[Buildroot] [PATCH v2 next 1/7] toolchain: add common binutils version hidden config options

[Vicente Olivert Riera]

This commit adds a number of hidden Config.in options, that will be used
to handle dependencies on the binutils version. We mimic the model that
was used for the kernel headers dependency mechanism.

These hidden options will be selected by the internal and external
toolchain backend logic respectively, in follow-up commits.

These options will be helpful when we need to make packages depend on
certain version of binutils. Further patches will do this for gcc and
valgrind packages.

Signed-off-by: Vicente Olivert Riera <Vincent.Riera at imgtec.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
---
Changes v1 -> v2:
 - Explain in the commit log why we need these options. (Yann)

 toolchain/toolchain-common.in | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/toolchain/toolchain-common.in b/toolchain/toolchain-common.in
index 1fe28a9..deede7b 100644
--- a/toolchain/toolchain-common.in
+++ b/toolchain/toolchain-common.in
@@ -327,6 +327,45 @@ config BR2_TOOLCHAIN_GCC_AT_LEAST
 	default "4.4"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_4
 	default "4.3"	if BR2_TOOLCHAIN_GCC_AT_LEAST_4_3
 
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_20
+	bool
+
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_21
+	bool
+	select BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_20
+
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_22
+	bool
+	select BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_21
+
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_23
+	bool
+	select BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_22
+
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_24
+	bool
+	select BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_23
+
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_25
+	bool
+	select BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_24
+
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_26
+	bool
+	select BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_25
+
+# This order guarantees that the highest version is set, as kconfig
+# stops affecting a value on the first matching default.
+config BR2_TOOLCHAIN_BINUTILS_AT_LEAST
+	string
+	default "2.26" if BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_26
+	default "2.25" if BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_25
+	default "2.24" if BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_24
+	default "2.23" if BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_23
+	default "2.22" if BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_22
+	default "2.21" if BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_21
+	default "2.20" if BR2_TOOLCHAIN_BINUTILS_AT_LEAST_2_20
+
 config BR2_TOOLCHAIN_HAS_SYNC_1
 	bool
 	default y
-- 
2.7.3