build: Add post install script for MSVC builds

Visual Studio builds do not assume the presence of a shell script
interpreter but would normally use cmd.exe, which would make the post
install shell script useless in such situations.

Fix this by adding a Windows .bat port of the post install script, to be
used on Visual Studio builds, which may be usable on MinGW builds if
MinGW builds can be done directly in cmd.exe.

2 files changed, 35 insertions, 4 deletions

diff --git a/build-aux/post-install.bat b/build-aux/post-install.bat
new file mode 100644
index 000000000..60981ffb2
--- /dev/null
+++ b/build-aux/post-install.bat
@@ -0,0 +1,23 @@
+@echo off
+
+set libdir=%1
+set binary_version=%2
+
+set libdir_windows=%libdir:/=\%
+
+if not "%DESTDIR%" == "" goto warn_msg
+if not exist %libdir_windows%\gdk-pixbuf-2.0\%binary_version%\ mkdir %libdir_windows%\gdk-pixbuf-2.0\%binary_version%
+gdk-pixbuf-query-loaders > %libdir_windows%\gdk-pixbuf-2.0\%binary_version%\loaders.cache
+
+goto end
+
+:warn_msg
+echo ***
+echo *** Warning: loaders.cache not built
+echo ***
+echo *** You should generate this file manually on the host system
+echo *** using:
+echo ***   gdk-pixbuf-query-loaders ^> %libdir_windows%\gdk-pixbuf-2.0\%binary_version%\loaders.cache
+echo ***
+
+:end
\ No newline at end of file
diff --git a/meson.build b/meson.build
index 3c656d430..fafaf2da3 100644
--- a/meson.build
+++ b/meson.build
@@ -407,10 +407,18 @@ subdir('thumbnailer')
 subdir('docs')
 
 if not meson.is_cross_build()
-  meson.add_install_script('build-aux/post-install.sh',
-    gdk_pixbuf_libdir,
-    gdk_pixbuf_binary_version,
-  )
+  # On Visual Studio, we don't normally have a shell interpreter, so use a .bat
+  if cc.get_id() == 'msvc'
+    meson.add_install_script('build-aux/post-install.bat',
+      gdk_pixbuf_libdir,
+      gdk_pixbuf_binary_version,
+    )
+  else
+    meson.add_install_script('build-aux/post-install.sh',
+      gdk_pixbuf_libdir,
+      gdk_pixbuf_binary_version,
+    )
+  endif
 endif
 
 summary = [