util: Add piglit_source_dir()

This function reads the environment variable PIGLIT_SOURCE_DIR, and
reports failure if the function is undefined. The intention is that tests
should use to construct the path to any needed data files.

Signed-off-by: Chad Versace <chad.versace@linux.intel.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/util/piglit-util.c b/tests/util/piglit-util.c
index f6c2ba02e..f01ff5e3a 100644
--- a/tests/util/piglit-util.c
+++ b/tests/util/piglit-util.c
@@ -334,3 +334,16 @@ char *piglit_load_text_file(const char *file_name, unsigned *size)
 	return text;
 #endif
 }
+
+const char*
+piglit_source_dir(void)
+{
+
+    const char *s = getenv("PIGLIT_SOURCE_DIR");
+
+    if (s == NULL) {
+        printf("error: env var PIGLIT_SOURCE_DIR is undefined\n");
+        piglit_report_result(PIGLIT_FAIL);
+    }
+
+    return s;