I'm having troubles with out of tree (vpath) builds, using
nobase_include_HEADERS, and *.in files processed by configure.
I have a collection of components in a component library.
src/
src/lib1/
Makefile.am
header1.hh
types.hh.in
source1.cc
src/lib2/
Makefile.am
header2.hh
source2.cc
I want to do out of tree (vpath) builds, and maintain the directory
structure of the components for the headers on install.
First, in order to preserve the directory structure for the headers on
install, I added rules such as these to the Makefile.am's
from lib1/Makefile.am
nobase_include_HEADERS = \
$(header_file_list)
lib1/header1.hh : lib1
for file in $(header_file_list) ; do \
nobase_file="`echo $$file | sed -e 's?lib1/??'`" ; \
$(LN_S) -f @HOST_ACDIR@/src/lib1/$$nobase_file lib1/. ; \
done
lib1 :
mkdir lib1;
where $(header_file_list) has the directory name in the file name and
@HOST_ACDIR@ points to the location of configure.
This of course makes a directory lib1 in my current lib1 build dir and
makes soft links to the header files in the source tree. Then on a make
install it puts the headers in the place I want, ie, $prefix/include/lib1.
I have such a snippet for all of my components.
One additional aspect of this is that my source tree has a types.hh.in
which is processed by configure and placed in the build directory. I have
an additional rule that links the processed file into my lib1 subdirectory
for install.
Now, the problem is that in lib2 headers/sources I want to have includes
such as
#include <lib1/header1.hh>
#include <lib1/types.hh>
And of course I want my -I include path to point to the build location of
these headers since some of them have been processed by configure, ie,
types.hh.in -> types.hh
The trouble is that as part of my effort to get the nobase_include_HEADERS
feature for installing headers in subdirectories, is that those headers now
live in lib1/lib1 due to the targets in my Makefile.am and the code won't
compile with -I$(top_builddir)/lib1.
This all seems very complicated and it most definitely seems like this
combination of vpath/nobase_include_HEADERS/types.hh.in is a pretty usual
combination that I shouldn't have to stand on my head for to make it work.
Any suggestions on how better to do this? I hope my explanation of the
directory and file layout above is sufficient to convey what I'm trying to
do.
Thanks much.
jgw
