autoconf: Help Formatting
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1 15.1 Controlling Help Output
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1 Users consult `configure --help' to learn of configuration decisions
1 specific to your package. By default, `configure' breaks this output
1 into sections for each type of option; within each section, help
1 strings appear in the order `configure.ac' defines them:
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1 Optional Features:
1 ...
1 --enable-bar include bar
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1 Optional Packages:
1 ...
1 --with-foo use foo
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1 -- Macro: AC_PRESERVE_HELP_ORDER
1 Request an alternate `--help' format, in which options of all
1 types appear together, in the order defined. Call this macro
1 before any `AC_ARG_ENABLE' or `AC_ARG_WITH'.
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1 Optional Features and Packages:
1 ...
1 --enable-bar include bar
1 --with-foo use foo
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