Re: Autoreconf stops with "non-POSIX variable name"

[Peter Johansson]

On 3/30/13 7:17 AM, oborchert wrote:
> Hi,
> I created a Makefile.in where I read the content out of a file and pass it
> to CFLAGS. Calling ./configure ... the Makefile will be generated an all
> works well.
>
> Makefile.in:
> ...
> MY_REVISION_FILE=my-revision.txt
> MY_REVISION=$(shell cat $(top_srcdir)/$(MY_REVISION_FILE))
> AM_CFLAGS = -I$(EXTRAS_INCLUDE_DIR) -I$(top_srcdir)
> -DMY_REVISION=$(MY_REVISION)
> ...
Rather than carry this information via cmdline, I store create a header 
file that I can include when needed. In that way dependencies become 
correct too. I have the following rule in my Makefile.am:

BUILT_SOURCES += $(builddir)/svn_revision.h
$(builddir)/svn_revision.h: $(srcdir)/svn_revision.h.in $(srcdir)/.revision
    $(AM_V_at)revision=$$(cat $(srcdir)/.revision) \
&& sed "s|@SVN_REVISION@|$$revision|g" < $(srcdir)/svn_revision.h.in \
> address@hidden && mv address@hidden $@

and then my svn_revision.h.in looks like

#ifndef SVN_REVISION
#define SVN_REVISION "@SVN_REVISION@"
#endif


Cheers,
Peter


--
Peter Johansson