Building fails with "library -lnsl-lintl: not found"

Building of wget2 fails on Solaris 10 x86 with the error

gmake[2]: Entering directory '/home/dam/work/wget2/libwget'
/bin/bash ../libtool  --tag=CC   --mode=link gcc     -DBUILDING_LIBWGET -I/opt/csw/include   -I/opt/csw/include   -I/opt/csw/include   -I/opt/csw/include   -I/opt/csw/include   -I/opt/csw/include -I/opt/csw/include   -I/opt/csw/include   -I/opt/csw/include -I/opt/csw/include/p11-kit-1   -DNDEBUG  -no-undefined -version-info 0:0:0  -o libwget.la -rpath /usr/local/lib libwget_la-atom_url.lo libwget_la-bar.lo libwget_la-bitmap.lo libwget_la-buffer.lo libwget_la-buffer_printf.lo libwget_la-base64.lo libwget_la-console.lo libwget_la-cookie.lo libwget_la-cookie_parse.lo libwget_la-css.lo libwget_la-css_url.lo libwget_la-decompressor.lo libwget_la-dns_cache.lo libwget_la-encoding.lo libwget_la-hash_printf.lo libwget_la-hashfile.lo libwget_la-hashmap.lo libwget_la-io.lo libwget_la-hsts.lo libwget_la-hpkp.lo libwget_la-hpkp_db.lo libwget_la-html_url.lo libwget_la-http.lo libwget_la-http_parse.lo libwget_la-init.lo libwget_la-ip.lo libwget_la-iri.lo libwget_la-list.lo libwget_la-log.lo libwget_la-logger.lo libwget_la-mem.lo libwget_la-metalink.lo libwget_la-net.lo libwget_la-netrc.lo libwget_la-ocsp.lo libwget_la-pipe.lo libwget_la-plugin.lo libwget_la-printf.lo libwget_la-random.lo libwget_la-robots.lo libwget_la-rss_url.lo libwget_la-sitemap_url.lo libwget_la-stringmap.lo libwget_la-strlcpy.lo libwget_la-strscpy.lo libwget_la-thread.lo libwget_la-tls_session.lo libwget_la-utils.lo libwget_la-vector.lo libwget_la-xalloc.lo libwget_la-xml.lo libwget_la-http_highlevel.lo libwget_la-error.lo libwget_la-dns.lo libwget_la-ssl_gnutls.lo     libcsstokenizer.la -lsocket -lnsl -lnsl -lnsl -lnsl -lsocket -lrt   -lrt -lsocket   -lsocket -liconv -lintl -lpthread  -lsocket -L/opt/csw/lib -lpcre   -L/opt/csw/lib -lidn2   -L/opt/csw/lib -lbrotlidec   -L/opt/csw/lib -llzma   -L/opt/csw/lib -lz   -L/opt/csw/lib -lgpgme -lassuan -lsocket -lgpg-error -lbz2 -L/opt/csw/lib -lnghttp2   -L/opt/csw/lib -lpsl   -L/opt/csw/lib -lgnutls    -llz  ../lib/libgnu.la  -L/opt/csw/lib -lpcre   -L/opt/csw/lib -lidn2   -L/opt/csw/lib -lbrotlidec   -L/opt/csw/lib -llzma   -L/opt/csw/lib -lz   -L/opt/csw/lib -lgpgme -lassuan -lsocket -lgpg-error -lbz2 -L/opt/csw/lib -lnghttp2   -L/opt/csw/lib -lpsl   -L/opt/csw/lib -lgnutls    -llz 
libtool: link: gcc -shared  -fPIC -DPIC -Wl,-z -Wl,text -Wl,-h -Wl,libwget.so.0 -o .libs/libwget.so.0.0.0  .libs/libwget_la-atom_url.o .libs/libwget_la-bar.o .libs/libwget_la-bitmap.o .libs/libwget_la-buffer.o .libs/libwget_la-buffer_printf.o .libs/libwget_la-base64.o .libs/libwget_la-console.o .libs/libwget_la-cookie.o .libs/libwget_la-cookie_parse.o .libs/libwget_la-css.o .libs/libwget_la-css_url.o .libs/libwget_la-decompressor.o .libs/libwget_la-dns_cache.o .libs/libwget_la-encoding.o .libs/libwget_la-hash_printf.o .libs/libwget_la-hashfile.o .libs/libwget_la-hashmap.o .libs/libwget_la-io.o .libs/libwget_la-hsts.o .libs/libwget_la-hpkp.o .libs/libwget_la-hpkp_db.o .libs/libwget_la-html_url.o .libs/libwget_la-http.o .libs/libwget_la-http_parse.o .libs/libwget_la-init.o .libs/libwget_la-ip.o .libs/libwget_la-iri.o .libs/libwget_la-list.o .libs/libwget_la-log.o .libs/libwget_la-logger.o .libs/libwget_la-mem.o .libs/libwget_la-metalink.o .libs/libwget_la-net.o .libs/libwget_la-netrc.o .libs/libwget_la-ocsp.o .libs/libwget_la-pipe.o .libs/libwget_la-plugin.o .libs/libwget_la-printf.o .libs/libwget_la-random.o .libs/libwget_la-robots.o .libs/libwget_la-rss_url.o .libs/libwget_la-sitemap_url.o .libs/libwget_la-stringmap.o .libs/libwget_la-strlcpy.o .libs/libwget_la-strscpy.o .libs/libwget_la-thread.o .libs/libwget_la-tls_session.o .libs/libwget_la-utils.o .libs/libwget_la-vector.o .libs/libwget_la-xalloc.o .libs/libwget_la-xml.o .libs/libwget_la-http_highlevel.o .libs/libwget_la-error.o .libs/libwget_la-dns.o .libs/libwget_la-ssl_gnutls.o  -Wl,-z -Wl,allextract ./.libs/libcsstokenizer.a ../lib/.libs/libgnu.a -Wl,-z -Wl,defaultextract  -L/opt/csw/lib -lnsl-lintl -lnsl -lrt -liconv -lintl -lpthread -lpcre -lidn2 -lbrotlidec -llzma -lz -lgpgme -lassuan -lsocket -lgpg-error -lbz2 -lnghttp2 -lpsl -lgnutls -llz   
ld: fatal: library -lnsl-lintl: not found
ld: fatal: file processing errors. No output written to .libs/libwget.so.0.0.0
collect2: error: ld returned 1 exit status

