[Buildroot] [PATCH v3 1/6] package/go: Build host tools with host CC
Geoff Levand
geoff at infradead.org
Thu May 26 18:21:32 UTC 2016
The go build system doesn't have the notion of cross compiling, but just the
notion of architecture. When the host and target architectures are different
it expects to be given a target cross compiler in CC_FOR_TARGET. When the
architectures are the same it will use CC_FOR_TARGET for both host and target
compilation. To work around this limitation build and install a set of
compiler and tool binaries built with CC_FOR_TARGET set to the host compiler.
Also, the go build system is not compatible with ccache, so use
HOSTCC_NOCCACHE. See https://github.com/golang/go/issues/11685.
Fixes build errors like these:
host/usr/bin/go: No such file or directory
http://autobuild.buildroot.net/results/6664189a6f3a815978e8d0a1d7ef408ca47e2874/
Signed-off-by: Geoff Levand <geoff at infradead.org>
---
package/go/go.mk | 29 +++++++++++++++++++++++++----
1 file changed, 25 insertions(+), 4 deletions(-)
diff --git a/package/go/go.mk b/package/go/go.mk
index a9e16dd..7ac2540 100644
--- a/package/go/go.mk
+++ b/package/go/go.mk
@@ -35,6 +35,14 @@ endif
HOST_GO_DEPENDENCIES = host-go-bootstrap
HOST_GO_ROOT = $(HOST_DIR)/usr/lib/go
+# The go build system doesn't have the notion of cross compiling, but just the
+# notion of architecture. When the host and target architectures are different
+# it expects to be given a target cross compiler in CC_FOR_TARGET. When the
+# architectures are the same it will use CC_FOR_TARGET for both host and target
+# compilation. To work around this limitation build and install a set of
+# compiler and tool binaries built with CC_FOR_TARGET set to the host compiler.
+# Also, the go build system is not compatible with ccache, so use
+# HOSTCC_NOCCACHE. See https://github.com/golang/go/issues/11685.
HOST_GO_MAKE_ENV = \
GOROOT_BOOTSTRAP=$(HOST_GO_BOOTSTRAP_ROOT) \
GOROOT_FINAL=$(HOST_GO_ROOT) \
@@ -44,16 +52,29 @@ HOST_GO_MAKE_ENV = \
$(if $(GO_GOARM),GOARM=$(GO_GOARM)) \
GOOS=linux \
CGO_ENABLED=1 \
+ CC=$(HOSTCC_NOCCACHE)
+
+HOST_GO_TARGET_CC = \
CC_FOR_TARGET=$(TARGET_CC) \
CXX_FOR_TARGET=$(TARGET_CXX)
+HOST_GO_HOST_CC = \
+ CC_FOR_TARGET=$(HOSTCC_NOCCACHE) \
+ CXX_FOR_TARGET=$(HOSTCC_NOCCACHE)
+
+HOST_GO_TMP = $(@D)/host-go-tmp
+
define HOST_GO_BUILD_CMDS
- cd $(@D)/src && $(HOST_GO_MAKE_ENV) ./make.bash
+ cd $(@D)/src && $(HOST_GO_MAKE_ENV) $(HOST_GO_HOST_CC) ./make.bash
+ mkdir -p $(HOST_GO_TMP)
+ mv $(@D)/pkg/tool $(HOST_GO_TMP)/
+ mv $(@D)/bin/ $(HOST_GO_TMP)/
+ cd $(@D)/src && $(HOST_GO_MAKE_ENV) $(HOST_GO_TARGET_CC) ./make.bash
endef
define HOST_GO_INSTALL_CMDS
- $(INSTALL) -D -m 0755 $(@D)/bin/go $(HOST_GO_ROOT)/bin/go
- $(INSTALL) -D -m 0755 $(@D)/bin/gofmt $(HOST_GO_ROOT)/bin/gofmt
+ $(INSTALL) -D -m 0755 $(HOST_GO_TMP)/bin/go $(HOST_GO_ROOT)/bin/go
+ $(INSTALL) -D -m 0755 $(HOST_GO_TMP)/bin/gofmt $(HOST_GO_ROOT)/bin/gofmt
ln -sf ../lib/go/bin/go $(HOST_DIR)/usr/bin/
ln -sf ../lib/go/bin/gofmt $(HOST_DIR)/usr/bin/
@@ -62,7 +83,7 @@ define HOST_GO_INSTALL_CMDS
mkdir -p $(HOST_GO_ROOT)/pkg
cp -a $(@D)/pkg/include $(@D)/pkg/linux_* $(HOST_GO_ROOT)/pkg/
- cp -a $(@D)/pkg/tool $(HOST_GO_ROOT)/pkg/
+ cp -a $(HOST_GO_TMP)/tool $(HOST_GO_ROOT)/pkg/
# There is a known issue which requires the go sources to be installed
# https://golang.org/issue/2775
--
2.5.0
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