[gtk+] build: Create input method module cache directory

[Emmanuele Bassi <ebassi src gnome org>]

commit a5363b9e5dea21226ee8224cb9c2e80a60c03dc6
Author: Daniel Stone <daniels collabora com>
Date:   Wed Aug 23 18:53:59 2017 +0100

    build: Create input method module cache directory
    
    Before running gtk-query-immodules, the cache output directory may not
    actually exist. Make sure it does before we try to write into it.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=793182
    Signed-off-by: Daniel Stone <daniels collabora com>

 build-aux/meson/post-install.sh |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/build-aux/meson/post-install.sh b/build-aux/meson/post-install.sh
index c7390fa..da564a5 100755
--- a/build-aux/meson/post-install.sh
+++ b/build-aux/meson/post-install.sh
@@ -17,5 +17,7 @@ if [ -z "$DESTDIR" ]; then
   gtk-update-icon-cache -q -t -f ${gtk_datadir}/icons/hicolor
 
   echo Updating input method modules cache...
-  gtk4-query-immodules > ${gtk_libdir}/gtk-${gtk_api_version}/${gtk_abi_version}/immodules.cache
+  gtk_imdir=${gtk_libdir}/gtk-${gtk_api_version}/${gtk_abi_version}
+  mkdir -p ${gtk_imdir}
+  gtk4-query-immodules > ${gtk_imdir}/immodules.cache
 fi