On 12/15/2016 10:53 AM, Wouter Verhelst wrote: > On Wed, Dec 14, 2016 at 04:19:53PM -0600, Eric Blake wrote: >> Automake recommends the use of $(CFLAGS), not @CFLAGS@, because >> that allows a user to override CFLAGS at make time (with >> 'make CFLAGS=-g', for example) rather than being hard-coded to >> the CFLAGS in use during configure time. Use the preferred >> substitution style for ALL variables, not just CFLAGS. > > Actually, we want to use AM_CFLAGS, which works with older versions of > automake, too, IIRC. Given that, I don't think there's much point in > converting > all the @FOO_CFLAGS@ etc to $() syntax.
Whether it is $(CFLAGS) or $(AM_CFLAGS) is less important, the point remains that automake (including older versions all the way back to the automake present on RHEL 5) documents that $(name) is preferred over @name@ substitutions in Makefile.am. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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