[PATCH libdrm] configure.ac: Allow explicit enabling of cunit tests

[Jussi Kukkonen]

Add --with-cunit to make it easier to do reproducible builds. Default
is still to probe cunit and build opportunistically.

Signed-off-by: Jussi Kukkonen <jussi.kukkonen at intel.com>
---
 configure.ac | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index e3048c7..918d21d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -137,6 +137,12 @@ AC_ARG_ENABLE(install-test-programs,
 		  [Install test programs (default: no)]),
 		  [INSTALL_TESTS=$enableval], [INSTALL_TESTS=no])
 
+AC_ARG_WITH([cunit],
+            [AS_HELP_STRING([--with-cunit],
+                            [Build tests that use cunit (default: auto)])],
+            [],
+            [with_cunit=auto])
+
 dnl ===========================================================================
 dnl check compiler flags
 AC_DEFUN([LIBDRM_CC_TRY_FLAG], [
@@ -372,7 +378,7 @@ if test "x$RADEON" = xyes; then
 	AC_DEFINE(HAVE_RADEON, 1, [Have radeon support])
 fi
 
-if test "x$AMDGPU" != xno; then
+if test "x$with_cunit" != xno -a "x$AMDGPU" != xno; then
 	# Detect cunit library
 	PKG_CHECK_MODULES([CUNIT], [cunit >= 2.1], [have_cunit=yes], [have_cunit=no])
 	# If pkg-config does not find cunit, check it using AC_CHECK_LIB.  We
@@ -399,7 +406,11 @@ if test "x$AMDGPU" = xyes; then
 	AC_DEFINE(HAVE_CUNIT, [test "x$have_cunit" != "xno"], [Enable CUNIT Have amdgpu support])
 
 	if test "x$have_cunit" = "xno"; then
-		AC_MSG_WARN([Could not find cunit library. Disabling amdgpu tests])
+		if test "x$with_cunit" = "xyes"; then
+			AC_MSG_ERROR([Could not find cunit library but --with-cunit was given])
+		elif test "x$with_cunit" = "xauto"; then
+			AC_MSG_WARN([Could not find cunit library. Disabling amdgpu tests])
+		fi
 	fi
 fi
 
-- 
2.1.4