Hi,
I can't figure out how to compile a simple ObjC program on Yellow Dog Linux. My main.m looks like
#import <Foundation/Foundation.h> int main(int argc, const char *argv[]) { NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init]; NSLog(@"all tests passed"); [pool release]; return 0; }
and my GNUmakefile like
include $(GNUSTEP_MAKEFILES)/common.make TOOL_NAME=mtest string_OBJC_FILES = mtest.m
This is the line that is causing you trouble. The name of your tool is "mtest", but you specify the file that would constitute a tool names "string". Replacing this with
mtest_OBJC_FILES = mtest.m
should work
include $(GNUSTEP_MAKEFILES)/tool.make
make produces:
Making all for tool mtest... Linking tool mtest ... /usr/lib/crt1.o(.rodata+0x4): undefined reference to `main' collect2: ld returned 1 exit status make[1]: *** [shared_obj/mtest] Error 1 make: *** [mtest.all.tool.variables] Error 2
What am I doing wrong?
And actually, I would be even more interested in how to build my test program directly with gcc. I'm considering using ObjC/GnuStep-Base for embedded development and would prefer not to use the supplied makefiles.
To see the actual gcc command you have to switch on the verbose mode by doing:
make messages=yes
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