I just added the stat module to my project, which pulls in alloca. Now I
get this error during bootstrap:
bootstrap: running: autoreconf --symlink --install
libgnu/Makefile.gnulib:58: error: required file 'lib/alloca.c' not found
I have source_base set to libgnu (not lib). I am also using subdir-objects
in AM_INIT_AUTOMAKE, which might be relevant.
In my case, the offending line of Makefile.gnulib is:
libgnu_la_LIBADD = $(gl_libgnu_LTLIBOBJS)
This list of objects appears to come eventually from
EXTRA_libgnu_la_SOURCES. In my case, this is set by the following lines in
libgnu/Makefile.gnulib:
60: EXTRA_libgnu_la_SOURCES =
86: EXTRA_libgnu_la_SOURCES += alloca.c
536: EXTRA_libgnu_la_SOURCES += relocatable.c
663: EXTRA_libgnu_la_SOURCES += stat-w32.c
I was already using the relocatable module, so I already had an entry in
this variable, so I don't see what new mechanism is engaged here.
If I copy alloca.c into my lib/ directory, the error is fixed as promised.
So it seems I have failed to configure something, or there is a bug in
gnulib and it's ignoring my source_base.
I have looked for occurrences of alloca.c and I notice the following in
m4/gnulib-comp.m4:
# Like AC_LIBSOURCES, except the directory where the source file is
# expected is derived from the gnulib-tool parameterization,
# and alloca is special cased (for the alloca-opt module).
# We could also entirely rely on EXTRA_lib..._SOURCES.
AC_DEFUN([gltests_LIBSOURCES], [
m4_foreach([_gl_NAME], [$1], [
m4_if(_gl_NAME, [alloca.c], [], [
m4_define([gltests_LIBSOURCES_DIR], [tests])
m4_append([gltests_LIBSOURCES_LIST], _gl_NAME, [ ])
])
])
])
But this seems only to be relevant to tests.
I read in the manual about alloca-opt, but I can't see that I'm required to
do anything special because of it; and in any case, I'm not using it
directly.
I would be most grateful for any pointers as to how I might work out what's
going wrong here.
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