Build a backend binary using AppVeyor's Ubuntu image

backend/Makefile

@@ -1,10 +1,15 @@
+STRIP ?= strip
+
 all : ../out/wslbridge-backend
 
 ../out/wslbridge-backend : wslbridge-backend.cc ../common/SocketIo.cc ../common/SocketIo.h ../VERSION.txt Makefile
 	mkdir -p ../out
-	g++ -std=c++11 -fno-exceptions \
+	$(CXX) -std=c++11 -fno-exceptions \
 		-static-libgcc -static-libstdc++ \
 		-D_GNU_SOURCE \
 		-DWSLBRIDGE_VERSION=$(shell cat ../VERSION.txt) \
 		-Wall -O2 $< ../common/SocketIo.cc -o $@ -lutil -pthread
-	strip $@
+	$(STRIP) $@
+
+clean:
+	rm -f ../out/wslbridge-backend

dist/cygwin-prebuilts/make-cygwin-prebuilts.py

@@ -15,6 +15,7 @@
 from util import glob_paths, rmpath, mkdirs, buildTimeStamp, projectDir, getGppVer
 
 
+sys.platform == 'win32' or sys.exit('error: script only runs on Windows (no Cygwin/MSYS)')
 shutil.which('7z')      or sys.exit('error: 7z missing')
 shutil.which('curl')    or sys.exit('error: curl missing')
 

dist/cygwin-prebuilts/make-msys2-prebuilts.py

@@ -28,6 +28,7 @@ def checkSha256(path, expected):
             path, expected, actual))
 
 
+sys.platform == 'win32' or sys.exit('error: script only runs on Windows (no Cygwin/MSYS)')
 shutil.which('7z')      or sys.exit('error: 7z missing')
 shutil.which('curl')    or sys.exit('error: curl missing')
 

dist/frontend/appveyor.yml

@@ -1,12 +1,27 @@
+image:
+  - Ubuntu
+  - Visual Studio 2017
+
 environment:
   matrix:
-    - CYGWIN_VARIANT: cygwin32
-    - CYGWIN_VARIANT: cygwin64
-    - CYGWIN_VARIANT: msys32
-    - CYGWIN_VARIANT: msys64
+    - { COMPONENT: frontend, CYGWIN_VARIANT: cygwin32 }
+    - { COMPONENT: frontend, CYGWIN_VARIANT: cygwin64 }
+    - { COMPONENT: frontend, CYGWIN_VARIANT: msys32 }
+    - { COMPONENT: frontend, CYGWIN_VARIANT: msys64 }
+    - { COMPONENT: backend }
+
+matrix:
+  exclude:
+    - { image: Ubuntu,              COMPONENT: frontend }
+    - { image: Visual Studio 2017,  COMPONENT: backend }
 
-build_script:
-  - C:\Python36-x64\python.exe dist\frontend\make-frontend-packages.py
+for:
+  - matrix: { only: [ COMPONENT: backend ] }
+    build_script:
+      - python3 dist/frontend/make-backend-package.py
+  - matrix: { only: [ COMPONENT: frontend ] }
+    build_script:
+      - C:\Python35-x64\python.exe dist\frontend\make-frontend-packages.py
 
 artifacts:
-  - path: out\artifact\*-frontend.tar.xz
+  - path: out\artifact\*.tar.gz

