library found])],
+                      [-L$sss_extra_libdir])],
+        [AC_MSG_ERROR([c-ares header files are not installed])])]
+)