/usr/share/cross-gcc/patches/gcc-6/0006-Allow-target-selection-via-dpkg-buildpackage-target-.patch is in cross-gcc-dev 176.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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From: Helmut Grohne <helmut@subdivi.de>
Date: Thu, 18 Dec 2014 14:39:19 -0800
Subject: [PATCH 06/11] Allow target selection via dpkg-buildpackage
--target-arch. Closes: #773065
---
debian/rules.defs | 52 ++++++++++++++++------------------------------------
1 file changed, 16 insertions(+), 36 deletions(-)
diff --git a/debian/rules.defs b/debian/rules.defs
index 4f84266..b1faa92 100644
--- a/debian/rules.defs
+++ b/debian/rules.defs
@@ -39,23 +39,7 @@ vafilt = $(subst $(2)=,,$(filter $(2)=%,$(1)))
# for rules.sonames
vafilt_defined = 1
-dpkg_target_vars := $(shell (dpkg-architecture | grep -q DEB_TARGET) && echo yes)
-ifeq ($(dpkg_target_vars),yes)
- DEB_TARGET_ARCH=
- DEB_TARGET_ARCH_BITS=
- DEB_TARGET_ARCH_CPU=
- DEB_TARGET_ARCH_ENDIAN=
- DEB_TARGET_ARCH_OS=
- DEB_TARGET_GNU_CPU=
- DEB_TARGET_GNU_SYSTEM=
- DEB_TARGET_GNU_TYPE=
- DEB_TARGET_MULTIARCH=
-endif
-
DPKG_VARS := $(shell dpkg-architecture)
-ifeq ($(dpkg_target_vars),yes)
- DPKG_VARS := $(filter-out DEB_TARGET_%, $(DPKG_VARS))
-endif
DEB_BUILD_ARCH ?= $(call vafilt,$(DPKG_VARS),DEB_BUILD_ARCH)
DEB_BUILD_GNU_TYPE ?= $(call vafilt,$(DPKG_VARS),DEB_BUILD_GNU_TYPE)
DEB_BUILD_MULTIARCH ?= $(call vafilt,$(DPKG_VARS),DEB_BUILD_MULTIARCH)
@@ -122,7 +106,7 @@ export LIBC_FATAL_STDERR_=1
# ---------------------------------------------------------------------------
# set target
-# - GNU triplet via DEB_TARGET_GNU_TYPE
+# - dpkg-buildpackage --target-arch (via DEB_TARGET_ARCH)
# - Debian arch in debian/target
# - Debian arch via DEB_GCC_TARGET or GCC_TARGET
#
@@ -130,32 +114,28 @@ export LIBC_FATAL_STDERR_=1
ifdef GCC_TARGET
DEB_GCC_TARGET := $(GCC_TARGET)
endif
-ifdef DEB_TARGET_GNU_TYPE
- TARGET_VARS := $(shell dpkg-architecture -f -t$(DEB_TARGET_GNU_TYPE) 2>/dev/null)
-else
- # allow debian/target to be used instead of DEB_GCC_TARGET - this was requested
- # by toolchain-source maintainer
- DEBIAN_TARGET_FILE := $(strip $(if $(wildcard debian/target),$(shell cat debian/target 2>/dev/null)))
- ifndef DEB_TARGET_ARCH
- ifneq (,$(DEBIAN_TARGET_FILE))
- DEB_TARGET_ARCH := $(DEBIAN_TARGET_FILE)
- else
- ifdef DEB_GCC_TARGET
- DEB_TARGET_ARCH := $(DEB_GCC_TARGET)
- else
- DEB_TARGET_ARCH := $(DEB_HOST_ARCH)
- endif
+# since dpkg 1.17.14, DEB_TARGET_* default to DEB_HOST_*
+DEB_TARGET_ARCH ?= $(DEB_HOST_ARCH)
+# allow debian/target to be used instead of DEB_GCC_TARGET - this was requested
+# by toolchain-source maintainer
+DEBIAN_TARGET_FILE := $(strip $(if $(wildcard debian/target),$(shell cat debian/target 2>/dev/null)))
+# consider DEB_TARGET_* set, if it differs from DEB_HOST_*
+ifeq ($(DEB_TARGET_ARCH),$(DEB_HOST_ARCH))
+ ifneq (,$(DEBIAN_TARGET_FILE))
+ DEB_TARGET_ARCH := $(DEBIAN_TARGET_FILE)
+ else
+ ifdef DEB_GCC_TARGET
+ DEB_TARGET_ARCH := $(DEB_GCC_TARGET)
endif
endif
- TARGET_VARS := $(shell dpkg-architecture -f -a$(DEB_TARGET_ARCH) 2>/dev/null)
-endif
-ifeq ($(dpkg_target_vars),yes)
- TARGET_VARS := $(filter-out DEB_TARGET_%, $(TARGET_VARS))
endif
+TARGET_VARS := $(shell dpkg-architecture -f -a$(DEB_TARGET_ARCH) 2>/dev/null)
DEB_TARGET_ARCH := $(call vafilt,$(TARGET_VARS),DEB_HOST_ARCH)
+DEB_TARGET_ARCH_BITS := $(call vafilt,$(TARGET_VARS),DEB_HOST_ARCH_BITS)
DEB_TARGET_ARCH_OS := $(call vafilt,$(TARGET_VARS),DEB_HOST_ARCH_OS)
DEB_TARGET_ARCH_CPU := $(call vafilt,$(TARGET_VARS),DEB_HOST_ARCH_CPU)
+DEB_TARGET_ARCH_ENDIAN := $(call vafilt,$(TARGET_VARS),DEB_HOST_ARCH_ENDIAN)
DEB_TARGET_GNU_CPU := $(call vafilt,$(TARGET_VARS),DEB_HOST_GNU_CPU)
DEB_TARGET_GNU_TYPE := $(call vafilt,$(TARGET_VARS),DEB_HOST_GNU_TYPE)
DEB_TARGET_GNU_SYSTEM := $(call vafilt,$(TARGET_VARS),DEB_HOST_GNU_SYSTEM)
--
2.14.1
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