What are LEDA and CGAL:

LEDA is a graph library and CGAL is a geometry library. They can be used independently or combined.

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LEDA and CGAL manual pages:

LEDA:

• LEDA-4.4.1: /usr/local/LEDA/LEDA-4.4.1/man_html/MANUAL.html

CGAL:

• CGAL-3.1: /usr/local/CGAL/CGAL-3.1/doc_html/cgal_manual/contents.html

Compiler to use with LEDA and CGAL:

The libraries are compiled using g++ 3.2.2, so you have to use that version of g++ as well. That compiler is the default one on Red Hat 9 machines. % gcc -v gcc version 3.2.2

To use LEDA:

• Here is a Makefile to compile a program simple.c that uses LEDA:

  # -*-makefile-*-
  
  # must use g++ 3.2.2 (LEDA was compiled using that version)
  CC=g++
  LEDAROOT = /usr/local/LEDA/LEDA-4.4.1
  LDFLAGS =  -L$(LEDAROOT)  -L/usr/X11R6/lib \
          -Wl,-R$(LEDAROOT):/usr/X11R6/lib \
          -lGeoW -lD3 -lW -lP -lG -lL -lX11 -lm
  CFLAGS = -LANG:std -I$(LEDAROOT)/incl
  
  simple: simple.o
  	$(CC) $< -o $@ $(LDFLAGS) 
  
  .c.o:
          $(CC) -c $<  $(CFLAGS)
  

To use CGAL (with GMP, GMPXX, LEDA, and Qt enabled):

• Set two environment variables. This is best done in your .tcshrc (or equivalent for bash users):

    setenv CGAL_LIB_DIR /usr/local/CGAL/CGAL-3.1/lib/i686_Linux-2.4.20-31.9_g++-3.2.2
    setenv CGAL_MAKEFILE /usr/local/CGAL/CGAL-3.1/make/makefile_i686_Linux-2.4.20-31.9_g++-3.2.2
  

• Execute your .tcshrc:

  source ~/.tcshrc
  

• Then use a makefile that includes the cgal makefile. Here is a Makefile to compile a program simple.c:

  # -*-makefile-*-
  
  include $(CGAL_MAKEFILE)
  
  simple: simple.o
  	$(CGAL_CXX)  -o $@ $< $(CGAL_WINDOW_LDFLAGS)
  .c.o:
  	$(CGAL_CXX) $(CGAL_CXXFLAGS) -c $<