Bug 1207310

I could get "qucs" simulation working again by fixing up /bin/freehdl-config:

--- /bin/freehdl-config.ORIG    2015-02-26 19:31:08.000000000 +0200
+++ /bin/freehdl-config 2015-03-31 15:17:39.295286396 +0300
@@ -39,7 +39,7 @@
        echo "-L$libdir" ;;

   --libtool | -libtool | -libs)
-       echo "$libdir/libfreehdl-kernel.la $libdir/libfreehdl-std.la" ;;
+       echo "-lfreehdl-kernel -lfreehdl-std" ;;

   --ieee | -ieee)
        echo "$libdir/freehdl/libieee.la" ;;

i.e. instead of linking with the .la's I tell libtool to link against the provided .so files.

Strangely enough, freehdl package still provides libieee.la, so no change required for the "--ieee" switch.

Stefan, could you try Mageia's patch:

http://svnweb.mageia.org/packages/cauldron/freehdl/current/SOURCES/freehdl-0.0.8-freehdl-config.patch

The patch alone is incomplete and will not work. But this is what *DOES* work:

- remove /usr/lib64/freehdl/libieee.la
- add /etc/ld.so.conf.d/freehdl-x86_64.conf

/usr/lib64/freehdl

- run "ldconfig" to update the linker configuration cache
- apply the patch to freehdl-config:

--- /bin/freehdl-config.ORIG    2015-02-26 19:31:08.000000000 +0200
+++ /bin/freehdl-config 2015-03-31 18:20:31.241242354 +0300
@@ -36,13 +36,13 @@
        echo "$version" ;;

   --ldflags | -ldflags | -l)
-       echo "-L$libdir" ;;
+       echo "-L$libdir/freehdl -L$libdir" ;;

   --libtool | -libtool | -libs)
-       echo "$libdir/libfreehdl-kernel.la $libdir/libfreehdl-std.la" ;;
+       echo "-lfreehdl-kernel -lfreehdl-std" ;;

   --ieee | -ieee)
-       echo "$libdir/freehdl/libieee.la" ;;
+       echo "-lieee" ;;

   --cxxflags | -cxxflags | -c)
        echo "$cxxflags -I$includedir" ;;

Now "qucs" simulations compile & run without any .la files provided by freehdl.

I would still suggest to create freehdl-devel, to follow the usual convention that development files should be provided by a "-devel" package:

 /usr/bin/freehdl-config
 /usr/include/freehdl/...
 /usr/lib64/freehdl/libieee.so
 /usr/lib64/libfreehdl-cdfggen.so
 /usr/lib64/libfreehdl-fire.so
 /usr/lib64/libfreehdl-kernel.so
 /usr/lib64/libfreehdl-std.so
 /usr/lib64/libfreehdl-vaul.so
 /usr/lib64/pkgconfig/freehdl.pc
 /usr/share/man/man1/freehdl-config.1.gz

But this will require packages like qucs to depend on freehdl-devel instead of freehdl.

(In reply to Stefan Becker from comment #3)
> The patch alone is incomplete and will not work. But this is what *DOES*
> work:
> 
> - remove /usr/lib64/freehdl/libieee.la
> - add /etc/ld.so.conf.d/freehdl-x86_64.conf

Thanks, that's what I had expected.

However, this means freehdl is broken. It installs libieee into a bogus location libdir/freehdl is a location appropriate for plugins/dlopened libs, but not for a shared library.

I guess the root cause is the possible name clash from libieee.so.0. All other libraries include the "freehdl-" part.

If you only apply the patch (not the libieee.la removal & ld.so.conf.d addition), then you need to keep libieee.la, because then the resulting binary will end up with RPATH that points to the correct location of libieee.so.0:

 $ readelf --wide --all .qucs/digi | fgrep -e Shared -e rpath
  0x0000000000000001 (NEEDED)             Shared library: [libfreehdl-kernel.so.0]
  0x0000000000000001 (NEEDED)             Shared library: [libfreehdl-std.so.0]
  0x0000000000000001 (NEEDED)             Shared library: [libieee.so.0]
  0x0000000000000001 (NEEDED)             Shared library: [libstdc++.so.6]
  0x0000000000000001 (NEEDED)             Shared library: [libm.so.6]
  0x0000000000000001 (NEEDED)             Shared library: [libgcc_s.so.1]
  0x0000000000000001 (NEEDED)             Shared library: [libc.so.6]
  0x000000000000000f (RPATH)              Library rpath: [/usr/lib64/freehdl]

freehdl-config provides "libtool" as the linker tool, not "ld", otherwise "-lieee" wouldn't lead to the processing of the libieee.la file.

So the simplest solution to the problem is still the patch from comment #1.

Also the script "/bin/gvhdl" needs updating, because it has the libtool information hard-coded inside the script. Maybe this script is auto-generated, so after updating freehdl-config the build process generates a correct script?

The script is also broken for x86_64, because it hard-codes "lib" instead of "lib64" for the "libieee.la" location

--- /bin/gvhdl.ORIG     2015-02-26 19:31:09.000000000 +0200
+++ /bin/gvhdl  2015-04-02 19:13:19.486707319 +0300
@@ -9,7 +9,7 @@
 my $vhdl_source_name = "";
 my $source = "";
 my $includes = "";
-my $cpplibs = "-lm FREEHDL/lib/libfreehdl-kernel.la FREEHDL/lib/libfreehdl-std.la";
+my $cpplibs = "-lm -lfreehdl-kernel -lfreehdl-std";
 my $vhdl_library = ""; # Library the design entity is compiled into
 my $cpp_options = "";
 my $vhdl_options = "";
@@ -148,7 +148,7 @@
     } elsif ($argument =~ /^\--relaxed-component-visibility/) {
       $vhdl_options = $vhdl_options . " --relaxed-component-visibility";
     } elsif ($argument =~ /^\--libieee/) {
-       $cpplibs .= " " . update ("FREEHDL/lib/freehdl/libieee.la");
+       $cpplibs .= " " . update ("FREEHDL/lib64/freehdl/libieee.la");
     } elsif ($argument =~ /^\-/) {
       $cpp_options = $cpp_options . " " . $argument;
     } else {

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