Date: Sat, 21 Jan 2012 21:09:49 -0600 From: Stephen Montgomery-Smith <stephen@missouri.edu> To: FreeBSD Ports <freebsd-ports@FreeBSD.org> Cc: Stephen Montgomery-Smith <stephen@FreeBSD.org> Subject: Re: LDFLAGS mystery Message-ID: <4F1B7DFD.6080005@missouri.edu> In-Reply-To: <4F1B27ED.9070005@missouri.edu> References: <4F1B27ED.9070005@missouri.edu>
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On 01/21/2012 03:02 PM, Stephen Montgomery-Smith wrote:
> If I build a port that uses "USE_FORTRAN", then the variable ${LDFLAGS}
> has an extra space in it. For example
>
> %cd /usr/ports/math/lapack
> %make -V LDFLAGS
> -Wl,-rpath=/usr/local/lib/gcc46
>
> %make -V MAKE_ENV
> .... LDFLAGS=" -Wl,-rpath=/usr/local/lib/gcc46" ...
>
> I am trying to create a port in which this creates problems.
>
> Where does the extra space at the beginning come from, and how do I get
> rid of it?
I solved the mystery. Inside /usr/share/mk/sys.mk is the line:
LDFLAGS ?=
I think that it is a bug in "make" that
XXX=
XXX+=xxx
results in XXX having the value " xxx".
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