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<H1><A NAME="SECTION00020000000000000000">
A First Tool</A>
</H1>
Let's try it out by making a little command line tool using
the GNUstep make package. Let's start by creating a directory
to hold our project. In this directory, type the following
extremely simple program in a file called say <TT>source.m</TT>.
<PRE>
#import <Foundation/Foundation.h>
int
main (void)
{
NSLog (@"Executing");
return 0;
}
</PRE>
The function <TT>NSLog</TT> simply outputs the string to
<TT>stderr</TT>, flushing the output before continuing.
To compile this little program as a command line tool
called <TT>LogTest</TT>, add in the same directory a file
called <TT>GNUmakefile</TT>, with the following contents:
<PRE>
include $(GNUSTEP_MAKEFILES)/common.make
TOOL_NAME = LogTest
LogTest_OBJC_FILES = source.m
include $(GNUSTEP_MAKEFILES)/tool.make
</PRE>
And that's it.
At this point, you have all the usual standard GNU make options:
typically make, make clean, make install, make distclean.
For example, typing <TT>make</TT> in the project directory
should compile our little tool.
It should create a single executable <TT>LogTest</TT>, and
put it in the subdirectory
<PRE>
shared_obj/ix86/linux-gnu/gnu-gnu-gnu-xgps
</PRE>
(or in a similar one, according to your system). To install the tool,
simply type <TT>make install</TT>; you usually need to be root to
install the tool on a system directory. If you want to have it
installed in your own user GNUstep directory (eg,
<TT>/home/nicola/GNUstep</TT>), which doesn't require you to be root
and could be a better place for testing, you just need to add the line
<PRE>
GNUSTEP_INSTALLATION_DIR = $(GNUSTEP_USER_ROOT)
</PRE>
after including <TT>common.make</TT>, as follows:
<PRE>
include $(GNUSTEP_MAKEFILES)/common.make
GNUSTEP_INSTALLATION_DIR = $(GNUSTEP_USER_ROOT)
TOOL_NAME = LogTest
LogTest_OBJC_FILES = source.m
include $(GNUSTEP_MAKEFILES)/tool.make
</PRE>
I usually do this when testing my own code and programs, and it is
very handy.
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<ADDRESS>
Nicola Pero
2000-10-12
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