Add support for linux/s390x

.gitlab-ci.yml

@@ -80,6 +80,7 @@ default:
   - linux amd64
   - linux arm
   - linux arm64
+  - linux s390x
   - windows amd64
   - darwin amd64
   variables:
@@ -110,6 +111,7 @@ openbsd amd64: *build_x
 windows amd64: *build_x
 linux arm: *build_x
 linux arm64: *build_x
+linux s390x: *build_x
 
 release development S3:
   extends:

.travis.yml

@@ -10,6 +10,7 @@ env:
     - TARGET_OS=windows TARGET_ARCH=amd64 TARGETS="build-x"
     - TARGET_OS=linux TARGET_ARCH=arm TARGETS="build-x"
     - TARGET_OS=linux TARGET_ARCH=arm64 TARGETS="build-x"
+    - TARGET_OS=linux TARGET_ARCH=s390x TARGETS="build-x"
 script:
     - USE_CONTAINER=true make "$TARGETS"
     - "[[ \"$(find bin -type f -name docker-machine*)\" != \"\" ]]"

Makefile.inc

@@ -22,7 +22,7 @@ ifeq ($(TARGET_OS),)
 endif
 
 ifeq ($(TARGET_ARCH),)
-  TARGET_ARCH := amd64 arm arm64 386
+  TARGET_ARCH := amd64 arm arm64 s390x 386
 endif
 
 # Output prefix, defaults to local directory if not specified

mk/build.mk

 extension = $(patsubst windows,.exe,$(filter windows,$(1)))
 
 # Valid target combinations
-VALID_OS_ARCH := "[darwin/amd64][linux/amd64][linux/arm][linux/arm64][openbsd/amd64][windows/amd64][windows/386]"
+VALID_OS_ARCH := "[darwin/amd64][linux/amd64][linux/arm][linux/arm64][linux/s390x][openbsd/amd64][windows/amd64][windows/386]"
 
 os.darwin := Darwin
 os.linux := Linux
@@ -11,6 +11,7 @@ os.windows := Windows
 arch.amd64 := x86_64
 arch.arm := armhf
 arch.arm64 := aarch64
+arch.s390x := s390x
 arch.386 := i386
 
 define gocross