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authorGravatar Waldemar Brodkorb <wbx@openadk.org>2015-04-08 10:54:55 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2015-05-03 16:30:36 +0200
commit19d5953bf15b9e68d083fc72bcd40b02b7ab810a (patch)
tree79ac8d908ea631ac22b1b3b8f3d32bd788474ac5 /toolchain
parent25206d6e26dc4ce9c272e68876f31d0ca7d30e67 (diff)
downloadbuildroot-19d5953bf15b9e68d083fc72bcd40b02b7ab810a.tar.gz
buildroot-19d5953bf15b9e68d083fc72bcd40b02b7ab810a.tar.bz2
sh4: fix toolchain creation
The Linux kernel does force compile with -m4-nofpu, which is only available when building a multilib toolchain. The interesting part here is, that buildroot use --disable-multilib for gcc configure, but enables --with-multilib-list=m4,m4-nofpu in the default configuration for Qemu targeting r2d emulation. This results in a toolchain, which can be used for the kernel and for userland without creating a multilib toolchain with different kinds of libgcc version. In the multilib case there would be subdirectories created (!m4 and m4-nofpu). As buildroot uses a short version of toolchain creation, a multilib enabled gcc build fails when creating libgcc. So the best solution is to just keep multilib disabled, but always add --with-multilib-list when sh4/sh4eb/sh4a/sh4aeb is choosen. Tested with sh4/sh4a toolchain build and qemu defconfig with gcc 4.8.x/4.9.x (with and without C++ enabled), uClibc and glibc. Disable sh4a/sh4aeb for uClibc, as it does not implemented, yet. Signed-off-by: Waldemar Brodkorb <wbx@openadk.org> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> (ARM and SH4 uClibc toolchain builds)
Diffstat (limited to 'toolchain')
-rw-r--r--toolchain/toolchain-buildroot/Config.in4
1 files changed, 2 insertions, 2 deletions
diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
index 1b4bb9d1ef..d9914b0845 100644
--- a/toolchain/toolchain-buildroot/Config.in
+++ b/toolchain/toolchain-buildroot/Config.in
@@ -32,8 +32,8 @@ config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
depends on BR2_arcle || BR2_arceb || BR2_arm || BR2_armeb || \
BR2_bfin || BR2_i386 || BR2_m68k || \
BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el || \
- BR2_powerpc || BR2_sh || BR2_sparc || BR2_xtensa || \
- BR2_x86_64
+ BR2_powerpc || BR2_sh2a || BR2_sh4 || BR2_sh4eb || \
+ BR2_sparc || BR2_xtensa || BR2_x86_64
help
This option selects uClibc as the C library for the
cross-compilation toolchain.