CGAL users discussion list

[陳 柏宏 <>]

Hi, How do I write CMakeLists for CGAL 3.4?

I am trying to convert this Makefile (under 3.1)

__________________________________________

include $(CGAL_MAKEFILE)

CXXFLAGS = $(CGAL_CXXFLAGS) -g -ansi -w

SOLVER_LIBS=  -lgsl -lgslcblas

all: example gen_data kinetic

clean:

rm -f *.o *.moc example gen_data *~ core*

example: example.o poly.o zroots.o

$(CXX) $(CXXFLAGS) $(CGAL_LDFLAGS) -o example $^ $(SOLVER_LIBS)

gen_data: gen_data.o poly.o zroots.o

$(CXX) $(CXXFLAGS) $(CGAL_LDFLAGS) -o gen_data $^ $(SOLVER_LIBS)

window.moc: window.h

$(QT_MOC) -o window.moc window.h

interface.moc: interface.h

$(QT_MOC) -o interface.moc interface.h

window.o: window.moc

interface.o: interface.moc

kinetic: main.o window.o interface.o poly.o zroots.o kdt.o

$(CXX) $(CXXFLAGS) $(CGAL_LDFLAGS) -o kinetic $^ $(SOLVER_LIBS) -lCGALQt -lqt -lgmp -lmpfr -lm

__________________________________________

to a CMakeLists for CGAL 3.4

I tried:

____________________________________________

# This is the CMake script for compiling a CGAL application.

project( kinetic ) 

CMAKE_MINIMUM_REQUIRED(VERSION 2.4.5)

set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)

set(SOLVER_LIBS   -lgsl -lgslcblas)

if ( COMMAND cmake_policy )

  cmake_policy( SET CMP0003 NEW )  

endif()

find_package(CGAL COMPONENTS Qt3 )

include( ${CGAL_USE_FILE} )

find_package(Qt3-patched)

# FindQt3-patched.cmake is FindQt3.cmake patched by CGAL developers, so

# that it can be used together with FindQt4: all its variables are prefixed

# by "QT3_" instead of "QT_".

if ( CGAL_FOUND AND QT3_FOUND AND CGAL_Qt3_FOUND)

  # use the Qt MOC preprocessor on classes that derives from QObject

  include( Qt3Macros-patched )

  qt3_generate_moc( "${CMAKE_CURRENT_SOURCE_DIR}/window.h" window.moc )

  qt3_generate_moc( "${CMAKE_CURRENT_SOURCE_DIR}/interface.h" interface.moc )

  # The executable itself.

  add_executable  ( example

                    example.cpp

   poly.cpp

   zroots.cpp)

  add_executable  ( gen_data

                    gen_data.cpp

   poly.cpp

   zroots.cpp)

  add_executable  ( kinetic

                    window.cpp window.moc

   interface.cpp interface.moc

   poly.cpp

   zroots.cpp

   kdt.cpp)

  add_to_cached_list( CGAL_EXECUTABLE_TARGETS example )

  add_to_cached_list( CGAL_EXECUTABLE_TARGETS gen_data )

  add_to_cached_list( CGAL_EXECUTABLE_TARGETS kinetic )

  target_link_libraries( example ${CGAL_LIBRARIES} ${SOLVER_LIBS} ${CGAL_3RD_PARTY_LIBRARIES})

  target_link_libraries( gen_data ${CGAL_LIBRARIES} ${SOLVER_LIBS} ${CGAL_3RD_PARTY_LIBRARIES})

  target_link_libraries( kinetic ${CGAL_LIBRARIES} ${SOLVER_LIBS} ${CGAL_3RD_PARTY_LIBRARIES})

else()

  message(STATUS "NOTICE: This demo requires CGAL and Qt3, and will not be compiled.")

endif()

______________________________________

But when compiling I get a linking error 

Linking CXX executable kinetic

/usr/bin/cmake -P CMakeFiles/kinetic.dir/cmake_clean_target.cmake

/usr/bin/c++    -frounding-math -O3 -DNDEBUG  -fPIC "CMakeFiles/kinetic.dir/window.o" "CMakeFiles/kinetic.dir/interface.o" "CMakeFiles/kinetic.dir/poly.o" "CMakeFiles/kinetic.dir/zroots.o" "CMakeFiles/kinetic.dir/kdt.o"   -o kinetic -rdynamic -L/afs/ir.stanford.edu/class/cs268/support/CGAL-3.4/lib -L/usr/class/cs268/support/CGAL-3.4/lib -L/usr/class/cs268/support/qt/lib -lCGAL_Qt3 -lCGAL -lboost_thread-gcc41-mt-1_34_1 -Wl,-Bstatic -lqassistantclient -Wl,-Bdynamic -lqt -lSM -lICE -lX11 -lXext -ldl -lGLU -lGL -lSM -lICE -lX11 -lXext -lCGAL_Qt3 -lCGAL -lgsl -lgslcblas -lboost_thread-gcc41-mt-1_34_1 -Wl,-Bstatic -lqassistantclient -Wl,-Bdynamic -lqt -lSM -lICE -lX11 -lXext -ldl -lGLU -lGL -lSM -lICE -lX11 -lXext -Wl,-rpath,/afs/ir.stanford.edu/class/cs268/support/CGAL-3.4/lib:/usr/class/cs268/support/CGAL-3.4/lib:/usr/class/cs268/support/qt/lib 

/usr/lib/gcc/x86_64-linux-gnu/4.1.3/../../../../lib/crt1.o: In function `_start':

(.text+0x20): undefined reference to `main'

collect2: ld returned 1 exit status

What is wrong here?

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