ci: Clarify why we are running autogen.sh even for CMake builds

Signed-off-by: Simon McVittie <smcv@collabora.com>

diff --git a/tools/ci-build.sh b/tools/ci-build.sh
index 584dd106b12d199bd4b1aeac4eb50e33426762d9..3f4bc595f3e2a6bc4e80e6292d5c53a625169652 100755 (executable)
--- a/tools/ci-build.sh
+++ b/tools/ci-build.sh
@@ -85,7 +85,9 @@ maybe_fail_tests () {
     fi
 }
 
-# generate config.h.in and configure
+# Generate config.h.in and configure. We do this for both Autotools and
+# CMake builds, so that the CMake build can compare config.h.in with its
+# own checks.
 NOCONFIGURE=1 ./autogen.sh
 
 srcdir="$(pwd)"