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Diffstat (limited to 'FAQ')
| -rw-r--r-- | FAQ | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/FAQ b/FAQ index 3de7dfec50..5fe4be493c 100644 --- a/FAQ +++ b/FAQ @@ -143,6 +143,8 @@ please let me know. execute any binaries. What went wrong? 3.19. bonnie reports that char i/o with glibc 2 is much slower than with libc5. What can be done? +3.20. Programs compiled with glibc 2.1 can't read db files made with glibc + 2.0. What has changed that programs like rpm break? 4. Miscellaneous @@ -1497,6 +1499,22 @@ suffix `_unlocked', for details check <stdio.h>. Using `putc_unlocked' etc. instead of `putc' should give nearly the same speed with bonnie (bonnie is a benchmark program for measuring disk access). + +3.20. Programs compiled with glibc 2.1 can't read db files made with glibc + 2.0. What has changed that programs like rpm break? + +{AJ} The GNU C library 2.1 uses db2 instead of db1 which was used in version +2.0. The internal formats of the actual db files are different. To convert +the db files from db1 format to db2 format, you can use the programs +`db_dump185' and `db_load'. Alternativly programs can be linked with db1 +using `-ldb1' instead of linking with db2 which uses `-ldb'. Linking with +db1 might be preferable if older programs need to access the db file. + +db2 supports the old db1 programming interface and also a new programming +interface. For compilation with the old API, <db_185.h> has to be included +(and not <db.h>) and you can link with either `-ldb1' or `-ldb' for either +of the db formats. + . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |