cmake cannot link museekd against libxml++

[Silver]

I'm trying to build Museek+ 0.2 (SVN 1026) on FreeBSD. Concerning museekd, it gets built OK, but then:

... [100%] Building CXX object museekd/CMakeFiles/museekd.dir/distributedsocket.cpp.o Linking CXX executable museekd /usr/bin/ld: cannot find -lxml++-2.6 *** Error code 1

Concerning libxml++, cmake seems to find it OK - before building:

... -- checking for one of the modules 'libxml++-2.6' -- found libxml++-2.6, version 2.22.0

[lbponey]

Have you checked that libxml++ is correctly installed?

[Silver]

Yes, it is: I have /usr/local/lib/libxml++-2.6.so, /usr/local/include/libxml++-2.6 etc. Cmake finds it initially too:

-- checking for one of the modules 'libxml++-2.6' -- found libxml++-2.6, version 2.22.0

[lbponey]

It seems to be again a problem with the files being installed in /usr/local/. Can you try adding this to the cmake command? (you might need to delete cmake cache files)

-DCMAKE_LIBRARY_PATH=/usr/local/lib

And can you also try to replace "-DCMAKE_REQUIRED_INCLUDES=/usr/local/include" by "-DCMAKE_INCLUDE_PATH=/usr/local/include" and see if the iconv problem reappears?

Thanks!

[Silver]

I tried both -DCMAKE_LIBRARY_PATH=/usr/local/lib and -DCMAKE_REQUIRED_LIBRARIES=/usr/local/lib, but neither didn't help in this case.

Changing -DCMAKE_REQUIRED_INCLUDES to -DCMAKE_INCLUDE_PATH made the iconv problem reappear indeed.

[lbponey]

Can you try with:

-DCMAKE_LIBRARY_PATH=/usr/local

and

-DCMAKE_INCLUDE_PATH=/usr/local

(you might need to delete cmake cache files) thanks

[Silver]

-DCMAKE_INCLUDE_PATH=/usr/local causes the iconv problem to reappear and -DCMAKE_LIBRARY_PATH=/usr/local doesn't change anything.

Maybe the problem isn't that libxml++ isn't found (-- found libxml++-2.6, version 2.22.0), but rather that how it's found - shouldn't it be smth like "-llibxml++-2.6"?

[lbponey]

I don't know... -lxml++-2.6 is ok though, this is what is used on linux (returned by "pkg-config --libs libxml++-2.6"). Have you tried symlinking libs from /usr/local/lib in /usr/lib?

The -DCMAKE_INCLUDE_PATH is not a problem. I thought it would be more adapted than -DCMAKE_REQUIRED_LIBRARIES, but if it doesn't work... let's stick with -DCMAKE_INCLUDE_PATH!

[Silver]

Now I did try linking all the libxml++ libraries in /usr/lib, but still nothing :(

But you meant sticking with -DCMAKE_REQUIRED_LIBRARIES, right? As it was the only one that worked concerning iconv.h.

[lbponey]

Yes, stick with -DCMAKE_REQUIRED_LIBRARIES! I'll look into libxml++ problem.

[lbponey]

hum. sorry, I think I said something stupid yesterday... stick with "-DCMAKE_REQUIRED_INCLUDES=/usr/local/include"!

Can you attach your CMakeCache.txt file?

[anonymous]

Hehe, yes, now I noticed the mistake you did. I attached the CMakeCache.txt now.

[lbponey]

thanks! Was it generated with -DCMAKE_REQUIRED_LIBRARIES or -DCMAKE_LIBRARY_PATH? If yes, I'd also like a cmakecache generated without.

[lbponey]

Oh, and can you give me the output of this command:

ls -l /usr/local/lib/libxml*

[Silver]

$ ls -l /usr/local/lib/libxml* -rw-r--r-- 1 root wheel 233086 Oct 6 17:35 /usr/local/lib/libxml++-2.6.a -rwxr-xr-x 1 root wheel 1122 Oct 6 17:35 /usr/local/lib/libxml++-2.6.la lrwxr-xr-x 1 root wheel 17 Oct 6 17:35 /usr/local/lib/libxml++-2.6.so -> libxml++-2.6.so.2 -rwxr-xr-x 1 root wheel 169210 Oct 6 17:35 /usr/local/lib/libxml++-2.6.so.2 -rw-r--r-- 1 root wheel 1434134 Nov 20 10:34 /usr/local/lib/libxml2.a -rwxr-xr-x 1 root wheel 838 Nov 20 10:34 /usr/local/lib/libxml2.la lrwxr-xr-x 1 root wheel 12 Nov 20 10:34 /usr/local/lib/libxml2.so -> libxml2.so.5 -rwxr-xr-x 1 root wheel 1328356 Nov 20 10:34 /usr/local/lib/libxml2.so.5 -rw-r--r-- 1 root wheel 33048 Sep 7 10:11 /usr/local/lib/libxmlparse.a -rwxr-xr-x 1 root wheel 844 Sep 7 10:11 /usr/local/lib/libxmlparse.la lrwxr-xr-x 1 root wheel 16 Sep 7 10:11 /usr/local/lib/libxmlparse.so -> libxmlparse.so.1 -rwxr-xr-x 1 root wheel 38520 Sep 7 10:11 /usr/local/lib/libxmlparse.so.1 -rw-r--r-- 1 root wheel 103404 Sep 7 10:11 /usr/local/lib/libxmltok.a -rwxr-xr-x 1 root wheel 830 Sep 7 10:11 /usr/local/lib/libxmltok.la lrwxr-xr-x 1 root wheel 14 Sep 7 10:11 /usr/local/lib/libxmltok.so -> libxmltok.so.1 -rwxr-xr-x 1 root wheel 102678 Sep 7 10:11 /usr/local/lib/libxmltok.so.1

[Silver]

Hello again.

The problem is resolved now. I just set appropriate values for LDFLAGS and CONFIGURE_ENV while building. Now the basic flags look like this:

LDFLAGS+= -L/usr/local/lib CMAKE_ARGS+= -DCMAKE_REQUIRED_INCLUDES="/usr/local/include" CONFIGURE_ENV+= CPPFLAGS="${CPPFLAGS}" LDFLAGS="${LDFLAGS}"

[lbponey]

Great! Thanks for working on this! I'm going to update the wiki. Just to be sure: you define those 3 flags before calling cmake? is that right? LDFLAGS+= -L/usr/local/lib

then

CMAKE_ARGS+= -DCMAKE_REQUIRED_INCLUDES="/usr/local/include"

then

CONFIGURE_ENV+= CPPFLAGS="${CPPFLAGS}" LDFLAGS="${LDFLAGS}"

and then

cmake [...]

And now that you've built it, does everything works ok on freebsd?

[Silver]

I haven't actually built it yet - the process makes my machine terribly slow, so I'm setting up a separate machine for building, installing and testing it fully.

And actually I use FreeBSD ports' system to build/install it, but now I tried compiling it by hand, and that should do it under FreeBSD:

$ mkdir build && cd build

$ export LDFLAGS=-L/usr/local/lib

$ export CONFIGURE_ENV=LDFLAGS="${LDFLAGS}"

$ cmake ../ -DCMAKE_REQUIRED_INCLUDES="/usr/local/include"

[Silver]

I've now completed initial packaging of Museek 0.2 for FreeBSD. It build and installs just OK and seems to work OK too. I'll give feedback through tickets if I discover any issues through the extensive use.

[lbponey]

Ok, thanks for your work!