Fix parallel make for libffi.
authorDuncan Coutts <duncan@well-typed.com>
Thu, 30 Apr 2009 13:56:37 +0000 (13:56 +0000)
committerDuncan Coutts <duncan@well-typed.com>
Thu, 30 Apr 2009 13:56:37 +0000 (13:56 +0000)
commitb547f2e28b0f07b089aada1164c1dd834f894996
treed06f61a1ec5270ccd8dd2c1eb121aaf7f65d8adb
parent31796c5c0312aa9a04f3519fa32b0f15b9a14541
Fix parallel make for libffi.
I didn't realise make can invoke the same action multiple
times in parallel if the rule has multiple targets. So go
back to using a build stamp file.
libffi/ghc.mk