build: Tweaks to better support non-English as primary language

 * get rid of $(LANGUAGE) in top-level makefile (and configure script)
 * un-hardcode English-as-primary-language in a couple more places
 * allow DEFAULT_VOICE_LANG to be overriden

To actually change the primary from English, one must change:

 * $english in voice.pl
 * hardcoded 'english' in rbutil
 * $ENGLISH in apps/lang/lang.make
 * DEFAULT_VOICE_LANG in apps/talk.c
 * configure script (default prompt)

Of course, if one wants to change the default UI language, it's simpler
to change the default language setting variable at compile time, or
perhaps by adding a configuration file with the desired value into the
.rockbox directory when the .zip is assembled.

Change-Id: If5cf76019d416e838628a2eccd4ec7d6cbaeeb74

1 files changed, 4 insertions, 3 deletions

diff --git a/apps/lang/lang.make b/apps/lang/lang.make
index 08cec5090a..c5db820326 100644
--- a/apps/lang/lang.make
+++ b/apps/lang/lang.make
@@ -11,6 +11,7 @@ LANGS := $(call preprocess, $(APPSDIR)/lang/SOURCES)
 LANGOBJ := $(LANGS:$(ROOTDIR)/%.lang=$(BUILDDIR)/%.lng)
 VOICEOBJ := $(LANGS:$(ROOTDIR)/%.lang=$(BUILDDIR)/%.vstrings)
 LANG_O = $(BUILDDIR)/lang/lang_core.o
+ENGLISH := english
 
 CLEANOBJS += $(BUILDDIR)/lang/max_language_size.h $(BUILDDIR)/lang/lang*
 
@@ -36,7 +37,7 @@ $(BUILDDIR)/lang/lang_core.o: $(BUILDDIR)/lang/lang.h $(BUILDDIR)/lang/lang_core
 # instead we pretend that genlang create lang_core.c and that lang.c depends from lang.h
 # it will work fine as long as one never manually removes lang.c and not lang.h, and it will avoid
 # race conditions such as running genlang twice or worse in parallel with other things!
-$(BUILDDIR)/lang/lang.h: $(APPSDIR)/lang/$(LANGUAGE).lang $(BUILDDIR)/apps/features
+$(BUILDDIR)/lang/lang.h: $(APPSDIR)/lang/$(ENGLISH).lang $(BUILDDIR)/apps/features
         $(call PRINTS,GEN lang.h)
         $(SILENT)for f in `cat $(BUILDDIR)/apps/features`; do feat="$$feat:$$f" ; done; \
                 perl -s $(TOOLSDIR)/genlang -p=$(BUILDDIR)/lang -t=$(MODELNAME)$$feat $<
@@ -49,8 +50,8 @@ $(BUILDDIR)/lang_enum.h: $(BUILDDIR)/lang/lang.h
 $(BUILDDIR)/%.lng $(BUILDDIR)/%.vstrings: $(ROOTDIR)/%.lang $(BUILDDIR)/apps/genlang-features
         $(call PRINTS,GENLANG $(subst $(ROOTDIR)/,,$<))
         $(SILENT)mkdir -p $(dir $@)
-        $(SILENT)$(TOOLSDIR)/genlang -u -e=$(APPSDIR)/lang/english.lang $< > $@.tmp
-        $(SILENT)$(TOOLSDIR)/genlang -e=$(APPSDIR)/lang/english.lang -t=$(MODELNAME):`cat $(BUILDDIR)/apps/genlang-features` -i=$(TARGET_ID) -b=$*.lng -c=$*.vstrings $@.tmp
+        $(SILENT)$(TOOLSDIR)/genlang -u -e=$(APPSDIR)/lang/$(ENGLISH).lang $< > $@.tmp
+        $(SILENT)$(TOOLSDIR)/genlang -e=$(APPSDIR)/lang/$(ENGLISH).lang -t=$(MODELNAME):`cat $(BUILDDIR)/apps/genlang-features` -i=$(TARGET_ID) -b=$*.lng -c=$*.vstrings $@.tmp
         $(SILENT)rm -f $@.tmp
 
 $(BUILDDIR)/apps/lang/voicestrings.zip: $(VOICEOBJ)