compile a gnulib based project to MinGW
I am trying to cross-compile this project to MinGW.
The project uses autotools as the build system, and depends on libcurl, CUnit, Jansson and some gnulib modules.
I have all the dependancies compiled for x86_64-w64-mingw32 and installed under /home/user/mingw64
I run:
$ gnulib-tool --update
$ autoreconf -fi
$ CURL_CFLAGS="-I/home/user/mingw64/usr/local/include"
CURL_LIBS="-L/home/user/mingw64/usr/local/lib -lcurl"
JANSSON_CFLAGS="-I/home/user/mingw64/usr/local/include"
JANSSON_LIBS="-L/home/user/mingw64/usr/local/lib -ljansson"
CUNIT_CFLAGS="-I/home/user/mingw64/usr/local/include"
CUNIT_LIBS="-L/home/user/mingw64/usr/local/lib -lcunit"
./configure --host=x86_64-w64-mingw32
$ make
And I get this error:
make all-recursive
make[1]: Entering directory '/home/user/projects/shill'
Making all in po
make[2]: Entering directory '/home/user/projects/shill/po'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/user/projects/shill/po'
Making all in lib
make[2]: Entering directory '/home/user/projects/shill/lib'
make[2]: *** No rule to make target 'lib/errno.h', needed by 'all'. Stop.
make[2]: Leaving directory '/home/user/projects/shill/lib'
Makefile:1897: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/home/user/projects/shill'
Makefile:1429: recipe for target 'all' failed
make: *** [all] Error 2
errno.h is part of the gnulib modules. So I think that the problem comes from this section in the Makefile.am:
# Find gnulib headers.
ACLOCAL_AMFLAGS = -I m4
AM_CPPFLAGS =
-DLOCALEDIR='"$(localedir)"'
-Ilib -I$(top_srcdir)/lib
-Isrc -I$(top_srcdir)/src
But I can't figure out the solution. I followed exactly the instructions described in the gnulib manual.
I managed to find a workaround for this issue. Apparently autotools aren't as easy as I thought they are.
I had to regenerate gnulib modules, this time specifying the --makefile-name parameter. ie.
$ gnulib-tool ... --makefile-name=gnulib.mk ...
I removed lib/Makefile from automake generated files in configure.ac . So instead of:
dnl Put automake generated files results here
AC_CONFIG_FILES([Makefile
po/Makefile.in
lib/Makefile])
Now I have:
dnl Put automake generated files results here
AC_CONFIG_FILES([Makefile
po/Makefile.in])
I removed lib form SUBDIRS in Makefile.am . ie. Instead of:
# Subdirectories to descend into.
SUBDIRS = po lib
I have:
# Subdirectories to descend into.
SUBDIRS = po
I created a new file in lib directory called local.mk with this content:
include lib/gnulib.mk
# Allow "make distdir" to succeed before "make all" has run.
dist-hook: $(noinst_LIBRARIES)
.PHONY: dist-hook
And included it in Makefile.am .
include $(top_srcdir)/lib/local.mk
Finally I had to run this command:
$ ./build-aux/prefix-gnulib-mk --lib-name=libshill lib/gnulib.mk
That was it.
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