glibc: add 2.19 as a supported version

glibc 2.19 has been released recently
(https://sourceware.org/ml/libc-alpha/2014-02/msg00224.html). This
commit allows to build a toolchain with this new version. In order to
allow this, we add a version selection that did not exist for
glibc. We default to 2.18, which was the only supported version until
now, and add an option for 2.19.

For microblaze, which uses a specific glibc version, the version
selection choice is not displayed.

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

package/glibc/Config.in

@@ -0,0 +1,21 @@
+if BR2_TOOLCHAIN_BUILDROOT_GLIBC
+
+choice
+	prompt "glibc version"
+	default BR2_GLIBC_VERSION_2_18
+	# Architectures supported in mainline glibc
+	depends on BR2_arm    || BR2_armeb    || BR2_aarch64 || \
+		   BR2_i386   || BR2_mips     || BR2_mipsel  || \
+		   BR2_mips64 || BR2_mips64el || BR2_powerpc || \
+		   BR2_sh     || BR2_sh64     || BR2_sparc   || \
+		   BR2_x86_64
+
+config BR2_GLIBC_VERSION_2_18
+       bool "2.18"
+
+config BR2_GLIBC_VERSION_2_19
+       bool "2.19"
+
+endchoice
+
+endif

package/glibc/glibc.mk

@@ -21,7 +21,7 @@ GLIBC_SITE = http://downloads.yoctoproject.org/releases/eglibc/
 GLIBC_SOURCE = eglibc-$(GLIBC_VERSION).tar.bz2
 GLIBC_SRC_SUBDIR = libc
 else
-GLIBC_VERSION = 2.18
+GLIBC_VERSION = $(if $(BR2_GLIBC_VERSION_2_19),2.19,2.18)
 GLIBC_SITE = $(BR2_GNU_MIRROR)/libc
 GLIBC_SOURCE = glibc-$(GLIBC_VERSION).tar.xz
 GLIBC_SRC_SUBDIR = .

toolchain/toolchain-buildroot/Config.in

@@ -70,7 +70,7 @@ config BR2_TOOLCHAIN_BUILDROOT_LIBC
 	default "glibc"  if BR2_TOOLCHAIN_BUILDROOT_GLIBC
 
 source "package/uclibc/Config.in"
-
+source "package/glibc/Config.in"
 source "package/binutils/Config.in.host"
 source "package/gcc/Config.in.host"
 source "package/elf2flt/Config.in.host"