gcc: optionally build gccgo compiler

Tested with eglibc on x86 and armv7 so far

Signed-off-by: Matteo Croce <matteo.croce@canonical.com>

diff --git a/toolchain/gcc/Config.in b/toolchain/gcc/Config.in
index 47425338c3c10f629d9e9e50588c987ea690b93c..41ea61cb8a06f2e1f3240ae996a213939b9c8790 100644 (file)
--- a/toolchain/gcc/Config.in
+++ b/toolchain/gcc/Config.in
@@ -70,3 +70,11 @@ config INSTALL_GFORTRAN
        default n
        help
            Build/install GNU fortran compiler ?
+
+config INSTALL_GCCGO
+       bool
+       prompt "Build/install Go compiler?" if TOOLCHAINOPTS
+       depends on !GCC_VERSION_4_8 && (USE_GLIBC || BROKEN)
+       default n
+       help
+           Build/install GNU gccgo compiler ?

diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
index 14b6682df14606da00f9250d33060de3d946e301..4220cf54f3ccbd039cc5ac4245e3f47961f23f51 100644 (file)
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -69,12 +69,15 @@ HOST_STAMP_CONFIGURED:=$(GCC_BUILD_DIR)/.configured
 HOST_STAMP_INSTALLED:=$(STAGING_DIR_HOST)/stamp/.gcc_$(GCC_VARIANT)_installed
 
 SEP:=,
-TARGET_LANGUAGES:="c,c++$(if $(CONFIG_INSTALL_LIBGCJ),$(SEP)java)$(if $(CONFIG_INSTALL_GFORTRAN),$(SEP)fortran)"
+TARGET_LANGUAGES:="c,c++$(if $(CONFIG_INSTALL_LIBGCJ),$(SEP)java)$(if $(CONFIG_INSTALL_GFORTRAN),$(SEP)fortran)$(if $(CONFIG_INSTALL_GCCGO),$(SEP)go)"
 
 export libgcc_cv_fixed_point=no
 ifdef CONFIG_USE_UCLIBC
   export glibcxx_cv_c99_math_tr1=no
 endif
+ifdef CONFIG_INSTALL_GCCGO
+  export libgo_cv_c_split_stack_supported=no
+endif
 
 ifdef CONFIG_GCC_USE_GRAPHITE
   ifdef CONFIG_GCC_VERSION_4_8
@@ -164,12 +167,17 @@ ifneq ($(CONFIG_SOFT_FLOAT),y)
   endif
 endif
 
+ifeq ($(CONFIG_TARGET_x86)$(CONFIG_USE_GLIBC)$(CONFIG_INSTALL_GCCGO),yyy)
+  TARGET_CFLAGS+=-fno-split-stack
+endif
+
 GCC_MAKE:= \
        export SHELL="$(BASH)"; \
        $(MAKE) \
                CFLAGS="$(HOST_CFLAGS)" \
                CFLAGS_FOR_TARGET="$(TARGET_CFLAGS)" \
-               CXXFLAGS_FOR_TARGET="$(TARGET_CFLAGS)"
+               CXXFLAGS_FOR_TARGET="$(TARGET_CFLAGS)" \
+               GOCFLAGS_FOR_TARGET="$(TARGET_CFLAGS)"
 
 define Host/SetToolchainInfo
        $(SED) 's,TARGET_CROSS=.*,TARGET_CROSS=$(REAL_GNU_TARGET_NAME)-,' $(TOOLCHAIN_DIR)/info.mk

diff --git a/toolchain/gcc/final/Makefile b/toolchain/gcc/final/Makefile
index 3434d894a2b501ba9545c99d47066fc43a7b5480..01fec380273752d01c10046f476f785ec34b92aa 100644 (file)
--- a/toolchain/gcc/final/Makefile
+++ b/toolchain/gcc/final/Makefile
@@ -39,7 +39,16 @@ define Host/Configure
        );
 endef
 
+ifeq ($(CONFIG_USE_GLIBC)$(CONFIG_INSTALL_GCCGO),yy)
+define FixGogccCrt
+       # link crtX.o for gotools
+       mkdir -p $(GCC_BUILD_DIR)/gotools
+       $(foreach crt, i 1 n, ln -sf ../../glibc-dev/lib/crt$(crt).o $(GCC_BUILD_DIR)/gotools/ ; )
+endef
+endif
+
 define Host/Compile
+       $(FixGogccCrt)
        +$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) all
 endef
 

diff --git a/toolchain/gcc/patches/5.4.0/960-go_libm.patch b/toolchain/gcc/patches/5.4.0/960-go_libm.patch
new file mode 100644 (file)
index 0000000..d16b020
--- /dev/null
+++ b/toolchain/gcc/patches/5.4.0/960-go_libm.patch
@@ -0,0 +1,11 @@
+--- a/gcc/go/Make-lang.in
++++ b/gcc/go/Make-lang.in
+@@ -74,7 +74,7 @@ go_OBJS = $(GO_OBJS) go/gospec.o
+ 
+ go1$(exeext): $(GO_OBJS) attribs.o $(BACKEND) $(LIBDEPS)
+       +$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
+-            $(GO_OBJS) attribs.o $(BACKEND) $(LIBS) $(BACKENDLIBS)
++            $(GO_OBJS) attribs.o $(BACKEND) $(LIBS) $(BACKENDLIBS) -lm
+ 
+ # Documentation.
+ 

diff --git a/toolchain/gcc/patches/5.4.0/970-warn_bug.patch b/toolchain/gcc/patches/5.4.0/970-warn_bug.patch
new file mode 100644 (file)
index 0000000..2c5cf9b
--- /dev/null
+++ b/toolchain/gcc/patches/5.4.0/970-warn_bug.patch
@@ -0,0 +1,11 @@
+--- a/libgo/runtime/mprof.goc
++++ b/libgo/runtime/mprof.goc
+@@ -403,7 +403,7 @@ func ThreadCreateProfile(p Slice) (n int
+ 
+ func Stack(b Slice, all bool) (n int) {
+       byte *pc, *sp;
+-      bool enablegc;
++      bool enablegc = false; /* workaround GCC bug #36550 */
+       
+       sp = runtime_getcallersp(&b);
+       pc = (byte*)(uintptr)runtime_getcallerpc(&b);