protoc: simplify configure check

[collectd.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index f6b9f5e..f9802ce 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -57,12 +57,16 @@ AC_PROG_YACC
 PKG_PROG_PKG_CONFIG
 
 AC_CHECK_PROG([have_protoc_c], [protoc-c], [yes], [no])
-AC_CHECK_HEADERS([google/protobuf-c/protobuf-c.h],
-                 [have_protobuf_c_h="yes"],
-                 [have_protobuf_c_h="no"])
-if test "x$have_protoc_c" = "xyes" && test "x$have_protobuf_c_h" != "xyes"
+if test "x$have_protoc_c" = "xno"
 then
-       have_protoc_c="no (unable to find <google/protobuf-c/protobuf-c.h>)"
+       have_protoc_c="no (protoc-c compiler not found)"
+fi
+
+if test "X$have_protoc_c" = "xyes"
+then
+       AC_CHECK_HEADERS([google/protobuf-c/protobuf-c.h],
+                        []
+                        [have_protoc_c="no (<google/protobuf-c/protobuf-c.h> not found)"])
 fi
 AM_CONDITIONAL(HAVE_PROTOC_C, test "x$have_protoc_c" = "xyes")