test1521: fix out-of-tree builds, broken with 467da3af

The test.h file is no longer in the same directory as the source file,
so that directory needs to be added to the include path.

Fixes #1627
Closes #1628

diff --git a/tests/libtest/Makefile.inc b/tests/libtest/Makefile.inc
index 05a81d3c0d83d3de5a3b2204657dd8b10c41e61f..2a8dfc21685f01f31729908b5debcee1cf1a7ec0 100644 (file)
--- a/tests/libtest/Makefile.inc
+++ b/tests/libtest/Makefile.inc
@@ -370,7 +370,7 @@ lib1520_SOURCES = lib1520.c $(SUPPORTFILES)
 lib1520_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1520
 
 lib1521_SOURCES = lib1521.c $(SUPPORTFILES)
-lib1521_CPPFLAGS = $(AM_CPPFLAGS)
+lib1521_CPPFLAGS = $(AM_CPPFLAGS) -I$(srcdir)
 
 lib1525_SOURCES = lib1525.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1525_LDADD = $(TESTUTIL_LIBS)