configure: Don't set user variables 70/3870/3
authorAndreas Fritiofson <andreas.fritiofson@gmail.com>
Sun, 6 Nov 2016 14:49:35 +0000 (15:49 +0100)
committerPaul Fertser <fercerpav@gmail.com>
Thu, 8 Dec 2016 15:15:27 +0000 (15:15 +0000)
commitef4c139ce224e4d3784bcff411604c1908b13da6
tree7460d0f8459ced3b4d3aa24c4ec5db078b7e4483
parent1789445c8283521951543d5a130fbf10b3594705
configure: Don't set user variables

CFLAGS is a user variable and shouldn't be set in either
configure.ac or Makefile.am because that makes it impossible to
override compiler flags at configure or make time.

AC_SUBST the default warning flags into AM_CFLAGS instead, which
is emitted before CFLAGS on the compiler command line.

Do the same thing with a mingw-specific flag as well.

Change-Id: I6ac3a3c8b7e0abf6f0e60ea239b549d68ea6d370
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/3870
Tested-by: jenkins
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
common.mk
configure.ac

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