# Copyright 2015 Cloudera Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set(IMPALA_TOOLCHAIN ON)

# Set the root directory for the toolchain
set(TOOLCHAIN_ROOT $ENV{IMPALA_TOOLCHAIN})

if($ENV{USE_SYSTEM_GCC} EQUAL "0")
  # If Impala is built with the GCC from the toolchain, change compiler and link paths
  set(GCC_ROOT $ENV{IMPALA_TOOLCHAIN}/gcc-$ENV{IMPALA_GCC_VERSION})
  set(CMAKE_C_COMPILER ${GCC_ROOT}/bin/gcc)
  set(CMAKE_CXX_COMPILER ${GCC_ROOT}/bin/g++)

  # The rpath is needed to be able to run the binaries produced by the toolchain without
  # specifying an LD_LIBRARY_PATH
  set(TOOLCHAIN_LINK_FLAGS "-Wl,-rpath,${GCC_ROOT}/lib64")
  set(TOOLCHAIN_LINK_FLAGS "${TOOLCHAIN_LINK_FLAGS} -L${GCC_ROOT}/lib64")
endif()

if(NOT $ENV{IMPALA_CXX_COMPILER} STREQUAL "default")
  set(CMAKE_CXX_COMPILER $ENV{IMPALA_CXX_COMPILER})
endif()

message(STATUS "Setup toolchain link flags ${TOOLCHAIN_LINK_FLAGS}")
