CGAL users discussion list

["Sebastien Loriot (GeometryFactory)" <>]

From cmake doc:
http://www.cmake.org/cmake/help/v2.8.12/cmake.html#command:set

  set(<variable> <value1> ... <valueN>)

In this case <variable> is set to a semicolon separated list of values.

Try:
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

Sebastien.

On 08/25/2014 03:54 PM, Gaël Ecorchard wrote:
> Hi community,
>
> I have a problem compiling a ROS package with CGAL and "-std=c++11"
> flag. I think it's a problem with CGAL rather than ROS but I'm not sure.
>
> Here is a minimal CMakeLists.txt to reproduce the error:
> ------------------------------------------------------------------------
> cmake_minimum_required(VERSION 2.8.3) project(cgal_cmake_flags)
> find_package(catkin REQUIRED)
> set(CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS} " -std=c++11")
> find_package(CGAL REQUIRED COMPONENTS Core)
> set(CGAL_DONT_OVERRIDE_CMAKE_FLAGS TRUE CACHE BOOL "Don't override flags")
> message(CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS})
> include(${CGAL_USE_FILE})
> message(CMAKE_CXX_FLAGS: ${CMAKE_CXX_FLAGS})
> ------------------------------------------------------------------------
>
> During the cmake process, this line gets printed: "-- USING CXXFLAGS =
> '-g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat
> -Werror=format-security -D_FORTIFY_SOURCE=2 -frounding-math; -std=c++11
> -O3 -DNDEBUG'"
>
> You will notice the semi-colon after -frounding-math. This causes big
> problems when compiling. I tried "catkin_make
> -DCGAL_DONT_OVERRIDE_CMAKE_FLAGS=TRUE" but it didn't help.
>
> Does someone has experience setting c++11 standard and using CGAL with
> ROS (catkin)?
>
> Thanks a lot,
> Gaël