cmake: Add powerpc64 toolchain

circle.yml

@@ -21,6 +21,14 @@ commands:
             sudo apt -q update
             sudo apt install -qy libgmp-dev
 
+  install_powerpc64:
+    steps:
+      - run:
+          name: "Install powerpc64 toolchain"
+          command: |
+            sudo apt -q update
+            sudo apt -qy install g++-powerpc64-linux-gnu qemu-user-static
+
   check_code_format:
     steps:
       - run:
@@ -195,6 +203,15 @@ jobs:
       - build_and_test
       - benchmark
 
+  powerpc64:
+    environment:
+      BUILD_TYPE: Release
+      CMAKE_OPTIONS: -DCMAKE_TOOLCHAIN_FILE=~/project/cmake/toolchains/powerpc64.cmake -DINTX_BENCHMARKING=OFF
+    executor: linux-gcc-latest
+    steps:
+      - install_powerpc64
+      - build_and_test
+
   arm64:
     environment:
       BUILD_TYPE: Release
@@ -299,3 +316,4 @@ workflows:
       - macos
       - cmake-min
       - arm64
+      - powerpc64

cmake/toolchains/powerpc64.cmake

@@ -0,0 +1,15 @@
+# Cable: CMake Bootstrap Library.
+# Copyright 2018 Pawel Bylica.
+# Licensed under the Apache License, Version 2.0. See the LICENSE file.
+
+set(CMAKE_SYSTEM_PROCESSOR powerpc64)
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_C_COMPILER powerpc64-linux-gnu-gcc)
+set(CMAKE_CXX_COMPILER powerpc64-linux-gnu-g++)
+
+set(CMAKE_FIND_ROOT_PATH /usr/powerpc64-linux-gnu)
+SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+
+set(CMAKE_CROSSCOMPILING_EMULATOR qemu-ppc64-static;-L;${CMAKE_FIND_ROOT_PATH})