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[PATCH 01/14] S390: Get rid of make warning: overriding recipe for target gconv-modules.

This patch introduces a way to provide an architecture dependent gconv-modules
file. Before this patch, the gconv-modules file was normally installed from
src-dir/iconvdata/gconv-modules. The S390 Makefile had overridden the
installation recipe (with a make warning) in order to install the
gconv-module-s390 file from build-dir.
The iconvdata/Makefile provides another recipe, which copies the gconv-modules
file from src to build dir, which are used by the testcases.
Thus the testcases does not use the currently build s390-modules.

This patch uses build-dir/iconvdata/gconv-modules for installation.
If makefile variable GCONV_MODULES is not defined, then gconv-modules file
is copied form source to build directory.
If an architecture wants to create his own gconv-modules file, then the variable
GCONV_MODULE is set to the name of the architecture-dependent gconv-modules file
in build-directory, which has to be created by a recipe in sysdeps/.../Makefile.
Then the  iconvdata/Makefile copies this file to build-dir/iconvdata/gconv-modules, which will be used for installation and test.

This way, the s390-Makefile does not need to override the recipe for gconv-modules and no warning is emitted anymore.


    * iconvdata/Makefile (GCONV_MODULES): New variable, which can
    be set by sysdeps Makefile.
    Install file from $(objpfx)gconv-modules.
    ($(objpfx)gconv-modules): Copy File from src-dir or from
    build-dir with file-name specified by GCONV_MODULES.
    * sysdeps/s390/s390-64/Makefile ($(inst_gconvdir)/gconv-modules):
    (GCONV_MODULES): New variable.
 iconvdata/Makefile            | 15 +++++++++++++--
 sysdeps/s390/s390-64/Makefile | 17 ++---------------
 2 files changed, 15 insertions(+), 17 deletions(-)

diff --git a/iconvdata/Makefile b/iconvdata/Makefile
index 357530b..1ac1a5c 100644
--- a/iconvdata/Makefile
+++ b/iconvdata/Makefile
@@ -244,7 +244,7 @@ headers: $(addprefix $(objpfx), $(generated-modules:=.h))
 $(addprefix $(inst_gconvdir)/, $( \
     $(inst_gconvdir)/%: $(objpfx)% $(+force)
-$(inst_gconvdir)/gconv-modules: gconv-modules $(+force)
+$(inst_gconvdir)/gconv-modules: $(objpfx)gconv-modules $(+force)
 ifeq (no,$(cross-compiling))
 # Update the $(prefix)/lib/gconv/gconv-modules.cache file. This is necessary
@@ -332,6 +332,17 @@ tst-tables-clean:
 	-rm -f $(objpfx)tst-*.table $(objpfx)tst-EUC-TW.irreversible
 ifdef objpfx
+# Override GCONV_MODULES file name and provide a Makefile recipe,
+# if you want to create your own version.
+# Copy gconv-modules from src-tree for tests and installation.
 $(objpfx)gconv-modules: gconv-modules
-	cp $^ $@
+	cp $< $@
+generated += $(GCONV_MODULES)
+# Copy overrided GCONV_MODULES file to gconv-modules for tests and installation.
+$(objpfx)gconv-modules: $(objpfx)$(GCONV_MODULES)
+	cp $< $@
diff --git a/sysdeps/s390/s390-64/Makefile b/sysdeps/s390/s390-64/Makefile
index ce4f0c5..de249a7 100644
--- a/sysdeps/s390/s390-64/Makefile
+++ b/sysdeps/s390/s390-64/Makefile
@@ -39,7 +39,7 @@ $(patsubst %, $(inst_gconvdir)/, $(s390x-iconv-modules)) : \
 $(inst_gconvdir)/ $(objpfx) $(+force)
-$(objpfx)gconv-modules-s390: gconv-modules $(+force)
+$(objpfx)gconv-modules-s390: gconv-modules
 	cp $< $@
 	echo >> $@
 	echo "# S/390 hardware accelerated modules" >> $@
@@ -74,19 +74,6 @@ $(objpfx)gconv-modules-s390: gconv-modules $(+force)
 	echo -n "module	ISO-10646/UTF8/		UTF-16BE//	" >> $@
 	echo "	UTF8_UTF16_Z9		1" >> $@
-$(inst_gconvdir)/gconv-modules: $(objpfx)gconv-modules-s390 $(+force)
-	$(do-install)
-ifeq (no,$(cross-compiling))
-# Update the $(prefix)/lib/gconv/gconv-modules.cache file. This is necessary
-# if this libc has more gconv modules than the previously installed one.
-	if test -f "$(inst_gconvdir)/gconv-modules.cache"; then \
-	   LC_ALL=C \
-	   $(rtld-prefix) \
-	   $(common-objpfx)iconv/iconvconfig \
-	     $(addprefix --prefix=,$(install_root)); \
-	fi
-	@echo '*@*@*@ You should recreate $(inst_gconvdir)/gconv-modules.cache'
+GCONV_MODULES = gconv-modules-s390

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