toolchain: remove CodeSourcery sh toolchain

Since glibc 2.17, executable link command need not include the -lrt option for
clock_* system calls. As a result, over time less and less software packages
bother to check whether to toolchain needs -lrt. We are now at a point where
maintainers refuse to add this complexity into their build system. This
requires Buildroot to carry patches fixing this issue indefinitely.

glibc 2.17 is now 4.5 years old. There is no reason to use an older version
with current software.

This commit removes the predefined profile for CodeSourcery sh toolchain that
is based on glibc 2.16. One may still use the custom external toolchain
support in Buildroot to get this toolchain back, and deal with any build
issues that this toolchain causes.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

Config.in.legacy

@@ -145,6 +145,15 @@ endif
 ###############################################################################
 comment "Legacy options removed in 2017.08"
 
+config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH
+	bool "SH Sourcery toolchain has been removed"
+	select BR2_LEGACY
+	help
+	  The Sourcery CodeBench toolchain for the sh architecture has
+	  been removed, since it uses glibc older than 2.17 that requires
+	  -lrt to link executables using clock_* system calls. This makes
+	  this toolchain difficult to maintain over time.
+
 config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86
 	bool "x86 Sourcery toolchain has been removed"
 	select BR2_LEGACY

toolchain/toolchain-external/Config.in

@@ -33,9 +33,6 @@ source "toolchain/toolchain-external/toolchain-external-codescape-mti-mips/Confi
 # NIOSII
 source "toolchain/toolchain-external/toolchain-external-codesourcery-niosII/Config.in"
 
-# SH4a
-source "toolchain/toolchain-external/toolchain-external-codesourcery-sh/Config.in"
-
 # x86_64
 source "toolchain/toolchain-external/toolchain-external-codesourcery-amd64/Config.in"
 
@@ -126,9 +123,6 @@ source "toolchain/toolchain-external/toolchain-external-codescape-mti-mips/Confi
 # NIOSII
 source "toolchain/toolchain-external/toolchain-external-codesourcery-niosII/Config.in.options"
 
-# SH4a
-source "toolchain/toolchain-external/toolchain-external-codesourcery-sh/Config.in.options"
-
 # x86_64
 source "toolchain/toolchain-external/toolchain-external-codesourcery-amd64/Config.in.options"
 

toolchain/toolchain-external/toolchain-external-codesourcery-sh/Config.in

@@ -1,25 +0,0 @@
-config BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH
-	bool "Sourcery CodeBench SH 2012.09"
-	depends on BR2_sh4a || BR2_sh4aeb
-	depends on BR2_HOSTARCH = "x86_64" || BR2_HOSTARCH = "x86"
-	depends on !BR2_STATIC_LIBS
-	select BR2_TOOLCHAIN_EXTERNAL_GLIBC
-	select BR2_TOOLCHAIN_HAS_SSP
-	select BR2_TOOLCHAIN_HAS_NATIVE_RPC
-	select BR2_INSTALL_LIBSTDCPP
-	select BR2_HOSTARCH_NEEDS_IA32_LIBS
-	select BR2_TOOLCHAIN_HEADERS_AT_LEAST_3_5
-	select BR2_TOOLCHAIN_GCC_AT_LEAST_4_7
-	help
-	  Sourcery CodeBench toolchain for the SuperH architecture,
-	  from Mentor Graphics. It uses gcc 4.7.2, binutils 2.23.51,
-	  glibc 2.16, uClibc 0.9.30, gdb 7.4.50 and kernel headers
-	  3.5.4. It has support for the following variants:
-	    - SH4A, glibc, little endian
-	      Default.
-	    - SH4A, glibc, big endian
-	      Add -mb to BR2_TARGET_OPTIMIZATION
-	    - SH4A, uClibc, little endian
-	      Not usable in Buildroot yet.
-	    - SH4A, uClibc, big endian
-	      Not usable in Buildroot yet.

toolchain/toolchain-external/toolchain-external-codesourcery-sh/Config.in.options

@@ -1,9 +0,0 @@
-if BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH
-
-config BR2_TOOLCHAIN_EXTERNAL_PREFIX
-	default "sh-linux-gnu"
-
-config BR2_PACKAGE_PROVIDES_TOOLCHAIN_EXTERNAL
-	default "toolchain-external-codesourcery-sh"
-
-endif

toolchain/toolchain-external/toolchain-external-codesourcery-sh/toolchain-external-codesourcery-sh.hash

@@ -1,3 +0,0 @@
-# Locally calculated
-sha256 59d6766fde244931aa52db01433d5acd051998762a931121c5fc109536a1a802  renesas-2012.09-61-sh-linux-gnu-i686-pc-linux-gnu.tar.bz2
-sha256 e2e58c10e52395d5d35157e35f85233f713c6f9223a652dfc56194cfd2eed004  renesas-2012.09-61-sh-linux-gnu.src.tar.bz2

toolchain/toolchain-external/toolchain-external-codesourcery-sh/toolchain-external-codesourcery-sh.mk

@@ -1,13 +0,0 @@
-################################################################################
-#
-# toolchain-external-sourcery-sh
-#
-################################################################################
-
-TOOLCHAIN_EXTERNAL_CODESOURCERY_SH_VERSION = 2012.09-61
-
-TOOLCHAIN_EXTERNAL_CODESOURCERY_SH_SITE = https://sourcery.mentor.com/public/gnu_toolchain/$(TOOLCHAIN_EXTERNAL_PREFIX)
-TOOLCHAIN_EXTERNAL_CODESOURCERY_SH_SOURCE = renesas-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_SH_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX)-i686-pc-linux-gnu.tar.bz2
-TOOLCHAIN_EXTERNAL_CODESOURCERY_SH_ACTUAL_SOURCE_TARBALL = renesas-$(TOOLCHAIN_EXTERNAL_CODESOURCERY_SH_VERSION)-$(TOOLCHAIN_EXTERNAL_PREFIX).src.tar.bz2
-
-$(eval $(toolchain-external-package))