Re: How to make a C++ -module?

[Patrick Welche]

I just made a sandbox with autoconf-2.69, automake-1.15 and git libtool.
Running the tests on NetBSD-current/amd64, gcc 5.4.0, binutils 2.26, I see
several failures, including:

  61: flags.at:24        passing CXX flags through libtool
      libtool cxx

which appears to be the same problem, as shown at the end of this
message.

If I then replace the libtool script in the srcdir of git libtool with

  #! /bin/sh
  exec /usr/pkg/bin/libtool "$@"

and re-run the tests, I get:

 61: passing CXX flags through libtool               ok

This suggests that something among the patches in

  http://cdn.netbsd.org/pub/pkgsrc/current/pkgsrc/devel/libtool/patches/

(probably patch-ab ?) is allowing me to build a loadable module.


Cheers,

Patrick


61. flags.at:24: testing passing CXX flags through libtool ...
./flags.at:24: { test -n "$CXX" && test "X$CXX" != Xno; } || (exit 77)
./flags.at:24: test g++ != "$CXX" || (g++ -v >/dev/null 2>&1) || (exit 77)
enable shared libraries
./flags.at:24: $LIBTOOL --tag=CXX --mode=compile $compile -c $source
stderr:
stdout:
libtool: compile:  g++ -g -O2 -c a.cpp  -fPIC -DPIC -o .libs/a.o
libtool: compile:  g++ -g -O2 -c a.cpp -o a.o >/dev/null 2>&1
./flags.at:24: $LIBTOOL -n --tag=CXX --mode=compile $compile         $flag-foo 
-c $source
stderr:
stdout:
libtool: compile:  g++ -g -foo -O2 -c a.cpp  -fPIC -DPIC -o .libs/a.o
libtool: compile:  g++ -g -foo -O2 -c a.cpp -o a.o >/dev/null 2>&1
./flags.at:24: $FGREP " -foo" stdout
stdout:
libtool: compile:  g++ -g -foo -O2 -c a.cpp  -fPIC -DPIC -o .libs/a.o
libtool: compile:  g++ -g -foo -O2 -c a.cpp -o a.o >/dev/null 2>&1
./flags.at:24: $LIBTOOL -n --tag=CXX --mode=link $link     -o program$EXEEXT 
a.lo $flag-foo
stderr:
stdout:
libtool: link: g++ -g -O2 -o program .libs/a.o -foo  
./flags.at:24: $FGREP " $flag_prefix_prog-foo" stdout
stdout:
libtool: link: g++ -g -O2 -o program .libs/a.o -foo  
./flags.at:24: $LIBTOOL -n --tag=CXX --mode=link $link       -o $output a.lo 
-rpath /nowhere $flag-foo
stderr:
stdout:

*** Warning: linker path does not have real file for library -lgcc.
*** I have the capability to make that library automatically link in when
*** you link to this library.  But I can only do this if you have a
*** shared version of the library, which you do not appear to have
*** because I did check the linker path looking for a file starting
*** with libgcc and none of the candidates passed a file format test
*** using a regex pattern. Last file checked: /usr/lib/libgcc.a
*** The inter-library dependencies that have been dropped here will be
*** automatically added whenever a program is linked with this library
*** or is declared to -dlopen it.