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- <sect2>
- <title>Command explanations</title>
- <para><userinput>CPPFLAGS=-Dre_max_failures=re_max_failures2:</userinput> The
- CPPFLAGS variable is a variable that's read by the cpp program (C
- PreProcessor). The value of this variable tells the preprocessor to
- replace every instance of re_max_failures it finds by re_max_failures2
- before handing the source file to the compiler itself for compilation. This
- package has problems linking statically on systems that run an older
- Glibc version and this construction fixes that problem.</para>
- <para><userinput>PR_PROGRAM=/usr/bin/pr:</userinput> When 'diff' is called
- with the '-l' flag, it tries to find 'pr' at the location specified with the
- PR_PROGRAM variable. By default, this variable points to '/bin/pr', but since
- we install 'pr' in /usr/bin, we need to change this.</para>
- </sect2>
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