From 50dbc17490c848f61e274bea7e445ab4c6c7bb58 Mon Sep 17 00:00:00 2001
From: Dubiousjim <dubiousjim@gmail.com>
Date: Mon, 7 Dec 2020 17:58:50 -0500
Subject: [PATCH] LIBSQLITE3_FLAGS for bundled -> SQLITE_FLAGS

This flag was added in a9b700c but never documented. Here we change the
name to more closely follow SQLITE_MAX_VARIABLE_NUMBER etc; and
document its existence in README.md.
---
 README.md               | 2 +-
 libsqlite3-sys/build.rs | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/README.md b/README.md
index 185cc8d..0397451 100644
--- a/README.md
+++ b/README.md
@@ -131,7 +131,7 @@ You can adjust this behavior in a number of ways:
   version = "0.24.2"
   features = ["bundled"]
   ```
-* When using the `bundled` feature, the build script will honor `SQLITE_MAX_VARIABLE_NUMBER` and `SQLITE_MAX_EXPR_DEPTH` variables.
+* When using the `bundled` feature, the build script will honor `SQLITE_MAX_VARIABLE_NUMBER` and `SQLITE_MAX_EXPR_DEPTH` variables. It will also honor a `SQLITE_FLAGS` variable, which can have a format like `"-USQLITE_ALPHA -DSQLITE_BETA SQLITE_GAMMA ..."`. That would disable the `SQLITE_ALPHA` flag, and set the `SQLITE_BETA` and `SQLITE_GAMMA` flags. (The initial `-D` can be omitted, as on the last one.)
 
 * When linking against a SQLite library already on the system (so *not* using the `bundled` feature), you can set the `SQLITE3_LIB_DIR` environment variable to point to a directory containing the library. You can also set the `SQLITE3_INCLUDE_DIR` variable to point to the directory containing `sqlite3.h`.
 * Installing the sqlite3 development packages will usually be all that is required, but
diff --git a/libsqlite3-sys/build.rs b/libsqlite3-sys/build.rs
index cefcf25..1dde9bc 100644
--- a/libsqlite3-sys/build.rs
+++ b/libsqlite3-sys/build.rs
@@ -138,18 +138,18 @@ mod build_bundled {
         }
         println!("cargo:rerun-if-env-changed=SQLITE_MAX_EXPR_DEPTH");
 
-        if let Ok(extras) = env::var("LIBSQLITE3_FLAGS") {
+        if let Ok(extras) = env::var("SQLITE_FLAGS") {
             for extra in extras.split_whitespace() {
                 if extra.starts_with("-D") || extra.starts_with("-U") {
                     cfg.flag(extra);
                 } else if extra.starts_with("SQLITE_") {
                     cfg.flag(&format!("-D{}", extra));
                 } else {
-                    panic!("Don't understand {} in LIBSQLITE3_FLAGS", extra);
+                    panic!("Don't understand {} in SQLITE_FLAGS", extra);
                 }
             }
         }
-        println!("cargo:rerun-if-env-changed=LIBSQLITE3_FLAGS");
+        println!("cargo:rerun-if-env-changed=SQLITE_FLAGS");
 
         cfg.compile("libsqlite3.a");