David Morris wrote:
I'm new to cmake, and I have been trying to find a good comprehensive
tutorial to get myself started, but have had no luck. Does anyone know
a good one besides the cmake.org <http://cmake.org> site and the
linuxjournal one?
I will try to describe one problem i'm having, but I'm not really sure
where to begin. I'm trying to compile a C++ project and I get this error:
/usr/bin/ld: Undefined symbols:
_glBegin
_glBindTexture
_glColor3d
_glColor3f
_glCullFace
...
...
and so on...
I read somewhere this might have to do with cmake trying to compile
C++ code using gcc instead of g++, and that you can override this
setting in the CMakeCache file, but this is the line in the
CMakeCache.txt file:
CMAKE_CXX_COMPILER:FILEPATH=/usr/bin/c++
I tried changing it to g++, but it didn't seem to do anything. I don't
think this has much to do with the actual code of the project, so I
didn't bother explaining anything about it here. Any help would be
greatly appreciated. I'm thinking it's a really simple error, but who
knows. Here is the text of my main CMakeLists.txt file:
---
#Change PROJECT_NAME to the name of your project
PROJECT(TopMod)
#include some macros from another file...
INCLUDE(${TopMod_SOURCE_DIR}/CMakeMacros.txt)
#Declare any external dependencies that your project may have here.
#examples include: ITK, VTK, JPEG, PNG, OpenGL, ZLIB, Perl, Java
#If you're not sure what name to use, look in the Modules directory of
your
#cmake install and check that a file named Find(Package).cmake exists
SET(Required_Packages
FLTK JPEG PNG OpenGL ZLIB GLUT
)
FOREACH(Package ${Required_Packages})
LOADPACKAGE(${Package})
ENDFOREACH(Package)
#run through these sub directories to build these two libraries
SUBDIRS(vecmat)
SUBDIRS(arcball)
INCLUDE_DIRECTORIES(${TopMod_SOURCE_DIR}/arcball
${TopMod_SOURCE_DIR}/vecmat ${TopMod_SOURCE_DIR}/include /opt/local/lib)
LINK_DIRECTORIES(${TopMod_BINARY_DIR}/arcball
${TopMod_BINARY_DIR}/vecmat ${TopMod_BINARY_DIR}/include /opt/local/lib)
SET(Libraries fltk_images fltk_gl fltk arcball vecmat)
SET(CurrentExe "TopMod")
FILE(GLOB SRC *.cc)
ADD_EXECUTABLE(${CurrentExe} ${SRC})
TARGET_LINK_LIBRARIES(${CurrentExe} ${Libraries})
You need to link in the opengl library.
-Bill
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