It turns out the erranous snipped -lnsl-lintl is included from lib/libgnu.la:

dependency_libs=' -lnsl-lintl -lnsl -lrt -liconv -lintl -lpthread -L/opt/csw/lib -lpcre -lidn2 -lbrotlidec -llzma -lz -lgpgme -lassuan -lsocket -lgpg-error -lbz2 -lnghttp2 -lpsl -lgnutls -llz'

So this issue looks like a gnulib issue.

In lib/gnulib.mk there is a suspicious addition to libgnu_la_LDFLAGS without space:

libgnu_la_LDFLAGS += $(GETADDRINFO_LIB)$(LTLIBINTL)
...
libgnu_la_LDFLAGS += $(LTLIBICONV)
libgnu_la_LDFLAGS += $(LTLIBINTL)
libgnu_la_LDFLAGS += $(LTLIBMULTITHREAD)

The file lib/gnulib.mk is generated during bootstrap.

What is actually executed during bootstrap is

gnulib/gnulib-tool.py --no-changelog --aux-dir=build-aux --doc-base=doc --lib=libgnu --m4-base=m4/ --source-base=lib/ --tests-base=lib/tests --local-dir=gl --makefile-name=gnulib.mk --libtool --import accept access arpa_inet atoll bind c-strcase c-strcasestr c-ctype calloc-posix canonicalize-lgpl clock-time close closedir cond connect crypto/md2 crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dirname dup dup2 errno fclose fcntl fdopen fflush flock fnmatch-gnu fopen freopen fstat fsync ftruncate futimens getaddrinfo getpass getsockname gettext-h gettime gitlog-to-changelog glob iconv inet_pton inline inttypes ioctl isatty lib-symbol-visibility limits-h link listen lock maintainer-makefile malloc-posix memchr mkdir mkstemp msvc-nothrow nanosleep netdb netinet_in nl_langinfo open opendir pclose pipe-posix progname popen poll posix_spawn pwrite qsort_r random_r read readdir realloc-posix recv recvfrom regex rename safe-read safe-write select send sendto servent setlocale setsockopt socket sockets socklen spawn-pipe stdarg stdbool stddef stdint stat strcase strchrnul strdup-posix strerror strndup strpbrk strstr strtoll sys_file sys_socket sys_stat sys_time sys_types sys_uio thread time_r unistd unlink update-copyright warnings wcwidth write xgethostname

and this command reproduces the error in lib/gnulib.mk

This fixes the error, but I am not sure if this is correct in all cases:

diff --git a/pygnulib/GLModuleSystem.py b/pygnulib/GLModuleSystem.py
index f2f9df4..8283cab 100644
--- a/pygnulib/GLModuleSystem.py
+++ b/pygnulib/GLModuleSystem.py
@@ -808,7 +808,7 @@ Include:|Link:|License:|Maintainer:)'
                         break
                     parts += [line]
                 parts = [part.strip() for part in parts if part.strip()]
-                result = ''.join(parts)
+                result = ' '.join(parts)
             self.cache['link'] = result
         return(self.cache['link'])

I can create a pull request if this fix is approved.