This shows how to have multiple sub-projects driven from a single sconstruct.
It assumes a directory structure:
...\Sconstruct ; main sconstruct file
...\herprogram\sconscript ; sconscript for sub-project
\src files ; the source files for the sub-project
...\hisprogram\sconscript
\src files
...\myprogram\sconscript
\src files
...\debug\herprogram ; the debug build directory for sub-project
...\debug\hisprogram
...\debug\myprogram
...\release\herprogram ; the release build directory for sub-project
...\release\hisprogram
...\release\myprogramThe command line looks like this:
scons myprogram ; build project 'myprogram' in release mode scons hisprogram ; build project 'hisprogram' in release mode scons herprogram ; build project 'herprogram' in release mode scons mode=debug herprogram ; build project 'herprogram' in debug mode scons mode=release herprogram ; build project 'herprogram' in release mode
SConstruct:
1 #get the mode flag from the command line
2 #default to 'release' if the user didn't specify
3 mymode = ARGUMENTS.get('mode', 'release') #holds current mode
4
5 #check if the user has been naughty: only 'debug' or 'release' allowed
6 if not (mymode in ['debug', 'release']):
7 print "Error: expected 'debug' or 'release', found: " + mymode
8 Exit(1)
9
10 #tell the user what we're doing
11 print '**** Compiling in ' + mymode + ' mode...'
12
13 debugcflags = ['-W1', '-GX', '-EHsc', '-D_DEBUG', '/MDd'] #extra compile flags for debug
14 releasecflags = ['-O2', '-EHsc', '-DNDEBUG', '/MD'] #extra compile flags for release
15
16 env = Environment()
17
18 #make sure the sconscripts can get to the variables
19 Export('env', 'mymode', 'debugcflags', 'releasecflags')
20
21 #put all .sconsign files in one place
22 env.SConsignFile()
23
24 #specify the sconscript for myprogram
25 project = 'myprogram'
26 SConscript(project + '/sconscript', exports=['project'])
27
28 #specify the sconscript for hisprogram
29 project = 'hisprogram'
30 SConscript(project + '/sconscript', exports=['project'])
31
32 #specify the sconscript for herprogram
33 project = 'herprogram'
34 SConscript(project + '/sconscript', exports=['project'])
SConscript:
1 import glob
2
3 #get all the build variables we need
4 Import('env', 'project', 'mymode', 'debugcflags', 'releasecflags')
5 localenv = env.Copy()
6
7 buildroot = '../' + mymode #holds the root of the build directory tree
8 builddir = buildroot + '/' + project #holds the build directory for this project
9 targetpath = builddir + '/' + project #holds the path to the executable in the build directory
10
11 #append the user's additional compile flags
12 #assume debugcflags and releasecflags are defined
13 if mymode == 'debug':
14 localenv.Append(CCFLAGS=debugcflags)
15 else:
16 localenv.Append(CCFLAGS=releasecflags)
17
18 #specify the build directory
19 localenv.BuildDir(builddir, ".", duplicate=0)
20
21 srclst = map(lambda x: builddir + '/' + x, glob.glob('*.cpp'))
22 localenv.Program(targetpath, source=srclst)