build, gitlab-ci: generated files should be in the build dir.

Also update the CI script to copy the generated language files before
creating the installer so that the gimp3264.iss script finds them.

.gitlab-ci.yml

@@ -301,7 +301,7 @@ gimp-win64-native:
     expire_in: 1 day
     paths:
     - _install-w64
-    - build/windows/installer/lang/
+    - _build-w64/build/windows/installer/lang/
   cache:
     paths:
     - _ccache/
@@ -332,7 +332,7 @@ packaging-win64-native:
     expire_in: 1 day
     paths:
     - gimp-w64
-    - build/windows/installer/lang/
+    - _build-w64/build/windows/installer/lang/
   needs: ["gimp-win64-native"]
 
 ## WINDOWS 32-bit CI (native MSYS2) ##

build/windows/gitlab-ci/installer-gimp-msys2.sh

@@ -27,6 +27,9 @@ wget https://raw.githubusercontent.com/jrsoftware/issrc/main/Files/Languages/Uno
 wget https://raw.githubusercontent.com/jrsoftware/issrc/main/Files/Languages/Unofficial/Vietnamese.isl
 cd -
 
+# Copy generated language files into the source directory.
+cp _build-w64/build/windows/installer/lang/*isl build/windows/installer/lang
+
 # Construct now the installer.
 MAJOR_VERSION=`grep 'm4_define(\[gimp_major_version' configure.ac |sed 's/m4_define(\[gimp_major_version.*\[\([0-9]*\)\].*/\1/'`
 MINOR_VERSION=`grep 'm4_define(\[gimp_minor_version' configure.ac |sed 's/m4_define(\[gimp_minor_version.*\[\([0-9]*\)\].*/\1/'`

build/windows/installer/lang/Makefile.am

@@ -51,7 +51,7 @@ stamp-isl: setup.isl Makefile.am
 		code=`echo $$lang | cut -d: -f1`;					\
 		prefix=`echo $$lang | cut -d: -f2 | sed 's/[][]/\\\\\\0/g'`;		\
 		encoding=`echo $$lang | cut -d: -f3`;					\
-		isl="$(srcdir)/$$code.setup.isl";					\
+		isl="$(builddir)/$$code.setup.isl";					\
 		echo "  GEN      $$isl";						\
 		sed '/^\w\+'"$$prefix"'=/{s/\(.\)'"$$prefix"'/\1/;n};/^\w.*=/d' $< |	\
 		iconv -c -f UTF-8 -t $$encoding > "$$isl";				\
@@ -67,7 +67,7 @@ clean-local:
 	@						\
 	for lang in $(languages); do			\
 		code=`echo $$lang | cut -d: -f1`;	\
-		isl="$(srcdir)/$$code.setup.isl";	\
+		isl="$(builddir)/$$code.setup.isl";	\
 		echo "  RM       $$isl";		\
 		rm -f "$$isl";				\
 	done