toolchain: add coldfire support

Add support for m68k/coldfire. A gcc patch is required
to avoid gcc ICE.

Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

5 files changed, 81 insertions, 0 deletions

diff --git a/package/gcc/4.8.5/891-fix-m68k-uclinux.patch b/package/gcc/4.8.5/891-fix-m68k-uclinux.patch
new file mode 100644
index 0000000000..37c7ac406b
--- /dev/null
+++ b/package/gcc/4.8.5/891-fix-m68k-uclinux.patch
@@ -0,0 +1,18 @@
+avoids internal compiler error while compiling linux-atomic.c
+See here:
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53833
+
+Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
+
+diff -Nur gcc-4.8.5.orig/libgcc/config.host gcc-4.8.5/libgcc/config.host
+--- gcc-4.8.5.orig/libgcc/config.host	2014-03-20 17:12:30.000000000 +0100
++++ gcc-4.8.5/libgcc/config.host	2016-04-27 15:04:01.521171537 +0200
+@@ -689,7 +689,7 @@
+ m68k*-*-openbsd*)
+ 	;;
+ m68k-*-uclinux*)	# Motorola m68k/ColdFire running uClinux with uClibc
+-	tmake_file="$tmake_file m68k/t-floatlib m68k/t-linux"
++	tmake_file="$tmake_file m68k/t-floatlib"
+ 	md_unwind_header=m68k/linux-unwind.h
+ 	;;
+ m68k-*-linux*)			# Motorola m68k's running GNU/Linux
diff --git a/package/gcc/4.9.3/891-fix-m68k-uclinux.patch b/package/gcc/4.9.3/891-fix-m68k-uclinux.patch
new file mode 100644
index 0000000000..4347642d67
--- /dev/null
+++ b/package/gcc/4.9.3/891-fix-m68k-uclinux.patch
@@ -0,0 +1,18 @@
+avoids internal compiler error while compiling linux-atomic.c
+See here:
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53833
+
+Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
+
+diff -Nur gcc-4.9.3.orig/libgcc/config.host gcc-4.9.3/libgcc/config.host
+--- gcc-4.9.3.orig/libgcc/config.host	2014-03-27 16:40:31.000000000 +0100
++++ gcc-4.9.3/libgcc/config.host	2016-04-05 16:20:53.422809885 +0200
+@@ -750,7 +750,7 @@
+ m68k*-*-openbsd*)
+ 	;;
+ m68k-*-uclinux*)	# Motorola m68k/ColdFire running uClinux with uClibc
+-	tmake_file="$tmake_file m68k/t-floatlib m68k/t-linux"
++	tmake_file="$tmake_file m68k/t-floatlib"
+ 	md_unwind_header=m68k/linux-unwind.h
+ 	;;
+ m68k-*-linux*)			# Motorola m68k's running GNU/Linux
diff --git a/package/gcc/5.3.0/891-fix-m68k-uclinux.patch b/package/gcc/5.3.0/891-fix-m68k-uclinux.patch
new file mode 100644
index 0000000000..4e186bd3d3
--- /dev/null
+++ b/package/gcc/5.3.0/891-fix-m68k-uclinux.patch
@@ -0,0 +1,18 @@
+avoids internal compiler error while compiling linux-atomic.c
+See here:
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53833
+
+Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
+
+diff -Nur gcc-5.3.0.orig/libgcc/config.host gcc-5.3.0/libgcc/config.host
+--- gcc-5.3.0.orig/libgcc/config.host	2015-10-01 14:01:18.000000000 +0200
++++ gcc-5.3.0/libgcc/config.host	2016-04-26 21:30:25.353691745 +0200
+@@ -794,7 +794,7 @@
+ m68k*-*-openbsd*)
+ 	;;
+ m68k-*-uclinux*)	# Motorola m68k/ColdFire running uClinux with uClibc
+-	tmake_file="$tmake_file m68k/t-floatlib m68k/t-linux"
++	tmake_file="$tmake_file m68k/t-floatlib"
+ 	md_unwind_header=m68k/linux-unwind.h
+ 	;;
+ m68k-*-linux*)			# Motorola m68k's running GNU/Linux
diff --git a/package/gcc/6.1.0/891-fix-m68k-uclinux.patch b/package/gcc/6.1.0/891-fix-m68k-uclinux.patch
new file mode 100644
index 0000000000..754aa74e88
--- /dev/null
+++ b/package/gcc/6.1.0/891-fix-m68k-uclinux.patch
@@ -0,0 +1,18 @@
+avoids internal compiler error while compiling linux-atomic.c
+See here:
+https://gcc.gnu.org/bugzilla/show_bug.cgi?id=53833
+
+Signed-off-by: Waldemar Brodkorb <wbx@openadk.org>
+
+diff -Nur gcc-6.1.0.orig/libgcc/config.host gcc-6.1.0/libgcc/config.host
+--- gcc-6.1.0.orig/libgcc/config.host	2016-02-26 21:02:28.000000000 +0100
++++ gcc-6.1.0/libgcc/config.host	2016-04-29 09:18:40.377989160 +0200
+@@ -812,7 +812,7 @@
+ m68k*-*-openbsd*)
+ 	;;
+ m68k-*-uclinux*)	# Motorola m68k/ColdFire running uClinux with uClibc
+-	tmake_file="$tmake_file m68k/t-floatlib m68k/t-linux"
++	tmake_file="$tmake_file m68k/t-floatlib"
+ 	md_unwind_header=m68k/linux-unwind.h
+ 	;;
+ m68k-*-linux*)			# Motorola m68k's running GNU/Linux
diff --git a/package/gcc/gcc-final/gcc-final.mk b/package/gcc/gcc-final/gcc-final.mk
index 69fdc0c059..1d1d72e6e7 100644
--- a/package/gcc/gcc-final/gcc-final.mk
+++ b/package/gcc/gcc-final/gcc-final.mk
@@ -125,6 +125,15 @@ endef
 HOST_GCC_FINAL_POST_INSTALL_HOOKS += HOST_GCC_FINAL_LD_LINUX_LINK
 endif
 
+# coldfire is not working without removing these object files from libgcc.a
+ifeq ($(BR2_m68k_cf),y)
+define HOST_GCC_FINAL_M68K_LIBGCC_FIXUP
+	find $(STAGING_DIR) -name libgcc.a -print | \
+		while read t; do $(GNU_TARGET_NAME)-ar dv "$t" _ctors.o; done
+endef
+HOST_GCC_FINAL_POST_INSTALL_HOOKS += HOST_GCC_FINAL_M68K_LIBGCC_FIXUP
+endif
+
 # Cannot use the HOST_GCC_FINAL_USR_LIBS mechanism below, because we want
 # libgcc_s to be installed in /lib and not /usr/lib.
 define HOST_GCC_FINAL_INSTALL_LIBGCC