bazel: added bazel build support to reuse DiskANN lib in external pro…

…jects

.bazelrc

@@ -0,0 +1,3 @@
+build --client_env=CC=g++
+build --client_env=CXX=g++
+build --client_env=BAZEL_CXXOPTS=-std=c++17

.gitignore

@@ -378,3 +378,7 @@ gperftools
 
 # Rust
 rust/target
+
+# bazel
+bazel-*
+MODULE.bazel*

BUILD

@@ -0,0 +1,18 @@
+# BUILD
+
+cc_library(
+    name = "diskann_library",
+    srcs = glob(["src/*.cpp"]),
+    hdrs = glob(["include/*.h", "include/tsl/*.h"]),
+    includes = ["include", "include/tsl"],
+    copts = [
+        "-ltcmalloc", "-Ofast", "-march=native", "-mtune=native",
+        "-I/usr/include/mkl", "-m64", "-Wl,--no-as-needed",
+        "-DMKL_ILP64", "-DNDEBUG", "-DUSE_AVX2",
+        "-mavx2", "-mfma", "-msse2",
+        "-ftree-vectorize", "-fno-builtin-malloc", "-fno-builtin-calloc", "-fno-builtin-realloc",
+        "-fno-builtin-free", "-fopenmp", "-fopenmp-simd",
+        "-funroll-loops", '-Wfatal-errors'
+    ],
+    visibility = ["//visibility:public"],
+)

WORKSPACE

@@ -0,0 +1 @@
+workspace(name = "microsoft_DiskANN")