Add libbutl-odb source subdirectory

This is an additional (to libbutl) utility library which contains the source
code of libodb, libodb-sqlite, and libsqlite3 configured and tuned for our
needs.

1 files changed, 151 insertions, 0 deletions

diff --git a/libbutl-odb/buildfile b/libbutl-odb/buildfile
new file mode 100644
index 0000000..be04ed0
--- /dev/null
+++ b/libbutl-odb/buildfile
@@ -0,0 +1,151 @@
+# file      : libbutl-odb/buildfile
+# license   : MIT; see accompanying LICENSE file
+
+sys_sqlite = $config.libbutl.system_libsqlite3
+
+intf_libs =
+
+if $sys_sqlite
+  import intf_libs += libsqlite3%lib{sqlite3}
+
+lib{butl-odb}: odb/{h hxx ixx txx cxx}{**}
+lib{butl-odb}: sqlite/{h c}{*}: include = (!$sys_sqlite)
+lib{butl-odb}: $intf_libs
+
+# Build options.
+#
+cxx.poptions =+ "-I$src_base"
+
+if! $sys_sqlite
+  cxx.poptions =+ "-I($src_base/sqlite)"
+
+# For now we only need single-threaded ODB and SQLite. Note that if we need to
+# change that, then we will most likely need to deal with MinGW stdthread mess
+# (see libbutl/buildfile for details). Also see SQLITE_THREADSAFE=0 below.
+#
+cxx.poptions += -DODB_THREADS_NONE
+
+obja{*}: cxx.poptions += -DLIBODB_STATIC_BUILD -DLIBODB_SQLITE_STATIC_BUILD
+objs{*}: cxx.poptions += -DLIBODB_SHARED_BUILD -DLIBODB_SQLITE_SHARED_BUILD
+
+if! $sys_sqlite
+{
+  # Note: copy of libsqlite3/buildfile except for SQLITE_THREADSAFE=0,
+  # -DSQLITE_OMIT_SHARED_CACHE, and removed ENABLE_UNLOCK_NOTIFY=1.
+  #
+  # We also add -Wno-unused-variable and -Wno-unused-but-set-variable.
+  #
+  tclass = $c.target.class
+
+  bsd     = ($tclass == 'bsd')
+  windows = ($tclass == 'windows')
+
+  gcc        = ($c.class == 'gcc')
+  clang      = ($c.id.type == 'clang')
+  clang_msvc = ($clang && $c.target.system == 'win32-msvc')
+
+  sqlite/
+  {
+    c.poptions += \
+      -DSQLITE_ALLOW_ROWID_IN_VIEW=1 \
+      -DSQLITE_ENABLE_COLUMN_METADATA=1 \
+      -DSQLITE_ENABLE_DBPAGE_VTAB=1 \
+      -DSQLITE_ENABLE_DBSTAT_VTAB=1 \
+      -DSQLITE_ENABLE_EXPLAIN_COMMENTS=1 \
+      -DSQLITE_ENABLE_FTS3=1 \
+      -DSQLITE_ENABLE_FTS3_PARENTHESIS=1 \
+      -DSQLITE_ENABLE_FTS3_TOKENIZER=1 \
+      -DSQLITE_ENABLE_FTS4=1 \
+      -DSQLITE_ENABLE_FTS5=1 \
+      -DSQLITE_ENABLE_GEOPOLY=1 \
+      -DSQLITE_ENABLE_JSON1=1 \
+      -DSQLITE_ENABLE_LOAD_EXTENSION=1 \
+      -DSQLITE_ENABLE_MATH_FUNCTIONS=1 \
+      -DSQLITE_ENABLE_PREUPDATE_HOOK=1 \
+      -DSQLITE_ENABLE_RTREE=1 \
+      -DSQLITE_ENABLE_SESSION=1 \
+      -DSQLITE_ENABLE_STMTVTAB=1 \
+      -DSQLITE_ENABLE_UPDATE_DELETE_LIMIT=1 \
+      -DSQLITE_LIKE_DOESNT_MATCH_BLOBS=1 \
+      -DSQLITE_MAX_SCHEMA_RETRY=25 \
+      -DSQLITE_MAX_VARIABLE_NUMBER=250000 \
+      -DSQLITE_OMIT_LOOKASIDE=1 \
+      -DSQLITE_SECURE_DELETE=1 \
+      -DSQLITE_SOUNDEX=1 \
+      -DSQLITE_THREADSAFE=0 \
+      -DSQLITE_USE_URI=1 \
+      -DSQLITE_OMIT_SHARED_CACHE=1
+
+    c.poptions += -DSQLITE_MAX_ATTACHED=125
+
+    if! $windows
+      c.poptions += -DHAVE_USLEEP=1
+
+    if $gcc
+      c.coptions += -fno-strict-aliasing
+
+    if $clang_msvc
+      c.coptions += -Wno-deprecated-declarations
+
+    if ($clang && $c.version.major >= 15)
+      c.coptions += -Wno-unused-but-set-variable
+
+    if $gcc
+      c.coptions += -Wno-unused-variable -Wno-extra -Wno-error
+  }
+
+  if! $windows
+  {
+    cxx.libs += -lm
+
+    if! $bsd
+      cxx.libs += -ldl
+  }
+}
+
+# Export options.
+#
+lib{butl-odb}:
+{
+  cxx.export.poptions = "-I$src_base" -DODB_THREADS_NONE
+  cxx.export.libs = $intf_libs
+}
+
+liba{butl-odb}: cxx.export.poptions += -DLIBODB_STATIC -DLIBODB_SQLITE_STATIC
+libs{butl-odb}: cxx.export.poptions += -DLIBODB_SHARED -DLIBODB_SQLITE_SHARED
+
+if! $sys_sqlite
+{
+  lib{butl-odb}: cc.export.poptions = "-I($src_base/sqlite)"
+
+  if $windows
+    libs{butl-odb}: cc.export.poptions += '-DSQLITE_API=__declspec(dllimport)'
+}
+
+# For pre-releases use the complete version to make sure they cannot be used
+# in place of another pre-release or the final version. See the version module
+# for details on the version.* variable values.
+#
+if $version.pre_release
+  lib{butl-odb}: bin.lib.version = @"-$version.project_id"
+else
+  lib{butl-odb}: bin.lib.version = @"-$version.major.$version.minor"
+
+# Install into the libbutl/odb/ subdirectory of, say, /usr/include/. For odb/,
+# recreate subdirectories (so we end up with libbutl/odb/odb/...>). For
+# sqlite/, install directly into libbutl/odb/. Arrange via pkg-config to be
+# able to include ODB headers as <odb/...> and SQLite as just <sqlite3.h>.
+#
+# The reason we add an extra odb/ subdirectory instead of installing directly
+# into libbutl/ is because adding -I for libbutl/ will make all the libbutl
+# headers includable without a prefix and thus prone to clashes.
+#
+odb/{h hxx ixx txx}{*}:
+{
+  install         = include/libbutl/odb/odb/
+  install.subdirs = true
+}
+
+sqlite/h{*}: install = include/libbutl/odb/
+
+lib{butl-odb}: cxx.pkgconfig.include = include/libbutl/odb/