This patch is required in case if you are using new toolchains.
Best regards,
Maxim Uvarov.
From: Maxim Uvarov <muva...@gmail.com>
Linker does not provide some vital functions when building freestanding
applications with a new toolchain, so we have to provide our own CRT.
p.s.
Without the CRT we won't see any build errors (since the purgatory is
linked with --no-undefined), but the purgatory code won't work,
'kexec -e' will just hang the board.
I added option to configure to keep code buildable for old toolchais.
But there should be way to do this automatically.
Author: Anton Vorontsov <avoront...@ru.mvista.com>
Signed-off-by: Maxim Uvarov <muva...@gmail.com>
---
configure.ac | 9 +++++++++
purgatory/arch/ppc/Makefile | 3 +++
2 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/configure.ac b/configure.ac
index fcf50e4..63606bc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -159,6 +159,15 @@ if test "$with_xen" = yes ; then
AC_MSG_NOTICE([Xen support disabled])))
fi
+dnl new toolchains
+if test "$ARCH" = ppc; then
+AC_ARG_WITH([oldtoolchain],
+ AC_HELP_STRING([--with-oldtoolchain],[compile without crt.S
+ required for new toolchains]),
+ AC_DEFINE(PPC_OLDTOOLCHAIN, 1,
+ [Define to compile with old toolchains]))
+fi
+
dnl ---Sanity checks
if test "$CC" = "no"; then AC_MSG_ERROR([cc not found]); fi
if test "$CPP" = "no"; then AC_MSG_ERROR([cpp not found]); fi
diff --git a/purgatory/arch/ppc/Makefile b/purgatory/arch/ppc/Makefile
index 72289a0..d11ec3e 100644
--- a/purgatory/arch/ppc/Makefile
+++ b/purgatory/arch/ppc/Makefile
@@ -6,6 +6,9 @@ ppc_PURGATORY_SRCS += purgatory/arch/ppc/v2wrap_32.S
ppc_PURGATORY_SRCS += purgatory/arch/ppc/misc.S
ppc_PURGATORY_SRCS += purgatory/arch/ppc/purgatory-ppc.c
ppc_PURGATORY_SRCS += purgatory/arch/ppc/console-ppc.c
+ifndef PPC_OLDTOOLCHAIN
+ ppc_PURGATORY_SRCS += purgatory/arch/ppc/crt.S
+endif
dist += purgatory/arch/ppc/Makefile $(ppc_PURGATORY_SRCS) \
purgatory/arch/ppc/purgatory-ppc.h purgatory/arch/ppc/ppc_asm.h
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
