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cmake: only enable CXX by default

This commit is contained in:
Christoph Junghans 2018-05-09 22:16:19 -06:00
parent 635383c00c
commit 2797afbf3e
1 changed files with 4 additions and 5 deletions
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9
cmake/CMakeLists.txt
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@ -4,7 +4,7 @@
# Created by Christoph Junghans and Richard Berger
cmake_minimum_required(VERSION 3.1)
project(lammps)
project(lammps LANGUAGES CXX)
set(SOVERSION 0)
set(LAMMPS_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../src)
set(LAMMPS_LIB_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../lib)
@ -39,8 +39,6 @@ if(NOT SRC_FILES STREQUAL SRC_FILES_CACHED)
set(SRC_FILES_CACHED "${SRC_FILES}" CACHE INTERNAL "List of file in LAMMPS_SOURCE_DIR" FORCE)
endif()
enable_language(CXX)
######################################################################
# compiler tests
# these need ot be done early (before further tests).
@ -73,6 +71,7 @@ if(ENABLE_MPI)
add_definitions(-DLAMMPS_LONGLONG_TO_LONG)
endif()
else()
enable_language(C)
file(GLOB MPI_SOURCES ${LAMMPS_SOURCE_DIR}/STUBS/mpi.c)
add_library(mpi_stubs STATIC ${MPI_SOURCES})
include_directories(${LAMMPS_SOURCE_DIR}/STUBS)
@ -359,9 +358,9 @@ endif()
########################################################################
# Basic system tests (standard libraries, headers, functions, types) #
########################################################################
include(CheckIncludeFile)
include(CheckIncludeFileCXX)
foreach(HEADER math.h)
check_include_file(${HEADER} FOUND_${HEADER})
check_include_file_cxx(${HEADER} FOUND_${HEADER})
if(NOT FOUND_${HEADER})
message(FATAL_ERROR "Could not find needed header - ${HEADER}")
endif(NOT FOUND_${HEADER})