efibootmgr: use the new gettext logic

This commit switches to use the new gettext logic, which involves:

 - using TARGET_NLS_DEPENDENCIES instead of hand-encoded dependencies
   on gettext/host-gettext

 - using TARGET_NLS_LIBS to force linking against libintl

 - dropping BR2_PACKAGE_GETTEXT selection

The BR2_USE_WCHAR dependency was needed for gettext, now that we no
longer need gettext, we can also get rid of this dependency.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/efibootmgr/Config.in

@@ -6,8 +6,6 @@ config BR2_PACKAGE_EFIBOOTMGR
 	depends on !BR2_TOOLCHAIN_USES_MUSL # efivar
 	depends on BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 # efivar
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS
-	depends on BR2_USE_WCHAR # gettext
-	select BR2_PACKAGE_GETTEXT if BR2_NEEDS_GETTEXT
 	select BR2_PACKAGE_EFIVAR
 	help
 	  A Linux user-space application to modify the Intel Extensible
@@ -17,11 +15,10 @@ config BR2_PACKAGE_EFIBOOTMGR
 
 	  https://github.com/rhinstaller/efibootmgr
 
-comment "efibootmgr needs a glibc or uClibc toolchain w/ wchar, dynamic library, headers >= 3.12, gcc >= 4.9"
+comment "efibootmgr needs a glibc or uClibc toolchain w/ dynamic library, headers >= 3.12, gcc >= 4.9"
 	depends on BR2_PACKAGE_EFIVAR_ARCH_SUPPORTS
 	depends on BR2_STATIC_LIBS || \
 		!BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_12 || \
 		BR2_TOOLCHAIN_USES_MUSL || \
-		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9 || \
-		!BR2_USE_WCHAR
+		!BR2_TOOLCHAIN_GCC_AT_LEAST_4_9
 	depends on !BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS

package/efibootmgr/efibootmgr.mk

@@ -8,8 +8,8 @@ EFIBOOTMGR_VERSION = 14
 EFIBOOTMGR_SITE = $(call github,rhinstaller,efibootmgr,$(EFIBOOTMGR_VERSION))
 EFIBOOTMGR_LICENSE = GPL-2.0+
 EFIBOOTMGR_LICENSE_FILES = COPYING
-EFIBOOTMGR_DEPENDENCIES = efivar $(if $(BR2_NEEDS_GETTEXT),gettext)
-EFIBOOTMGR_LDFLAGS = $(TARGET_LDFLAGS) $(if $(BR2_NEEDS_GETTEXT),-lintl)
+EFIBOOTMGR_DEPENDENCIES = efivar $(TARGET_NLS_DEPENDENCIES)
+EFIBOOTMGR_LDFLAGS = $(TARGET_LDFLAGS) $(TARGET_NLS_LIBS)
 
 define EFIBOOTMSR_PATCH_HEADER_PATH
 	$(SED) 's,-I/,-I$(STAGING_DIR)/,' $(@D)/Makefile