toolchain: add option to copy the gconv libraries
The gconv libraries are used to translate between different character sets
('charsets', even 'csets' sometimes). Some packages need them to present
text to the user (eg. XBMC Gotham).
In (e)glibc they are implemented by the internal implemenation of iconv,
called gconv, and are provided as dlopen-able libraries.
Note that some gconv modules need extra libraries (shared by more than
one gconv module), so we must, when adding a subset of modules, scan the
installed modules in search of the missing libraries.
[Thomas: add general explanation in expunge-gconv-modules and fix
coding style.]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Cc: Bernd Kuhls <bernd.kuhls@t-online.de>
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
Cc: Eric Limpens <limpens@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
diff --git a/toolchain/toolchain-common.in b/toolchain/toolchain-common.in
index a91d247..13de9e5 100644
--- a/toolchain/toolchain-common.in
+++ b/toolchain/toolchain-common.in
@@ -77,6 +77,28 @@
specified, UTF-8 is assumed. Examples of locales: en_US,
fr_FR.UTF-8.
+config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
+ bool "Copy gconv libraries"
+ depends on BR2_TOOLCHAIN_USES_GLIBC
+ help
+ The gconv libraries are used to convert between different
+ character sets (charsets).
+
+ Say 'y' if you need to store and/or display different charsets.
+
+config BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST
+ string "Gconv libraries to copy"
+ depends on BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY
+ help
+ Set to the list of gconv libraries to copy.
+ Leave empty to copy all gconv libraries.
+
+ Specify only the basename of the libraries, leave
+ out the .so extension. Eg.:
+ IBM850 ISO8859-15 UNICODE
+
+ Note: the full set of gconv libs are ~8MiB (on ARM).
+
# glibc and eglibc directly include gettext, so a separatly compiled
# gettext isn't needed and shouldn't be built to avoid conflicts. Some
# packages always need gettext, other packages only need gettext when
diff --git a/toolchain/toolchain.mk b/toolchain/toolchain.mk
new file mode 100644
index 0000000..8fe06ff
--- /dev/null
+++ b/toolchain/toolchain.mk
@@ -0,0 +1,36 @@
+# This file contains toolchain-related customisation of the content
+# of the target/ directory. Those customisations are added to the
+# TARGET_FINALIZE_HOOKS, to be applied just after all packages
+# have been built.
+
+# Install the gconv modules
+ifeq ($(BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_COPY),y)
+GCONV_LIBS = $(call qstrip,$(BR2_TOOLCHAIN_GLIBC_GCONV_LIBS_LIST))
+define COPY_GCONV_LIBS
+ $(Q)if [ -z "$(GCONV_LIBS)" ]; then \
+ $(INSTALL) -m 0644 -D $(STAGING_DIR)/usr/lib/gconv/gconv-modules \
+ $(TARGET_DIR)/usr/lib/gconv/gconv-modules; \
+ $(INSTALL) -m 0644 $(STAGING_DIR)/usr/lib/gconv/*.so \
+ $(TARGET_DIR)/usr/lib/gconv \
+ || exit 1; \
+ else \
+ for l in $(GCONV_LIBS); do \
+ $(INSTALL) -m 0644 -D $(STAGING_DIR)/usr/lib/gconv/$${l}.so \
+ $(TARGET_DIR)/usr/lib/gconv/$${l}.so \
+ || exit 1; \
+ $(TARGET_READELF) -d $(STAGING_DIR)/usr/lib/gconv/$${l}.so |\
+ sort -u |\
+ sed -e '/.*(NEEDED).*\[\(.*\.so\)\]$$/!d; s//\1/;' |\
+ while read lib; do \
+ $(INSTALL) -m 0644 -D $(STAGING_DIR)/usr/lib/gconv/$${lib} \
+ $(TARGET_DIR)/usr/lib/gconv/$${lib} \
+ || exit 1; \
+ done; \
+ done; \
+ ./support/scripts/expunge-gconv-modules "$(GCONV_LIBS)" \
+ <$(STAGING_DIR)/usr/lib/gconv/gconv-modules \
+ >$(TARGET_DIR)/usr/lib/gconv/gconv-modules; \
+ fi
+endef
+TARGET_FINALIZE_HOOKS += COPY_GCONV_LIBS
+endif