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master ebf59d1: Check whether the sqlite supports sqlite3_load_extension
From: |
Lars Ingebrigtsen |
Subject: |
master ebf59d1: Check whether the sqlite supports sqlite3_load_extension |
Date: |
Sat, 11 Dec 2021 00:40:08 -0500 (EST) |
branch: master
commit ebf59d1a28b49b391b8025d7017bacf853c01aa2
Author: Lars Ingebrigtsen <larsi@gnus.org>
Commit: Lars Ingebrigtsen <larsi@gnus.org>
Check whether the sqlite supports sqlite3_load_extension
* configure.ac: Check for sqlite3_load_extension, which is
apparently missing in some versions.
* src/sqlite.c: Add guards.
(Fsqlite_load_extension): Ifdef out on systems that doesn't have it.
---
configure.ac | 5 +++++
src/sqlite.c | 17 +++++++++++++----
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/configure.ac b/configure.ac
index 5eb2384..8d15c70 100644
--- a/configure.ac
+++ b/configure.ac
@@ -2695,6 +2695,11 @@ if test "${with_sqlite3}" != "no"; then
if test "${opsys}" = "mingw32"; then
SQLITE3_LIBS=
fi
+ AC_CHECK_LIB(sqlite3, sqlite3_load_extension,
+ HAVE_SQLITE3_LOAD_EXTENSION=yes, HAVE_SQLITE3_LOAD_EXTENSION=no)
+ if test "$HAVE_SQLITE3_LOAD_EXTENSION" = "yes"; then
+ AC_DEFINE(HAVE_SQLITE3_LOAD_EXTENSION, 1, [Define to 1 if sqlite3
supports loading extensions.])
+ fi
fi
fi
diff --git a/src/sqlite.c b/src/sqlite.c
index 5098943..42a7a3a 100644
--- a/src/sqlite.c
+++ b/src/sqlite.c
@@ -65,11 +65,16 @@ DEF_DLL_FN (SQLITE_API const char*, sqlite3_column_name,
(sqlite3_stmt*, int));
DEF_DLL_FN (SQLITE_API int, sqlite3_exec,
(sqlite3*, const char*, int (*callback)(void*,int,char**,char**),
void*, char**));
-DEF_DLL_FN (SQLITE_API int, sqlite3_load_extension,
- (sqlite3*, const char*, const char*, char**));
DEF_DLL_FN (SQLITE_API int, sqlite3_prepare_v2,
(sqlite3*, const char*, int, sqlite3_stmt**, const char**));
+# ifdef HAVE_SQLITE3_LOAD_EXTENSION
+DEF_DLL_FN (SQLITE_API int, sqlite3_load_extension,
+ (sqlite3*, const char*, const char*, char**));
+# undef sqlite3_load_extension
+# define sqlite3_load_extension fn_sqlite3_load_extension
+# endif
+
# undef sqlite3_finalize
# undef sqlite3_close
# undef sqlite3_open_v2
@@ -91,7 +96,6 @@ DEF_DLL_FN (SQLITE_API int, sqlite3_prepare_v2,
# undef sqlite3_column_text
# undef sqlite3_column_name
# undef sqlite3_exec
-# undef sqlite3_load_extension
# undef sqlite3_prepare_v2
# define sqlite3_finalize fn_sqlite3_finalize
@@ -115,7 +119,6 @@ DEF_DLL_FN (SQLITE_API int, sqlite3_prepare_v2,
# define sqlite3_column_text fn_sqlite3_column_text
# define sqlite3_column_name fn_sqlite3_column_name
# define sqlite3_exec fn_sqlite3_exec
-# define sqlite3_load_extension fn_sqlite3_load_extension
# define sqlite3_prepare_v2 fn_sqlite3_prepare_v2
static bool
@@ -142,7 +145,9 @@ load_dll_functions (HMODULE library)
LOAD_DLL_FN (library, sqlite3_column_text);
LOAD_DLL_FN (library, sqlite3_column_name);
LOAD_DLL_FN (library, sqlite3_exec);
+# ifdef HAVE_SQLITE3_LOAD_EXTENSION
LOAD_DLL_FN (library, sqlite3_load_extension);
+# endif
LOAD_DLL_FN (library, sqlite3_prepare_v2);
return true;
}
@@ -576,6 +581,7 @@ DEFUN ("sqlite-rollback", Fsqlite_rollback,
Ssqlite_rollback, 1, 1, 0,
return sqlite_exec (XSQLITE (db)->db, "rollback");
}
+#ifdef HAVE_SQLITE3_LOAD_EXTENSION
DEFUN ("sqlite-load-extension", Fsqlite_load_extension,
Ssqlite_load_extension, 2, 2, 0,
doc: /* Load an SQlite module into DB.
@@ -593,6 +599,7 @@ MODULE should be the file name of an SQlite module .so
file. */)
return Qt;
return Qnil;
}
+#endif /* HAVE_SQLITE3_LOAD_EXTENSION */
DEFUN ("sqlite-next", Fsqlite_next, Ssqlite_next, 1, 1, 0,
doc: /* Return the next result set from SET. */)
@@ -691,7 +698,9 @@ syms_of_sqlite (void)
defsubr (&Ssqlite_transaction);
defsubr (&Ssqlite_commit);
defsubr (&Ssqlite_rollback);
+#ifdef HAVE_SQLITE3_LOAD_EXTENSION
defsubr (&Ssqlite_load_extension);
+#endif
defsubr (&Ssqlite_next);
defsubr (&Ssqlite_columns);
defsubr (&Ssqlite_more_p);
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