[freetype2] logging f6b0fd7 2/8: Improve setup for 'dlg' library.

[Werner LEMBERG]

branch: logging
commit f6b0fd7b792933fb601470bf70f2f4285712f449
Author: Werner Lemberg <wl@gnu.org>
Commit: Werner Lemberg <wl@gnu.org>

    Improve setup for 'dlg' library.
    
    * autogen.sh (copy_submodule_file), builds/toplevel.mk: Redirect
    stderr to `/dev/null`.
    
    * builds/toplevel.mk: Move code block to handle 'dlg' stuff into
    `check_platform` conditional.
    Also fix wildcard expressions for guarding `git submodule` commands.
    Also make file copying work with non-Unix platforms (untested).
---
 ChangeLog          | 12 ++++++++++++
 autogen.sh         |  2 +-
 builds/toplevel.mk | 37 ++++++++++++++++++++-----------------
 3 files changed, 33 insertions(+), 18 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index a4231f4..3f17cf0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,15 @@
+2020-12-02  Werner Lemberg  <wl@gnu.org>
+
+       Improve setup for 'dlg' library.
+
+       * autogen.sh (copy_submodule_file), builds/toplevel.mk: Redirect
+       stderr to `/dev/null`.
+
+       * builds/toplevel.mk: Move code block to handle 'dlg' stuff into
+       `check_platform` conditional.
+       Also fix wildcard expressions for guarding `git submodule` commands.
+       Also make file copying work with non-Unix platforms (untested).
+
 2020-12-01  Werner Lemberg  <wl@gnu.org>
 
        [build] Use gcc (and clang) in C99 mode.
diff --git a/autogen.sh b/autogen.sh
index 5608040..fd5fa1f 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -166,7 +166,7 @@ chmod +x ./configure
 copy_submodule_files ()
 {
   echo "Copying files from \`submodules/dlg' to \`src/dlg'"
-  mkdir src/dlg/dlg
+  mkdir src/dlg/dlg 2> /dev/null
   cp $DLG_INC_DIR/dlg.h src/dlg/dlg
   cp $DLG_INC_DIR/output.h src/dlg/dlg
   cp $DLG_SRC_DIR/* src/dlg
diff --git a/builds/toplevel.mk b/builds/toplevel.mk
index c08c9f4..8379beb 100644
--- a/builds/toplevel.mk
+++ b/builds/toplevel.mk
@@ -103,23 +103,6 @@ ifneq ($(findstring setup,$(MAKECMDGOALS)),)
   check_platform := 1
 endif
 
-# For builds directly from the git repository we need to copy files
-# from `submodule/dlg' to `src/dlg'.
-#
-ifeq ($(wildcard src/dlg/dlg.*),)
-  ifeq ($(wildcard submodules/dlg/dlg.*),)
-    $(info Checking out submodule in `submodules/dlg')
-    $(shell git submodule init)
-    $(shell git submodule update)
-  endif
-
-  $(info Copying files from `submodules/dlg' to `src/dlg')
-  $(shell mkdir src/dlg/dlg)
-  $(shell cp submodules/dlg/include/dlg/dlg.h src/dlg/dlg)
-  $(shell cp submodules/dlg/include/dlg/output.h src/dlg/dlg)
-  $(shell cp submodules/dlg/src/dlg/dlg.c src/dlg/)
-endif
-
 # Include the automatic host platform detection rules when we need to
 # check the platform.
 #
@@ -129,6 +112,26 @@ ifdef check_platform
 
   include $(TOP_DIR)/builds/detect.mk
 
+  # For builds directly from the git repository we need to copy files
+  # from `submodule/dlg' to `src/dlg'.
+  #
+  ifeq ($(wildcard src/dlg/dlg.*),)
+    ifeq ($(wildcard submodules/dlg/*),)
+      $(info Checking out submodule in `submodules/dlg')
+      $(shell git submodule init)
+      $(shell git submodule update)
+    endif
+
+    $(info Copying files from `submodules/dlg' to `src/dlg')
+    $(shell mkdir $(subst /,$(SEP),src/dlg/dlg) $(NO_OUTPUT))
+    $(shell $(COPY) \
+      $(subst /,$(SEP),submodules/dlg/include/dlg/dlg.h src/dlg/dlg))
+    $(shell $(COPY) \
+      $(subst /,$(SEP),submodules/dlg/include/dlg/output.h src/dlg/dlg))
+    $(shell $(COPY) \
+      $(subst /,$(SEP),submodules/dlg/src/dlg/dlg.c src/dlg))
+  endif
+
   # This rule makes sense for Unix only to remove files created by a run of
   # the configure script which hasn't been successful (so that no
   # `config.mk' has been created).  It uses the built-in $(RM) command of