<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8"> <META NAME="GENERATOR" CONTENT="GtkHTML/3.32.2"> </HEAD> <BODY> On Wed, 2011-12-07 at 21:10 -0800, Alan Coopersmith wrote: <BLOCKQUOTE TYPE=CITE> <PRE> On 12/07/11 10:39, Gaetan Nadon wrote: > DATADIR, like any installation variable, is not known at configure time. > This is by design to allow setting the variable at make time. > The AX_DEFINE_DIR macro worked around this design and consequently > cancelled an Automake feature. > > The alternative method suggested by Automake ends up being simpler > while providing the same result as AX_DEFINE_DIR but without cancelling > any feature. It is used in the xserver for the parser and in xquartz. > > The AX_DEFINE_DIR macro has been removed from the Autoconf Archive. > There are no official providers for this macro anymore. Before automake 1.11 doing this would have contributed a lot of noise to the build logs, but silent mode should cover this. </PRE> </BLOCKQUOTE> Many -Ds would be noisy and could overflow command limits in some cases. <BLOCKQUOTE TYPE=CITE> <PRE> For simple cases like this it seems okay - in cases where we were exporting the definition in a .h file a more complex solution may be required. </PRE> </BLOCKQUOTE> There is another Automake proposed alternative: <BLOCKQUOTE> Alternatively, create a dedicated header file: <PRE> DISTCLEANFILES = myprog-paths.h myprog-paths.h: Makefile echo '#define DATADIR "$(datadir)"' >$@ </PRE> </BLOCKQUOTE> <BLOCKQUOTE TYPE=CITE> <PRE> One nit/question, should it be CPPFLAGS instead of CFLAGS? </PRE> </BLOCKQUOTE> See patch v2 Thanks. </BODY> </HTML>