appveyor.yml: Cache NASM binary package

... since www.nasm.us seems to be down frequently.  This doesn't help us
at the moment, but hopefully once the site is back up this will prevent
future build failures.

diff --git a/appveyor.yml b/appveyor.yml
index f3bf8b1c9dd92ff316485261adad06c7252a968f..cee15e91d3de019d115fb878a3e49116d010e619 100644 (file)
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -1,10 +1,10 @@
 install:
   - cmd: >-
-      mkdir c:\installers
+      if not exist c:\installers mkdir c:\installers
 
       mkdir c:\temp
 
-      curl -fSL -o c:\installers\nasm-2.10.01-win32.zip http://www.nasm.us/pub/nasm/releasebuilds/2.10.01/win32/nasm-2.10.01-win32.zip
+      if not exist c:\installers\nasm-2.10.01-win32.zip curl -fSL -o c:\installers\nasm-2.10.01-win32.zip http://www.nasm.us/pub/nasm/releasebuilds/2.10.01/win32/nasm-2.10.01-win32.zip
 
       7z x c:\installers\nasm-2.10.01-win32.zip -oc:\ > c:\installers\nasm.install.log
 
@@ -22,6 +22,9 @@ install:
 
       git clone --depth=1 https://github.com/libjpeg-turbo/buildscripts.git -b %APPVEYOR_REPO_BRANCH% c:/buildscripts
 
+cache:
+  - c:\installers\nasm-2.10.01-win32.zip -> appveyor.yml
+
 build_script:
   - cmd: >-
       for /f %%i in ('"cygpath %CD%"') do set MINGWPATH=%%i