Hello,
Sorry for my english, but what I meant was that with this piece of
text in Makefile.am :
lib_LIBRARIES = libliquidsurfaces.a
libliquidsurfaces_a_SOURCES = LiquidSurfaces.cp LiquidSurfacesPriv.h
#libliquidsurfaces_a_LIBADD = LiquidSurfaces.o
include_HEADERS = LiquidSurfaces.h
The generated Makefile has no object files, and that causes the error :
ar cru libliquidsurfaces.a
ar: no archive members specified
usage: ar -d [-TLsv] archive file ...
with the empty file list on the ar command.
Then I tried using the _LIBADD line. If public symbols aren't required
in the resulting library, what are they anyway ?
On Aug 22, 2008, at 5:10 PM, Ralf Wildenhues wrote:
Hello Daniel,
* Daniel Luis dos Santos wrote on Fri, Aug 22, 2008 at 12:34:23AM
CEST:
I am trying to build a library on a leopard machine with autoconf
2.61 and
automake 10.1 from mac ports. The generated makefile has no object
files and
then the ar command fails with :
ar cru libliquidsurfaces.a
ar: no archive members specified
usage: ar -d [-TLsv] archive file ...
Yep, unfortunately passing no files to 'ar cru $lib' is not portable,
besides the fact that POSIX requires you to pass at least one file.
You can add a dummy object with source containing
static int foo;
lib_LIBRARIES = libliquidsurfaces.a
libliquidsurfaces_a_SOURCES = LiquidSurfaces.cp LiquidSurfacesPriv.h
#libliquidsurfaces_a_LIBADD = LiquidSurfaces.o
include_HEADERS = LiquidSurfaces.h
I have included the .o in the commented _LIBADD but probably that
won't work
because no public symbols are put in the library file.
I don't think anybody minds if there are no public symbols (but my
memory is a bit vague here, might want to search the list archives
on this).
How can I tell in the makefile what are the names of the object
files,
instead of being derived from the Sources ?
Object file names generally are an internal Automake detail, which you
should have no knowledge of. (They might be renamed in the presence
of
per-target compile flags.) Just listing sources in lib*_SOURCES
should
get the objects compiled from those sources into the archive.
Hope that helps.
Cheers,
Ralf
