Linking the library to C++ codes

Some scripts are generated automatically at compilation time. If the shell environment is set properly, these scripts are accessible from a shell terminal.

• get_cpp gives the compiler options used to build the library
• get_inc gives all the include directive options required for C++ compilation with the GET library
• get_lib gives the options required to link a program with the GET library and all other needed libraries

The scripts get_base_inc and get_base_lib show only the options related to the GET library, and not the other libraries.

The following is an example of a simplified makefile:

# Compilation options
CPP            := g++
CPPFLAGS       := ${shell get_cpp}
INCFLAGS       := ${shell get_inc}
LDFLAGS        := ${shell get_lib}

# Library source file
MY_SRC := #$(shell ls *.cpp)
MY_OBJ := #$(LIB_SRC:%.cpp=%.o)
MY_INC := #$(shell ls *.hh)

# Program executable
EXE            := my_program

#===============================================================
# Dependencies

all:           ${EXE}
               @echo ""
               @echo "Programs:"
               @echo "    "${EXE}
               @echo ""

# Object files
%.o:           %.cpp ${MY_INC}
               @echo ""
               @echo "--> Compiling object $*"
               ${CPP} $< ${CPPFLAGS} ${INCFLAGS} -c -o $@
               @echo ""

# Program
${EXE}:        ${MY_OBJ}
               @echo ""
               @echo "--> Linking program $*"
               ${CPP} $< ${CPPFLAGS} ${INCFLAGS} ${LDFLAGS} -o $*
               @echo ""