From 80fd916d1a3fdb447b7e7c4c0358ae7f5d0f3838 Mon Sep 17 00:00:00 2001
From: sdong <siying.d@fb.com>
Date: Thu, 31 Oct 2019 13:56:50 -0700
Subject: [PATCH] Revert "[FB Internal] Remove code for FB-only toolchain
 (since GCC 4.8 is everywhere already)"

This reverts commit 61720850f631d1c430c92ffd8e498e8374a4b548.
---
 build_tools/build_detect_platform | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/build_tools/build_detect_platform b/build_tools/build_detect_platform
index e4bf4c592..55c107dc8 100755
--- a/build_tools/build_detect_platform
+++ b/build_tools/build_detect_platform
@@ -46,6 +46,19 @@ PLATFORM_CXXFLAGS="-std=c++11"
 # we currently depend on POSIX platform
 COMMON_FLAGS="-DROCKSDB_PLATFORM_POSIX -DROCKSDB_LIB_IO_POSIX"
 
+# Default to fbcode gcc on internal fb machines
+if [ -z "$ROCKSDB_NO_FBCODE" -a -d /mnt/gvfs/third-party ]; then
+    FBCODE_BUILD="true"
+    # If we're compiling with TSAN we need pic build
+    PIC_BUILD=$COMPILE_WITH_TSAN
+    if [ -z "$ROCKSDB_FBCODE_BUILD_WITH_481" ]; then
+      source "$PWD/build_tools/fbcode_config.sh"
+    else
+      # we need this to build with MySQL. Don't use for other purposes.
+      source "$PWD/build_tools/fbcode_config4.8.1.sh"
+    fi
+fi
+
 # Delete existing output, if it exists
 rm -f "$OUTPUT"
 touch "$OUTPUT"