2 URL: http://sqlite.org/
4 Included In Release: Yes
8 Instructions for importing a new release of SQLite from sqlite.org.
10 Note: our current base version is 3.7.6.3.
12 First, you need to be on Linux.
14 # Determine the versions of the release you want and the release we currently
15 # have. (See the VERSION file to determine which release we currently have.)
16 # You may wish to consult http://www.sqlite.org/changes.html to find out what
17 # changes have been made in each release.
18 # Note - this is just an example. Always refer to the version above for our
19 # real current version.
20 # Set some variables to remember the versions, e.g.:
24 # Get to the src/third_party directory in your Chromium client:
27 # Download the .tar.gz files for the releases:
28 # (If the URL changes you might need to find the new one.)
29 # TODO(shess): Rewrite this to track the new naming format. Meanwhile,
30 # manually navigate to www.sqlite.org and find downloads, use "legacy" version.
31 wget http://www.sqlite.org/sqlite-$BASE.tar.gz
32 wget http://www.sqlite.org/sqlite-$LATEST.tar.gz
34 # Extract the vanilla current and desired versions:
35 tar xzf sqlite-$BASE.tar.gz
36 tar xzf sqlite-$LATEST.tar.gz
38 # Use kdiff3 to merge the changes:
39 kdiff3 -m sqlite-$BASE sqlite-$LATEST sqlite
41 # Resolve any conflicts. Figure out if we've got everything we should
42 # have (see below), or if we can omit any changes we no longer need.
44 # Change to the sqlite directory:
47 # Run the google_generate_amalgamation.sh script:
48 ./google_generate_amalgamation.sh
50 # Find a sucker. Send review.
51 # TODO(shess) Describe an appropriate comment style. Seems like it
52 # should at least include the SQLite version number.
54 --------------------------------------------
56 For reference, all of our local patches are also kept as .patch files in the
57 sqlite directory. Here is a list of the patches, in the order they should be
58 applied to a vanilla SQLite (of the version we currently have) to get, in
59 principle, exactly what is checked in:
72 mac_time_machine.patch
74 sqlite-3.7.6.3-fix-out-of-scope-memory-reference.patch
77 separate_cache_pool.patch
80 So, e.g. you could do this to apply all our patches to vanilla SQLite:
83 patch -p0 < ../sqlite/misc.patch
84 patch -p0 < ../sqlite/preload-cache.patch
85 patch -p0 < ../sqlite/fts2.patch
86 patch -p0 < ../sqlite/fts3.patch
87 patch -p0 < ../sqlite/fts3_85522.patch
88 patch -p0 < ../sqlite/icu-shell.patch
89 patch -p0 < ../sqlite/webdb.patch
90 patch -p0 < ../sqlite/test.patch
91 patch -p0 < ../sqlite/mac_time_machine.patch
92 patch -p0 < ../sqlite/system-sqlite.patch
93 patch -p0 < ../sqlite/sqlite-3.7.6.3-fix-out-of-scope-memory-reference.patch
94 patch -p0 < ../sqlite/misalignment.patch
95 patch -p0 < ../sqlite/memcmp.patch
96 patch -p0 < ../sqlite/separate_cache_pool.patch
97 patch -p0 < ../sqlite/recover.patch
99 This will only be the case if all changes we make also update the corresponding
100 patch files. Therefore please remember to do that whenever you make a change!
102 Descriptions of the changes we've made can be found at the bottom of this file.
104 --------------------------------------------
106 How to run the SQLite tests for the Chromium version of SQLite on Linux.
108 Prerequisties: On my corp Ubuntu 8.04 workstation, I needed to install the
110 sudo apt-get install tcl8.4-dev libicu-dev
112 cd src/third_party/sqlite/src
115 make -f ../Makefile.linux-gcc testfixture
116 make -f ../Makefile.linux-gcc test > /tmp/test.log
117 egrep -v 'Ok$' /tmp/test.log
118 # For an ideal test run, you would see:
119 # 0 errors out of 57887 tests
120 # However, the current situation on my corp Linux Ubuntu 8.04 machine, with
121 # test run on a locally mounted directory, is the failure of:
122 # "rollback-2.3", "tkt3457-1.4"
123 # I do not know why, but it is not related to our fts2.c changes -- I backed
126 Chris Evans <cevans@google.com>, Oct 1, 2009
128 --------------------------------------------
130 As of May 07, 2010, these are our changes from sqlite_vendor:
132 - A fix for a crash passing an integer expression to ATTACH / DETACH. See
134 - A fix for a crash mis-calling the REGEXP() function of the ICU extension.