dist/frontend/make-backend-package.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python3
+import os
+import sys
+sys.path.insert(1, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+import util
+
+import shutil
+
+from os.path import abspath
+from subprocess import check_call
+from util import projectDir, rmpath, mkdirs
+
+sys.platform == 'linux' or sys.exit('error: script only runs on Linux')
+shutil.which('git')     or sys.exit('error: git missing')
+shutil.which('make')    or sys.exit('error: make missing')
+shutil.which('tar')     or sys.exit('error: tar missing')
+
+buildDir = os.path.join(projectDir, 'out', 'build-backend')
+artifactDir = os.path.join(projectDir, 'out', 'artifact')
+
+rmpath(buildDir)
+mkdirs(buildDir)
+mkdirs(artifactDir)
+
+os.chdir(buildDir)
+
+prebuiltUrl = 'https://github.com/rprichard/x86_64-linux-glibc2.15-4.8.git'
+prebuiltPath = abspath('linux-prebuilt')
+artifactPath = os.path.join(artifactDir, 'backend.tar.gz')
+
+check_call(['git', 'clone', prebuiltUrl, prebuiltPath])
+
+os.putenv('CXX',   os.path.join(prebuiltPath, 'bin', 'x86_64-linux-g++'))
+os.putenv('STRIP', os.path.join(prebuiltPath, 'bin', 'x86_64-linux-strip'))
+check_call(['make', 'clean'], cwd=os.path.join(projectDir, 'backend'))
+check_call(['make'],          cwd=os.path.join(projectDir, 'backend'))
+check_call(['tar', 'cfa', artifactPath, '-C', '..', 'wslbridge-backend'])

dist/frontend/make-frontend-packages.py

@@ -10,6 +10,7 @@
 from subprocess import check_call
 from util import projectDir, rmpath, mkdirs
 
+sys.platform == 'win32' or sys.exit('error: script only runs on Windows (no Cygwin/MSYS)')
 shutil.which('7z')      or sys.exit('error: 7z missing')
 shutil.which('curl')    or sys.exit('error: curl missing')
 
@@ -39,16 +40,13 @@
     check_call(['curl', '-fL', url, '-o', '{}.7z'.format(platform)])
     check_call(['7z', 'x', '{}.7z'.format(platform)])
 
-    # XXX: There is no 'make clean', so do it inline. There are no intermediate
-    # build files.
-    rmpath(os.path.join(projectDir, 'out', 'wslbridge.exe'))
-
     platformBinDir = abspath(os.path.join(platform, binDir))
-    artifactPath = os.path.join(artifactDir, '{}-frontend.tar.xz'.format(platform))
+    artifactPath = os.path.join(artifactDir, '{}-frontend.tar.gz'.format(platform))
 
     origPATH = os.getenv('PATH')
     os.putenv('PATH', platformBinDir + os.pathsep + origPATH)
-    check_call([os.path.join(platformBinDir, 'make.exe')], cwd=os.path.join(projectDir, 'frontend'))
+    check_call([os.path.join(platformBinDir, 'make.exe'), 'clean'], cwd=os.path.join(projectDir, 'frontend'))
+    check_call([os.path.join(platformBinDir, 'make.exe')],          cwd=os.path.join(projectDir, 'frontend'))
     check_call([os.path.join(platformBinDir, 'tar.exe'), 'cfa',
                 relpath(artifactPath, os.getcwd()).replace('\\', '/'),
                 '-C', '..', 'wslbridge.exe'])

dist/util.py

@@ -1,8 +1,7 @@
 import sys
 
 # Install Python from https://www.python.org.
-(sys.version_info[0:2] >= (3, 6))   or sys.exit('error: script requires Python 3.6 or above')
-sys.platform == 'win32'             or sys.exit('error: script only runs on Windows (no Cygwin/MSYS)')
+(sys.version_info[0:2] >= (3, 5))   or sys.exit('error: script requires Python 3.5 or above')
 
 import os
 import re

frontend/Makefile

@@ -1,10 +1,15 @@
+STRIP ?= strip
+
 all : ../out/wslbridge.exe
 
 ../out/wslbridge.exe : wslbridge.cc ../common/SocketIo.cc ../common/SocketIo.h ../VERSION.txt Makefile
 	mkdir -p ../out
-	g++ -std=c++11 -fno-exceptions \
+	$(CXX) -std=c++11 -fno-exceptions \
 		-static -static-libgcc -static-libstdc++ \
 		-D_GNU_SOURCE -D_WIN32_WINNT=0x0600 -DUNICODE -D_UNICODE \
 		-DWSLBRIDGE_VERSION=$(shell cat ../VERSION.txt) \
 		-Wall -O2 $< ../common/SocketIo.cc -o $@
-	strip $@
+	$(STRIP) $@
+
+clean:
+	rm -f ../out/wslbridge.exe