Bug#946294: clutter-1.0: Please make autopkgtests cross-test-friendly

[Steve Langasek]

Package: clutter-1.0
Version: 1.26.2+dfsg-12
Followup-For: Bug #946294
User: ubuntu-devel at lists.ubuntu.com
Usertags: origin-ubuntu focal ubuntu-patch

> I've verified that the attached patch lets the tests successfully build
> (and run) i386 tests on an amd64 host.

Sorry, this part was a lie (via cut'n'paste); I failed to notice that this
test was set -u, so it actually broke for all *non* cross cases.

The attached patch should be better.
-------------- next part --------------
diff -Nru clutter-1.0-1.26.2+dfsg/debian/tests/build clutter-1.0-1.26.2+dfsg/debian/tests/build
--- clutter-1.0-1.26.2+dfsg/debian/tests/build	2019-08-27 02:44:04.000000000 -0700
+++ clutter-1.0-1.26.2+dfsg/debian/tests/build	2019-12-06 15:23:12.000000000 -0800
@@ -11,6 +11,13 @@
 export XDG_RUNTIME_DIR="$WORKDIR"
 trap "rm -rf $WORKDIR" 0 INT QUIT ABRT PIPE TERM
 cd $WORKDIR
+
+if [ -n "${DEB_HOST_GNU_TYPE:-}" ]; then
+    CROSS_COMPILE="$DEB_HOST_GNU_TYPE-"
+else
+    CROSS_COMPILE=
+fi
+
 cat <<EOF > cally.c
 #include <cally/cally.h>
 
@@ -53,7 +60,7 @@
             ;;
     esac
 
-    gcc -o "${lib}-test" "${code}" $(pkg-config --cflags --libs ${packages})
+    ${CROSS_COMPILE}gcc -o "${lib}-test" "${code}" $(${CROSS_COMPILE}pkg-config --cflags --libs ${packages})
     echo "build ($lib): OK"
     [ -x "${lib}-test" ]
     dbus-run-session -- xvfb-run -a "./${lib}-test"