136 - A large number of fts2 robustness fixes against corrupt data in its metadata
138 - fts2.c disables fts2_tokenizer().
139 - fts3.c disables fts3_tokenizer().
140 - Tweak to SQLITE_EXTENSION_INIT* in sqlite3ext.h.
141 - That implied a change in src/test_autoext.c for testing.
142 - Added fts.test in tests, modified quick.test.
143 - Modifications to Makefile.linux-gcc and main.mk for compiling
145 - Compile warning (cast to void* for sqlite3_free) fixed in func.c.
146 - Avoid using tolower() in fts code which causes problem in some locales, see:
148 http://crbug.com/15261
149 http://www.sqlite.org/src/tktview/991789d9f3136a0460dc83a33e815c1aa9757c26
150 - Check that the third argument to memset() is nonzero in expr.c to avoid
151 a linker warning when the compiler can optimize it to a constant zero
152 (e.g. see http://www.sqlite.org/cvstrac/tktview?tn=3765,39)
155 - I marked all changes I made with "evanm", so you can find them with
157 - Most files include sqlite3ext.h with SQLITE_CORE #defined, but two don't:
158 fts2_tokenizer.c and icu.c. Without this #define, the calls in
159 fts2_tokenizer.c try to go through some pointer to the sqlite API instead
160 of calling the functions directly (to work as a loadable module), but then
161 crash (because the other files never initialize that loadable module
162 support). As a hack I #defined it in these files, but it'd be nice to
163 figure out what really ought to happen here (perhaps this file is new and
164 hasn't been tested to verify it works right). Update: Seems this is an
165 issue we get because we're using fts2 instead of fts3.
166 - shell_icu_win.c and shell_icu_linux.c are Chrome-specific files used to load
167 our ICU data. shell.c has been modifed to call into these files.
168 - fts2_icu.c and fts3_icu.c have a critical bug. U8_NEXT is used over
169 a UTF-16 string. It's rep$ by U16_NEXT (jungshik)
170 - Added a new function sqlite3_preload we use to prime the database cache. It
171 allows much faster performance by reading the file in one contiguous
172 operation rather than bringing it in organically, which involves a lot of
173 seeking. This change also required sqlite3PcacheGetCachesize to be compiled
174 even outside SQLITE_TEST.
175 - Added a new function chromium_sqlite3_initialize_win_sqlite3_file()
176 at the end of os_win.c. It allows the Windows-specific Chromium VFS
177 to reuse most of the win32 SQLite VFS.
178 - Added a new function
179 chromium_sqlite3_initialize_unix_sqlite3_file() and made
180 fillInUnixFile() non-static in os_unix.c. It allows the
181 Linux-specific Chromium VFS to reuse most of the unix SQLite VFS.
182 - Exposed three functions that deal with unused file descriptors in
183 os_unix.c, to allow Chromium's Posix VFS implementation in
184 WebKit/WebCore/platform/sql/chromium/SQLiteFileSystemChromiumPosix.cpp
185 to correctly implement the "unused file descriptors" logic in the
186 xDlOpen() method. The new functions are
187 chromium_sqlite3_get_reusable_file_handle(),
188 chromium_sqlite3_update_reusable_file_handle() and
189 chromium_sqlite3_destroy_reusable_file_handle(). Also, added the
190 chromium_sqlite3_fill_in_unix_sqlite3_file() function that calls
191 fillInUnixFile(), which will be made static again as soon as a
192 WebKit patch using the new function lands.
193 - From mac_time_machine.patch:
194 When __APPLE__ and when creating a -journal file with any unix-type vfs,
195 determine if the database for which the journal is being created has been
196 excluded from being backed up using Apple's Time Machine and if so then also
197 exclude the journal. These changes were made in pager.c with includes of
198 Apple interfaces being made in sqliteInt.h. In order to eliminate a symbol
199 conflict with an Apple library after amalgamation it was also necessary to
200 rename fts3_porter.c's 'cType' to 'vOrCType'.
201 - fts3_85522.patch allows fts3 to work if PRAGMA is not authorized.
202 - src/recover.c file implements a virtual table which can read
204 - Enable the macro 'SQLITE_TEMP_STORE=3' for Android.
205 - memcmp.patch backports ASAN-related fixes from SQLite trunk.