On Mon, Aug 23, 2004 at 12:18:18PM -0400, Ken Smith wrote:
> On Mon, Aug 23, 2004 at 04:38:52PM +0000, Alexander Farber wrote:
> > Sorry for my previous chaotic mail. I've constructed a simple
> > test case for my problem and hope that someone will comment:
> >
> > bolinux72:afarber {555} cat Makefile
> >
> > OBJDIR = objdir
> > SRCS = a.cpp \
> > src1/b.cpp
> > OBJS = $(addprefix $(OBJDIR)/, $(notdir $(SRCS:.cpp=.obj)))
>
> Instead of trying to build all the objects into a single directory,
> could you replicate the directory structure of your sources in your
> object directory? For example, your object directory could look like
> this.
>
> objdir/a.obj
> objdir/src1/b.cpp
correction:
objdir/src1/b.obj
>
> You would define OBJS like this.
>
> OBJS = $(addprefix $(OBJDIR)/, $(SRCS:.cpp=.obj))
>
> I assume that the object directory is dynamically created or, at least
> that you don't have the same directory structure there that you have in
> your source directory. You can overcome this as follows. The following
> is a modified version of your test makefile which implements this
> suggestion.
>
> OBJDIR = objdir
> OBJSUBDIRS = $(addprefix $(OBJDIR)/,$(dir $(SRCS)))
> SRCS = a.cpp \
> src1/b.cpp
> OBJS = $(addprefix $(OBJDIR)/,$(SRCS:.cpp=.obj))
>
> all: $(OBJS)
>
> $(OBJDIR) $(OBJSUBDIRS):
> mkdir -p $(@)
>
> $(OBJDIR)/%.obj: %.cpp | $(OBJDIR) $(OBJSUBDIRS)
> g++ -o $@ -c $<
>
> --
> Ken Smith
--
Ken Smith
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