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8 commits

Author SHA1 Message Date
Paolo Bonzini
4fd56724ad Use Jenkins hash. 
This is about twice as fast as the current hash, and removes the
need for double hashing (improving locality of reference).  The
hash function is based on Bob Jenkins' design, slightly adapted
wherever Make needs to hash NUL-terminated strings.  The old hash
function is kept for case-insensitive hashing.

This saves 8.5% on QEMU's no-op build (from 12.87s to 11.78s).

* configure.ac: Check endianness.
* hash.c (rol32, jhash_mix, jhash_final, JHASH_INITVAL,
sum_get_unaligned_32, jhash): New.
* hash.h (STRING_HASH_1, STRING_N_HASH_1): Use jhash.
(STRING_HASH_2, STRING_N_HASH_2): Return a dummy value.
(STRING_N_COMPARE, return_STRING_N_COMPARE): Prefer memcmp to strncmp.
 2017-11-11 10:08:30 -05:00
Paul Smith
23c2b99e9d Convert all "`'" quotes to "''" per new GNU Coding Standard guidelines. 
Fixes Savannah bug #34530.
 2012-03-04 00:24:20 +00:00
Paul Smith
988deb489b Fix for complex situations where directories are declared as prerequisites. 
Info on this fix from barkalow@reputation.com: thanks!

Some updates/cleanups of some of the tests; added a forgotten -t test, etc.
 2002-09-04 07:26:19 +00:00
Paul Smith
21cf8c6444 Install Greg McGary's patches to port the id-utils hashing functions to 
GNU make.  Also he provides some other performance fixups after doing
some profiling of make on large makefiles.

Modify the test suite to allow the use of Valgrind to find memory problems.
 2002-07-11 06:38:57 +00:00
Paul Smith
a81013175c * Ignore attempt to change a file into itself. 
* Define COFLAGS to avoid unknown variable warning.
* Fix some usec problems on UnixWare.
* Don't remove .INTERMEDIATE targets specified on the command line.
 2000-03-26 06:56:54 +00:00
Paul Smith
90f23f1ea6 * Updates for VMS, Windows, and DOS ports. 
* Clean up some warnings.
 2000-02-05 07:50:47 +00:00
Paul Smith
af44f16799 * Fix problems with double-colon rules. 
* Fix problems with INTERMEDIATE rules.
 1999-12-18 17:43:47 +00:00
Paul Smith
0d366b6682 * Added the test suite to the main distribution. 1999-09-14 02:03:19 +00:00