Only set SOURCE_DATE_EPOCH if it's not already set
authorFabian Keil <fk@fabiankeil.de>
Thu, 12 Nov 2020 09:54:14 +0000 (10:54 +0100)
committerFabian Keil <fk@fabiankeil.de>
Wed, 18 Nov 2020 11:01:49 +0000 (12:01 +0100)
commitf2703aac8caa26ca628d6d6601a89bf676ebed34
tree55d0085f973844adbbf7a9f3d910a457817875dd
parente31a6785cfe85c044233b0fe3ea9a0bae37ab51f
Only set SOURCE_DATE_EPOCH if it's not already set

... so distributions can overwrite it through the environment.
GNUmakefile.in