Can't build because of problems with liblua

[Wieland Hoffmann]

Here's what I did:
» bzr branch lp:s25rttr
» cd s25rttr
» cd build
» ./cmake.sh
(output attached)
» LC_ALL=en_US.utf8 make
[... lots of output ...]
[ 94%] Building CXX object src/CMakeFiles/s25client.dir/nofCharburner.cpp.o
make[2]: *** No rule to make target `/usr/lib/liblua5.2.a', needed by `src/s25client'. Stop.
make[1]: *** [src/CMakeFiles/s25client.dir/all] Error 2
make: *** [all] Error 2

(full log attached if I can convince launchpad into letting me add a second attachment)

I'm using the lua package from Arch Linux, the file list is available at https://www.archlinux.org/packages/extra/x86_64/lua/

I tried this on revision 8764

[Ash Hughes (ashes-iontach)]

Is this because it wants lua 5.2? Would 5.1 do?

[Ash Hughes (ashes-iontach)]

You can download the correct lua libraries from http://luabinaries.sourceforge.net/download.html . Extracting these to the contrib/lua/lin64 and/or contrib/lua/lin32 as appropriate allows compilation to complete.

The static libraries should probably be available in the repo?

[Wieland Hoffmann (themineo)]

But that's just a workaround for the problem - cmake decided to use a lua library which doesn't exist in the filesystem which is just wrong and it should instead yell at me that it can't find a proper lua and ever abort the process or go on without lua support.

[afri donschoe (afri-alex)]

You might need add a "findLua" script to the CMakeLists like that:

include(${CMAKE_SOURCE_DIR}/FindLua.cmake)
find_package(Lua REQUIRED)

see:

http://code.google.com/p/cebmtpchat/source/browse/trunk/CMakeModules/FindLua.cmake?r=502

[afri donschoe (afri-alex)]

I solved it.

In ./CMakeLists.txt lines 472-476:

IF ( NOT EXISTS "${LUA_LIB}" )
 SET(LUA_LIB "/usr/lib/liblua5.2.a")
 ADD_FLAGS(CMAKE_C_FLAGS -I/usr/include/lua5.2)
 ADD_FLAGS(CMAKE_CXX_FLAGS -I/usr/include/lua5.2)
ENDIF ( NOT EXISTS "${LUA_LIB}" )

Add right after this block, another one:

IF ( NOT EXISTS "${LUA_LIB}" )
 SET(LUA_LIB "/usr/lib/liblua.so")
 ADD_FLAGS(CMAKE_C_FLAGS -I/usr/include/)
 ADD_FLAGS(CMAKE_CXX_FLAGS -I/usr/include/)
ENDIF ( NOT EXISTS "${LUA_LIB}" )

Cheers

[FloSoft (flosoft)]

wie can't use FindLua.cmake since it only searches for lua 5.1 not 5.2 which we need.
But I added the "quickfix" now to use the dynamic lua lib if the static one does not exist.