Foundation with autoconf, automake, and libtool
Foundation with autoconf, automake, and libtool
- Subject: Foundation with autoconf, automake, and libtool
- From: Kyle Moffett <email@hidden>
- Date: Fri, 14 Nov 2003 19:46:13 -0500
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I am writing some GPL'd Objective-C software that makes use of the
autotools, and
I was wondering what is the best way to link with the Foundation
libraries, given
that I would like to later port this software to work with the GNUStep
libraries.
Here is what I have done so far:
Relevant Makefile.am:
lib_LTLIBRARIES = libfinch.la
libfinch_la_LDFLAGS = -no-undefined -version-info 0:0:0 -framework
Foundation
libfinch_la_LIBADD = -lobjc
libfinch_la_SOURCES = \
version.m
Relevant configure.ac:
dnl Find a C compiler
AC_PROC_CC
dnl This ugly hackery is here because of the lack of AC_PROG_OBJCC
_AM_DEPENDENCIES([OBJC])
OBJC=$CC
OBJCFLAGS=$CFLAGS
AC_SUBST([OBJC])
AC_SUBST([OBJCFLAGS])
The link fails as follows:
/bin/sh ../libtool --mode=link gcc -g -O2 -o libfinch.la -rpath
/usr/local/lib -no-undefined -version-info 0:0:0 -framework Foundation
version.lo -lobjc
gcc -dynamiclib -o .libs/libfinch.0.0.0.dylib .libs/version.o -lobjc
- -install_name /usr/local/lib/libfinch.0.dylib -compatibility_version 1
- -current_version 1.0
ld: Undefined symbols:
.objc_class_name_NSObject
/usr/bin/libtool: internal link edit command failed
make[3]: *** [libfinch.la] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
It appears that libtool is not passing the "-framework" option to gcc,
so the link
fails due to missing symbols defined in Foundation.framework. I tried
adding
"libfinch_la_CFLAGS = -framework Foundation" to my Makefile.am, but it
didn't
help.
Cheers,
Kyle Moffett
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