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Rupal,
Once you've compiled C or C++ source files in to object
files, the
linker can't really tell the difference between them -
they're both
object files. The only differences will (probably) be the
export
signatures - that is, C++ symbols will be exported in the
usual C++
mangled form, while C symbols will be unmangled. But if you
export
public symbols using "extern C", then there'll be
even less differences
between the two.
BTW, I assume you're creating a SHARED library, and not a
STATIC
library. To create a static library, you use the ar utility
to just
combine object files into a static archive. To create a
shared library,
you'd use the linker (ld) to link your object files together
into a
shared object.
To build a shared object, just pass the "-shared"
flag to the $(CXX)
tool (usually gcc). Also pass any additional libraries
needed to resolve
symbols, and use the "-o" option to specify the
output library name.
John
rupal.desai wrote:
> I need to make c or c++ source files into object files
and then include both for a library.
>
> Below is the way srcs and objects get defined. How do
get foo.o and bar.o to combine to get the lib.
>
> export SRCS = foo.cpp
> bar.c
>
> .SUFFIXES: .cpp .c
>
> ifeq ($(firstword $(suffix $(SRCS))),.cpp)
> OBJS := $(addprefix $(OBJDIR)/, $(SRCS:.cpp=.o))
> else
> OBJS := $(addprefix $(OBJDIR)/, $(SRCS:.c=.o))
> endif
>
> $(OBJDIR)/%.o: %.cpp
> $(CXX) $(COPTS) $(OSDEFINES) $(EXTRA_DEFINES)
$(INCLUDES) -o $ -c $<
>
> $(OBJDIR)/%.o: %.c
> $(CC) $(COPTS) $(OSDEFINES) $(EXTRA_DEFINES)
$(INCLUDES) -o $ -c $<
>
> $(SHARED_LIB): $(OBJS)
> $(CXX) $(SHLDFLAGS) $(OBJS) $(LDFLAGS) $(LIBS)
$(SYSLIBS) -o $(OBJDIR)/$
> $(CP) $(OBJDIR)/$ $(PRJLIB)
>
> Rupal Desai
>
>
>
>
>
>
> ---------------------------------
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>
>
>
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