ci: ShellCheck preprocessed scripts separately

Change the shellcheck job so that we configure the build and check the
preprocessed versions of the scripts, not the bare ones, which might not
be syntactically valid yet.

.gitlab-ci.yml

@@ -458,8 +458,15 @@ shellcheck:
   extends:
     - .build_on_fedora
   stage: analysis
+  variables:
+    MESON_OPTIONS: >-
+        -Dpipewire-v4l2=enabled
+        -Dpipewire-jack=enabled
   script:
-    - shellcheck $(git grep -l "#\!/.*bin/.*sh")
+    - echo "Configuring with meson options $MESON_OPTIONS"
+    - meson setup "$BUILD_DIR" --prefix="$PREFIX" $MESON_OPTIONS
+    - shellcheck $(git ls-files '*.sh')
+    - shellcheck $(grep -rl "#\!/.*bin/.*sh" "$BUILD_DIR")
 
 spellcheck:
   extends:

doc/input-filter-h.sh

@@ -11,6 +11,7 @@ FILENAME="$1"
 # Add \ingroup commands for the file, for each \addgroup in it
 BASEFILE=$(echo "$FILENAME" | sed -e 's@.*src/pipewire/@pipewire/@; s@.*spa/include/spa/@spa/@; s@.*src/test/@test/@;')
 
+# shellcheck disable=SC2028 # \file is not an escape sequence
 echo "/** \file"
 echo "\`$BASEFILE\`"
 sed -n -e '/.*\\addtogroup [a-zA-Z0-9_].*/ { s/.*addtogroup /\\ingroup /; p; }' < "$FILENAME" | sort | uniq

pipewire-jack/src/pw-jack.in

@@ -52,6 +52,8 @@ if [ -n "$PERIOD" ]; then
 	fi
 	export PIPEWIRE_QUANTUM
 fi
+
+# shellcheck disable=SC2016 # ${LIB} is interpreted by ld.so, not the shell
 LD_LIBRARY_PATH='@LIBJACK_PATH@'"${LD_LIBRARY_PATH+":$LD_LIBRARY_PATH"}"
 export LD_LIBRARY_PATH
 

pipewire-v4l2/src/pw-v4l2.in

@@ -37,6 +37,7 @@ shift $(( OPTIND - 1 ))
 if [ "$PW_UNINSTALLED" = 1 ] ; then
    PW_V4L2_LD_PRELOAD="$PW_BUILDDIR"'/pipewire-v4l2/src/libpw-v4l2.so'
 else
+   # shellcheck disable=SC2016 # ${LIB} is interpreted by ld.so, not the shell
    PW_V4L2_LD_PRELOAD='@LIBV4L2_PATH@/libpw-v4l2.so'
 fi