Finish 3rd example
This commit is contained in:
Bassem Girgis
124
execEx/01/SConstruct
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124
execEx/01/SConstruct
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Help("""
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This is the first scons example. In this example we see a very simple way
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of calling scons to create an executable
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>> ls
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main.cpp SConstruct
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>> scons -h (get this help message)
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>> scons -H (get scons command help)
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usage: scons [OPTION] [TARGET] ...
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SCons Options:
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-b, -d, -e, -m, -S, -t, -w, --environment-overrides, --no-keep-going,
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--no-print-directory, --print-directory, --stop, --touch
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Ignored for compatibility.
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-c, --clean, --remove Remove specified targets and dependencies.
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-C DIR, --directory=DIR Change to DIR before doing anything.
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--cache-debug=FILE Print CacheDir debug info to FILE.
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--cache-disable, --no-cache
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Do not retrieve built targets from CacheDir.
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--cache-force, --cache-populate
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Copy already-built targets into the CacheDir.
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--cache-readonly Do not update CacheDir with built targets.
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--cache-show Print build actions for files from CacheDir.
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--config=MODE Controls Configure subsystem: auto, force,
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cache.
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-D Search up directory tree for SConstruct,
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build all Default() targets.
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--debug=TYPE Print various types of debugging information:
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count, duplicate, explain, findlibs, includes,
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memoizer, memory, objects, pdb, prepare,
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presub, stacktrace, time.
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--diskcheck=TYPE Enable specific on-disk checks.
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--duplicate=DUPLICATE Set the preferred duplication methods. Must be
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one of hard-soft-copy, soft-hard-copy,
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hard-copy, soft-copy, copy
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-f FILE, --file=FILE, --makefile=FILE, --sconstruct=FILE
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Read FILE as the top-level SConstruct file.
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-h, --help Print defined help message, or this one.
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-H, --help-options Print this message and exit.
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-i, --ignore-errors Ignore errors from build actions.
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-I DIR, --include-dir=DIR Search DIR for imported Python modules.
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--implicit-cache Cache implicit dependencies
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--implicit-deps-changed Ignore cached implicit dependencies.
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--implicit-deps-unchanged Ignore changes in implicit dependencies.
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--interact, --interactive Run in interactive mode.
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-j N, --jobs=N Allow N jobs at once.
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-k, --keep-going Keep going when a target can't be made.
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--max-drift=N Set maximum system clock drift to N seconds.
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--md5-chunksize=N Set chunk-size for MD5 signature computation to
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N kilobytes.
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-n, --no-exec, --just-print, --dry-run, --recon
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Don't build; just print commands.
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--no-site-dir Don't search or use the usual site_scons dir.
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--profile=FILE Profile SCons and put results in FILE.
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-q, --question Don't build; exit status says if up to date.
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-Q Suppress "Reading/Building" progress messages.
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--random Build dependencies in random order.
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-s, --silent, --quiet Don't print commands.
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--site-dir=DIR Use DIR instead of the usual site_scons dir.
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--stack-size=N Set the stack size of the threads used to run
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jobs to N kilobytes.
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--taskmastertrace=FILE Trace Node evaluation to FILE.
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--tree=OPTIONS Print a dependency tree in various formats: all,
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derived, prune, status.
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-u, --up, --search-up Search up directory tree for SConstruct,
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build targets at or below current directory.
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-U Search up directory tree for SConstruct,
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build Default() targets from local SConscript.
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-v, --version Print the SCons version number and exit.
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--warn=WARNING-SPEC, --warning=WARNING-SPEC
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Enable or disable warnings.
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-Y REPOSITORY, --repository=REPOSITORY, --srcdir=REPOSITORY
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Search REPOSITORY for source and target files.
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>> scons
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scons: Reading SConscript files ...
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scons: done reading SConscript files.
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scons: Building targets ...
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g++ -o main.o -c main.cpp
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g++ -o helloworld main.o
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scons: done building targets.
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>> scons
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scons: Reading SConscript files ...
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scons: done reading SConscript files.
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scons: Building targets ...
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scons: `.' is up to date.
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scons: done building targets.
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>> ls -a
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total 32
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drwxr-xr-x 2 brgirgis users 96 Sep 26 22:50 ./
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drwxr-xr-x 5 brgirgis users 36 Sep 26 22:44 ../
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-rwxr-xr-x 1 brgirgis users 13176 Sep 26 22:50 helloworld*
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-rw-r--r-- 1 brgirgis users 94 Sep 26 22:20 main.cpp
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-rw-r--r-- 1 brgirgis users 2728 Sep 26 22:50 main.o
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-rw-r--r-- 1 brgirgis users 1749 Sep 26 22:50 .sconsign.dblite
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-rw-r--r-- 1 brgirgis users 400 Sep 26 22:50 SConstruct
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>> scons -c
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scons: Reading SConscript files ...
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scons: done reading SConscript files.
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scons: Cleaning targets ...
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Removed main.o
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Removed helloworld
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scons: done cleaning targets.
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>> ls -a
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total 12
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drwxr-xr-x 2 brgirgis users 64 Sep 26 22:53 ./
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drwxr-xr-x 5 brgirgis users 36 Sep 26 22:44 ../
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-rw-r--r-- 1 brgirgis users 94 Sep 26 22:20 main.cpp
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-rw-r--r-- 1 brgirgis users 1759 Sep 26 22:51 .sconsign.dblite
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-rw-r--r-- 1 brgirgis users 1178 Sep 26 22:54 SConstruct
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""")
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Program('helloworld', 'main.cpp')
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