+ rust-libmimalloc-sys

Signed-off-by: Michel Alexandre Salim <salimma@fedoraproject.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/rust/libmimalloc-sys-use-system.patch b/rust/libmimalloc-sys-use-system.patch
new file mode 100644
index 0000000..1a90974
--- /dev/null
+++ b/rust/libmimalloc-sys-use-system.patch
@@ -0,0 +1,47 @@
+From 6d46e073040d03be4abffc599e11609febecf9fc Mon Sep 17 00:00:00 2001
+From: Michel Alexandre Salim <salimma@fedoraproject.org>
+Date: Mon, 4 Apr 2022 11:52:40 -0700
+Subject: [PATCH] Use system mimalloc if available
+
+When packaging for Fedora, bundled libraries are discouraged:
+https://docs.fedoraproject.org/en-US/fesco/Bundled_Software_policy/
+
+Build against the system mimalloc if we detect its header.
+
+Signed-off-by: Michel Alexandre Salim <salimma@fedoraproject.org>
+---
+ libmimalloc-sys/build.rs | 12 +++++++++---
+ 1 file changed, 9 insertions(+), 3 deletions(-)
+
+diff --git a/libmimalloc-sys/build.rs b/libmimalloc-sys/build.rs
+index 7cc9379..1afdf18 100644
+--- a/libmimalloc-sys/build.rs
++++ b/libmimalloc-sys/build.rs
+@@ -1,15 +1,21 @@
+ use std::env;
++use std::path;
+ 
+ fn main() {
++    let target_os = env::var("CARGO_CFG_TARGET_OS").expect("target_os not defined!");
++    let target_family = env::var("CARGO_CFG_TARGET_FAMILY").expect("target_family not defined!");
++
++    // use system mimalloc if available
++    if target_family == "unix" && path::Path::new("/usr/include/mimalloc.h").exists() {
++        return
++    }
++
+     let mut build = cc::Build::new();
+ 
+     build.include("c_src/mimalloc/include");
+     build.include("c_src/mimalloc/src");
+     build.file("c_src/mimalloc/src/static.c");
+ 
+-    let target_os = env::var("CARGO_CFG_TARGET_OS").expect("target_os not defined!");
+-    let target_family = env::var("CARGO_CFG_TARGET_FAMILY").expect("target_family not defined!");
+-
+     if env::var_os("CARGO_FEATURE_OVERRIDE").is_some() {
+         // Overriding malloc is only available on windows in shared mode, but we
+         // only ever build a static lib.
+-- 
+2.35.1
+