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golang: Add support for ASLR/PIE for Go packages

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This adds support to compile position-independent executables for
packages that use golang-package.mk.

Go packages will have PIE enabled if:
* Go supports PIE on the target platform;
* CONFIG_PKG_ASLR_PIE is selected; and
* PKG_ASLR_PIE (for the package) is not set to 0

Go 1.13 supports PIE for x86 and arm targets; mips support is in
progress[1].

[1]: https://github.com/golang/go/issues/21222#issuecomment-542064462

Signed-off-by: Jeffery To <jeffery.to@gmail.com>
This commit is contained in:
Jeffery To 2020-01-14 22:17:21 +08:00
parent b36f27716f
commit c18adadd91
1 changed files with 9 additions and 0 deletions
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9
lang/golang/golang-package.mk
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@ -120,6 +120,14 @@ GO_PKG_BUILD_BIN_DIR:=$(GO_PKG_BUILD_DIR)/bin$(if $(GO_HOST_TARGET_DIFFERENT),/$
GO_PKG_BUILD_DEPENDS_SRC:=$(STAGING_DIR)$(GO_PKG_PATH)/src GO_PKG_BUILD_DEPENDS_SRC:=$(STAGING_DIR)$(GO_PKG_PATH)/src
ifeq ($(CONFIG_PKG_ASLR_PIE),y)
ifeq ($(strip $(PKG_ASLR_PIE)),1)
ifeq ($(GO_TARGET_PIE_SUPPORTED),1)
GO_PKG_ENABLE_PIE:=1
endif
endif
endif
# sstrip causes corrupted section header size # sstrip causes corrupted section header size
ifneq ($(CONFIG_USE_SSTRIP),) ifneq ($(CONFIG_USE_SSTRIP),)
ifneq ($(CONFIG_DEBUG),) ifneq ($(CONFIG_DEBUG),)
@ -281,6 +289,7 @@ define GoPackage/Build/Compile
pkg_ldflags="$$$$pkg_ldflags -X $$$$def" ; \ pkg_ldflags="$$$$pkg_ldflags -X $$$$def" ; \
done ; \ done ; \
go install \ go install \
$(if $(GO_PKG_ENABLE_PIE),-buildmode pie) \
$$$${installsuffix:+-installsuffix $$$$installsuffix} \ $$$${installsuffix:+-installsuffix $$$$installsuffix} \
-trimpath \ -trimpath \
-ldflags "all=$$$$ldflags" \ -ldflags "all=$$$$ldflags" \