View source for Real World Mozilla Makefile Lab

[[Real World Mozilla]] > [[Real World Mozilla Day 2]] > Makefile Lab

== Overview ==

This lab is designed to give you first-hand experience creating a simple Makefile and using Make to build software.  While the Mozilla build system is much more complex than this example, the ideas learned here will get you started understanding how Mozilla is built.

For nostalgic reasons we will work with the source code to Evan Weaver's nled editor, written in C.

== Instructions ==

The lab machines have already been set-up to use MSVC 8 and MozillaBuild RC1.  You only need to run '''Mozilla-Build MSVC 8.bat''' (there is a link on the desktop) to begin (i.e., you shouldn't need to install anything).

# Download and extract the nled [http://cs.senecac.on.ca/~david.humphrey/nled-2.52-src.zip source code]
# Start Mozilla-Build MSVC8.bat to get a proper build environment
# Move to the directory where you extracted the source
# Using a text editor, create a file in this directory named '''Makefile'''
# Examine all the .c files to determine dependencies with the .h files
# Write targets and rules for each of the object files and the final executable
# Write a '''clean''' target in order to delete all .obj and .exe files
# You will know you are done when the following commands result in nled.exe being produced:

 $ make
 $ make clean


or, if you want to combine this into one line:

 $ make && make clean

== Hints ==
* [http://msdn2.microsoft.com/en-us/library/8we9bhf4(VS.80).aspx CL -c option]
* [http://msdn2.microsoft.com/en-us/library/yb8e9b8y(VS.80).aspx CL -Fo option]
* The default extension for object files on win32 is '''.obj''' vs. .o on Unix
* To create the executable (nled.exe) you must link all .obj files ''and'' '''user32.lib'''
* Running make with the '''-n''' option will show you all the commands make is going to run, which is helpful when debugging makefiles:

 $ make -n

== Resources ==
* [http://benjamin.smedbergs.us/blog/2007-01-12/mozillabuild-rc1/ MozillaBuild RC1 for Win32]
* [http://www.gnu.org/software/make/manual/ GNU Make Manual] 
* [http://www.eng.hawaii.edu/Tutor/Make/ Make Tutorial]
* [[Makefile.in Template for In-Tree Extensions]]