diff mbox

toolchain: add option to copy the gconv libraries

Message ID 1405981499-5943-1-git-send-email-yann.morin.1998@free.fr
State Superseded
Headers show

Commit Message

Yann E. MORIN July 21, 2014, 10:24 p.m. UTC 
The gconv libraries are used to translate between different character
sets (charsets).

In (e)glibc they are implemented by the internal implemenation of
iconv, called gconv, and are provided as dlopen-able libraries.

Some packages need them to present text to the user (eg. XBMC Gotham).

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>

---
Notes:

  - this is getting a bit urgent, as without it, XBMC is basically
    unusable, as it does not render the labels on the menus.

    I would really appreciate a review on this, so I have time to
    respin it before -rc1 if changes are required.

  - contrary to what Thomas asked, I did not provide a minimalist
    list of default gconv modules to install. Thomas was concerned
    about the size of the installed modules. But thos emodules are
    probably only used in GUIs, which would probably already pull
    one of the graphical frameworks such as Qt or GTK, which are
    already huge beasts. So, I still think that the default should
    be to install all modules.

Changes v4 -> v5;
  - expunge gconv-module from not-installed modules  (Thomas)

Change v3 -> v4:
  - fix superfluous semi-colon before '||'

Changes v2 -> v3:
  - properly fail if a specified lib is missing (e.g. typo)

Changes v1 -> v2:
  - add option to install only a select list of gconv libs (Thomas)
  - rename the option (Thomas)
---
 Makefile                              | 24 ++++++++++++++++++++++++
 support/scripts/expunge-gconv-modules | 26 ++++++++++++++++++++++++++
 toolchain/toolchain-common.in         | 22 ++++++++++++++++++++++
 3 files changed, 72 insertions(+)
 create mode 100755 support/scripts/expunge-gconv-modules
diff mbox

Patch

diff --git a/Makefile b/Makefile
index 1af51de..44cab77 100644
--- a/Makefile
+++ b/Makefile
@@ -551,6 +551,30 @@  endef
 TARGET_FINALIZE_HOOKS += PURGE_LOCALES
 endif
 
+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 \
+		rm -f $(TARGET_DIR)/usr/lib/gconv/gconv-modules; \
+		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; \
+			./support/scripts/expunge-gconv-modules $${l} \
+				<$(STAGING_DIR)/usr/lib/gconv/gconv-modules \
+				>>$(TARGET_DIR)/usr/lib/gconv/gconv-modules; \
+		done; \
+	fi
+endef
+TARGET_FINALIZE_HOOKS += COPY_GCONV_LIBS
+endif
+
 $(TARGETS_ROOTFS): target-finalize
 
 target-finalize: $(TARGETS)
diff --git a/support/scripts/expunge-gconv-modules b/support/scripts/expunge-gconv-modules
new file mode 100755
index 0000000..3a88fde
--- /dev/null
+++ b/support/scripts/expunge-gconv-modules
@@ -0,0 +1,26 @@ 
+#!/bin/bash
+
+gawk -v file="${1}" '
+$1 == "alias" {
+    aliases[$3] = aliases[$3] " " $2;
+}
+$1 == "module" && $2 != "INTERNAL" {
+    file2mods[$4] = file2mods[$4] " " $2;
+    mod2cost[$2] = $5;
+}
+
+END {
+    printf( "# Modules and aliases for: %s\n\n", file );
+    nb_mods = split( file2mods[file], mods );
+    for( i=1; i<=nb_mods; i++ ) {
+        first = 0;
+        nb_aliases = split( aliases[mods[i]], mod_aliases );
+        for( j=1; j<=nb_aliases; j++ ) {
+            printf( "alias\t%s\t%s\n", mod_aliases[j], mods[i] );
+        }
+        printf( "module\t%s\t%s\t%s\t%d\n", mods[i], "INTERNAL", file, mod2cost[mods[i]] );
+        printf( "module\t%s\t%s\t%s\t%d\n", "INTERNAL", mods[i], file, mod2cost[mods[i]] );
+        printf( "\n" );
+    }
+}
+'
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 @@  config BR2_GENERATE_LOCALE
 	  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