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Mention dependency problems caused by pgrminclude on include files.

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This commit is contained in:
Bruce Momjian 2006-07-17 19:37:21 +00:00
parent d77f73eb2a
commit 2256d299bb
1 changed files with 15 additions and 5 deletions
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14
src/tools/pginclude/README
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@ -13,7 +13,7 @@ pgrminclude [-v]
pgcheckdefines
check for #ifdef tests on symbols defined in files that
weren't included --- this is a necessary sanity check on
pgrminclude!
pgrminclude
pgdefine create macro calls for all defines in the file (used by
the above routines)
@ -23,8 +23,18 @@ alphabetic order. This is best done with a text editor. Typical usage
order would be:
pgfixinclude
sort include references
run multiple times:
pgcompinclude
pgrminclude /src/include
pgcompinclude
pgrminclude /
pgcheckdefines
There is a complexity when modifying /src/include. If include file 1
includes file 2, and file 2 includes file 3, then when file 1 is
processed, it needs only file 2, not file 3. However, if later, include
file 2 is processed, and file 3 is not needed by file 2 and is removed,
file 1 might then need to include file 3. For this reason, the
pgcompinclude and pgrminclude /src/include steps must be run several
times until all includes compile cleanly.