Make problem with MSVSC++

[W. Bauer]

Dear all

The following makefile

CXX= cl
CXXFLAGS = -c -O2
%.o : %.cc
$(CXX) $(CXXFLAGS) $*.cc
lib: cflow_irr.o
gives, when called with "make lib", the error

NMAKE : fatal error U1073: don't know how to make 'cflow_irr.o'
Using instead the explicit dependency
cflow_irr.o:
$(CXX) $(CXXFLAGS) cflow_irr.cc
it works. This is my first makefile problem, so I would appreciate any
hints. The problem is the more then 100 files need to get compiled.

W. Bauer

 

[John Harrison]

Dear all

The following makefile

CXX= cl
CXXFLAGS = -c -O2
%.o : %.cc
$(CXX) $(CXXFLAGS) $*.cc
lib: cflow_irr.o
gives, when called with "make lib", the error

NMAKE : fatal error U1073: don't know how to make 'cflow_irr.o'
Using instead the explicit dependency
cflow_irr.o:
$(CXX) $(CXXFLAGS) cflow_irr.cc
it works. This is my first makefile problem, so I would appreciate any
hints. The problem is the more then 100 files need to get compiled.

W. Bauer

I think that the syntax for NMAKE is completely different from the syntax
you are used to. But in any case for help with NMAKE ask on a Windows
programming group such as or
maybe You are off topic here.

But they'll probably tell you to forget about makefiles and create a project
instead.

john

 

[W. Bauer]

(e-mail address removed) (John Harrison) wrote in

You are off topic here.
Sorry!

But they'll probably tell you to forget about makefiles and create a
project instead.

I hope not.

W. Bauer

 

[Marc]

%.o : %.cc
$(CXX) $(CXXFLAGS) $*.cc

This is a GNUism. The regular unix way to do this is :
..cc.o:
$(CXX) $(CXXFLAGS) $<

you may also need to add a line: ".SUFFIXES: .cc .o", I do not remember
what the default list is supposed to be.

I do not know about nmake in particular, but you are more likely to have
the standard syntax work than an extension.

 

[Mike Wahler]

(e-mail address removed) (John Harrison) wrote in


I hope not.

If so, you can find information about NMAKE at
www.msdn.microsoft.com

-Mike

 

[W. Bauer]

.cc.o:
$(CXX) $(CXXFLAGS) $<

you may also need to add a line: ".SUFFIXES: .cc .o", I do not remember

Many thanks, that works. Actually, both
$(CXX) $(CXXFLAGS) $*.cc
and
$(CXX) $(CXXFLAGS) $<
work with nmake of MSVC++

Many thanks for the help, W. Bauer