[gimp] build: custom build of GLib with additional patch.

[Jehan <jehanp src gnome org>]

commit 74d3ad700af1097072fe7922811f9501cfdf200f
Author: Jehan <jehan girinstud io>
Date:   Mon Jun 21 18:31:13 2021 +0200

    build: custom build of GLib with additional patch.
    
    The MSYS2 package for glib2 does not include the patch to reduce delays
    of disconnected volumes (glib!2020).
    Let's make our own build in our CI for our installer (hence also
    experimenting overriding MSYS2 packages when necessary).
    
    Except for this patch, this is the same build as MSYS2 and same option,
    as described in:
    https://github.com/msys2/MINGW-packages/tree/master/mingw-w64-glib2

 build/windows/gitlab-ci/build-deps-msys2.sh | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
---
diff --git a/build/windows/gitlab-ci/build-deps-msys2.sh b/build/windows/gitlab-ci/build-deps-msys2.sh
index 99b98dc202..58be76b90e 100644
--- a/build/windows/gitlab-ci/build-deps-msys2.sh
+++ b/build/windows/gitlab-ci/build-deps-msys2.sh
@@ -68,6 +68,31 @@ make
 make install
 cd ../..
 
+## GLib (patched from MSYS2) ##
+
+git clone --branch 2.68.0 --depth=${GIT_DEPTH} https://gitlab.gnome.org/GNOME/glib.git _glib
+
+cd _glib/
+wget 
"https://raw.githubusercontent.com/msys2/MINGW-packages/master/mingw-w64-glib2/0001-Update-g_fopen-g_open-and-g_creat-to-open-with-FILE_.patch";
+wget 
"https://raw.githubusercontent.com/msys2/MINGW-packages/master/mingw-w64-glib2/0001-disable-some-tests-when-static.patch";
+wget 
"https://raw.githubusercontent.com/msys2/MINGW-packages/master/mingw-w64-glib2/0001-win32-Make-the-static-build-work-with-MinGW-when-pos.patch";
+wget 
"https://raw.githubusercontent.com/msys2/MINGW-packages/master/mingw-w64-glib2/0002-disable_glib_compile_schemas_warning.patch";
+git apply 0001-Update-g_fopen-g_open-and-g_creat-to-open-with-FILE_.patch
+git apply 0001-win32-Make-the-static-build-work-with-MinGW-when-pos.patch
+patch -p1 < 0001-disable-some-tests-when-static.patch
+git apply 0002-disable_glib_compile_schemas_warning.patch
+# Only this patch is different from MSYS2 build.
+git apply ../build/windows/patches/glib-mr2020.patch
+
+mkdir _build
+cd _build
+meson -Dprefix="${GIMP_PREFIX}" -Dlibelf=disabled --buildtype=release \
+      --wrap-mode=nodownload --auto-features=enabled \
+      -Ddefault_library=shared -Dforce_posix_threads=true -Dgtk_doc=false ..
+ninja
+ninja install
+cd ../..
+
 ## babl and GEGL (follow master branch) ##
 
 git clone --depth=${GIT_DEPTH} https://gitlab.gnome.org/GNOME/babl.git _babl