Subject: Re: libtool, C++ shared libraries, and pthreads
To: None <>
From: Johnny C. Lam <>
List: tech-pkg
Date: 11/11/2004 16:05:12
This is a multi-part message in MIME format.
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Johnny C. Lam wrote:
> I've attached the essential part of the changes to libtool that I wish 
> to make to fix the libtool.m4 that differ from the current changes in 
> manual-libtool.m4.  This correctly links -lpthread to the shared library 
> when I build comms/gsmlib.

And the patch:

Content-Type: text/plain;
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;

@@ -3206,10 +3216,17 @@ case $host_os in
-  netbsd*)
+  netbsd0*|netbsd1*)
     if echo __ELF__ | $CC -E - | grep __ELF__ >/dev/null; then
       _LT_AC_TAGVAR(archive_cmds, $1)='$LD -Bshareable  -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
+      # Determine if we need to override the c++rt0 that is
+      # picked up by analysing output_verbose_link_cmds
+      if test -f ${PREFIX}/lib/c++rt0/c++rt0.o.PIC; then
+        cpprt0_file="${PREFIX}/lib/c++rt0/c++rt0.o.PIC"
+      else
+        cpprt0_file=
+      fi
       _LT_AC_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
       _LT_AC_TAGVAR(hardcode_direct, $1)=yes
       _LT_AC_TAGVAR(hardcode_shlibpath_var, $1)=no
@@ -3217,6 +3234,11 @@ case $host_os in
     # Workaround some broken pre-1.5 toolchains
     output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | grep conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
+  netbsd*)
+    _LT_AC_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
+    _LT_AC_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
+    output_verbose_link_cmd='echo'
+    ;;
     # C++ shared libraries are fairly broken
     _LT_AC_TAGVAR(ld_shlibs, $1)=no