From 320be1f060af6c105fe9bee2c46761142c794b8a Mon Sep 17 00:00:00 2001
From: Ziyang Hu <ziyang.hu@cantab.net>
Date: Wed, 6 Jul 2022 13:01:46 +0800
Subject: [PATCH] building on linux

---
 cozorocks/build_rocksdb.sh | 23 +++++++++++++++--------
 cozorocks/src/tests.rs     |  4 +---
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/cozorocks/build_rocksdb.sh b/cozorocks/build_rocksdb.sh
index 94e01ab2..939b1058 100644
--- a/cozorocks/build_rocksdb.sh
+++ b/cozorocks/build_rocksdb.sh
@@ -1,3 +1,10 @@
+if [[ "$OSTYPE" == "linux-gnu"* ]]; then
+  export CC=/usr/bin/clang-10
+  export CPP=/usr/bin/clang-cpp-10
+  export CXX=/usr/bin/clang++-10
+  export LD=/usr/bin/ld.lld-10
+fi
+
 mkdir -p deps
 INSTALL_DIR=$(readlink -f deps)
 echo "$INSTALL_DIR"
@@ -16,14 +23,14 @@ make clean
 export JEMALLOC_BASE=$INSTALL_DIR
 
 DEBUG_LEVEL=0 \
-JEMALLOC_INCLUDE=" -I $JEMALLOC_BASE/include/" \
-JEMALLOC_LIB=" $JEMALLOC_BASE/lib/libjemalloc.a" \
-USE_RTTI=1 \
-USE_CLANG=1 \
-JEMALLOC=1 \
-PREFIX=$INSTALL_DIR \
-make install-static || exit
+  JEMALLOC_INCLUDE=" -I $JEMALLOC_BASE/include/" \
+  JEMALLOC_LIB=" $JEMALLOC_BASE/lib/libjemalloc.a" \
+  USE_RTTI=1 \
+  USE_CLANG=1 \
+  JEMALLOC=1 \
+  PREFIX=$INSTALL_DIR \
+  make install-static || exit
 
 DEBUG_LEVEL=0 make libz.a libsnappy.a liblz4.a libzstd.a
 mv ./*.a ../deps/lib || exit
-make clean
\ No newline at end of file
+make clean
diff --git a/cozorocks/src/tests.rs b/cozorocks/src/tests.rs
index 04295969..f6b77d09 100644
--- a/cozorocks/src/tests.rs
+++ b/cozorocks/src/tests.rs
@@ -1,8 +1,6 @@
 use crate::*;
 
-#[allow(improper_ctypes_definitions)]
-#[no_mangle]
-extern "C" fn test_comparator(a: &[u8], b: &[u8]) -> i8 {
+fn test_comparator(a: &[u8], b: &[u8]) -> i8 {
     use std::cmp::Ordering::*;
     let res = a.cmp(b);