# To subscribers of the xforms list from Angus Leeming <angus.leeming@btopenworld.com> :
On Wednesday 23 April 2003 9:58 pm, Lars Gullik Bjønnes wrote:
> Angus Leeming <angus.leeming@btopenworld.com> writes:
> | In order for things to work properly, I find that I had to change the
> | forms.h target to ../forms.h. Otherwise "make dist" copies across
> | lib/include/forms.h but not lib/forms.h and so make in the lib dir fails.
> | Obviously, I could add appropriate -I targets to the INCLUDE directive or
> | modify all the .c files to look for include/forms.h, but altering the
> | target seems the cleanest solution.
>
> This I do not quite understand.
I'll try and explain (took me some time to figure out what was going on).
The original code had
forms.h: $(noinst_HEADERS)
@rm -f $@
@for i in $(noinst_HEADERS); do \
sed "1,/crop here for forms/d" ${srcdir}/$$i >> $@; \
done
cmp -s $@ ../forms.h; \
if [ $$? -ne 0 ]; then \
cp $@ ../.; \
echo created new forms.h; \
fi
The way BUILT_SOURCES works, it is invoked on "make all". Thus all is fine
when performing a "normal" make. The file is generated and a copy is moved to
../. It is this copy (in the lib dir) that is #included by the .c files.
However, things screw up if we first "make distdir". The code above is
invoked _first_, then the directory is created and stuff copied across.
forms.h is copied across fine, but ../forms.h is not (automake knows nothing
about that file). Hence, when we perform the subsequent build, things fail
when we try and #include "forms.h" because we look only in lib, not
lib/include.
Changing the target from form.h to ../forms.h therefore resolves the problem
cleanly.
Regards,
Angus
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