Shan wrote:

Hi,

I'm trying to use boost in a cygwin enviroment. I've installed the boost-1_33_1 libraries using the cygwin setup program. I have a makefile to compile a simple program but I keep getting the error.

$ make g++ -c -O3 cash_flow.cpp

Note the command line, the boost include path isn't there, so you need to adjust your makefile. I'm also a little surprised not to see a message that couldn't be found. Just tripple checking, but you did include that file in cash_flow.cpp didn't you :-) You don't need to link to any external libs to use shared_ptr either. HTH, John.

In file included from cash_flow.cpp:6: cash_flow.h:12: error: `boost' has not been declared cash_flow.h:12: error: ISO C++ forbids declaration of `shared_ptr' with no type cash_flow.h:12: error: expected `;' before '<' token make: *** [cash_flow.o] Error 1

I'm new to Unix like environments and am not able to setup the makefile properly. Below is what I have

TARGET = main CPP = g++ CPPFLAGS = -O3 INCLUDES = -I/usr/include/boost-1_33_1 LDFLAGS = LIBS = -lboost_1_33_1 SOURCES = $(wildcard *.cpp) DEPENDS = $(SOURCES:%.cpp=%.d) OBJECTS = $(DEPENDS:%.d=%.o) TMPS = $(wildcard *.hpp~) $(wildcard *.cpp~)

$(TARGET) : $(OBJECTS) $(CPP) -o $@ $(LDFLAGS) $(OBJECTS) $(LIBS)

clean : rm -rf $(TARGET) $(DEPENDS) $(OBJECTS) $(TMPS)

$(DEPENDS) : %.d : %.cpp set -e; $(CPP) -MM $(CPPFLAGS) $< \ | sed 's/\($*\)\.o[ :]*/\1.o $@ : /g' > $@; \ [ -s $@ ] || rm -f $@

$(OBJECTS) : %.o : %.cpp $(CPP) -c $(CPPFLAGS) $<

.PHONY : clean

include $(DEPENDS)

I also tried using the includes/library names

I tried that as well

INCLUDES = -I/usr/include/boost-1_33_1 LDFLAGS = -L/usr/lib LIBS = -lboost_1_33_1

and

$(OBJECTS) : %.o : %.cpp $(CPP) -c $(CPPFLAGS) $(INCLUDES) $<

Still get the same error ..

Can someone tell me which libboost*.a should I point to as there are many .. for eg to use boost::shared_ptr?

Thanks S.

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