[Bug 667297] build: Use ACLOCAL_FLAGS only if set in the environment

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=667297
  GStreamer | gstreamer (core) | git

--- Comment #3 from Idar Tollefsen <itollefs at cisco.com> 2012-05-15 14:37:32 UTC ---
There's a longer story behind this. In short, this was done when debugging some
build issues where it turned out that ACLOCAL_FLAGS was set, but not exported,
so they didn't take effect here.

As it stands here, it would only server to get rid of a extra space in the
output when ACLOCAL_FLAGS is empty.

Portable shell code: Probably not. A "if test ..." had been better.

Please close as invalid/irrelevant.

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