tree 95d647a0e440b1e6d02c2ef3098470e23885ff33
parent 5fd118744cdc05f155eb93671e5605a3494172b0
author Idar Tollefsen <itollefs@cisco.com> 1484836098 +0100
committer Idar Tollefsen <itollefs@cisco.com> 1485426258 +0100

configure.in: Changes empty CFLAGS check to be (more) shell neutral.

The test for empty CFLAGS used the bash (and compatible) -z test to check
for a zero length string.

This changes it to the more shell neutral "x$foo" = "x" form that's also
used elsewhere in this file.

The AS_IF macro is the preferred way of expressing these tests.
Since there are a few of them in this file, such a rewrite would touch
large parts of it. Perhaps something to look into later.