How is SCons Constructing the Command Lines It Executes? the --debug=presub Option

SCons User Guide 0.98.0
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# 25.4. How is SCons Constructing the Command Lines It Executes? the `--debug=presub` Option

Sometimes it's useful to look at the pre-substitution string that SCons uses to generate the command lines it executes. This can be done with the `--debug=presub` option:

          % scons -Q --debug=presub
          Building prog.o with action:
            $CC -o $TARGET -c $CFLAGS $CCFLAGS $_CCOMCOM $SOURCES
          cc -o prog.o -c -I. prog.c
          Building prog with action:
            $SMART_LINKCOM
          cc -o prog prog.o

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