system info: OS X 10.10.5, Clang = Apple LLVM version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn), cmake = 2.8.12.2
Suppose I have some simple file, main.cpp:
#include <stdio.h>
#include <vector>
#include <algorithm>
int main(void)
{
std::vector<int> v{1, 2, 3, 4};
int sum = std::accumulate(v.begin(), v.end(), 0);
printf("Sum = %d\n", sum);
return 0;
}
When I run "clang++ -stdlib=libc++ -std=c++11 main.cpp" I get error:
main.cpp:11:20: error: no member named 'accumulate' in namespace 'std' int sum = std::accumulate(v.begin(), v.end(), 0);
When I look, using an IDE (Qt Creator), I see that the included header is /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm
when I look through my file system, I see that /usr/include/c++/4.2.1 exists with c++11 compliant headers.
Next, I use cmake to control larger builds (the above is just an example setup).
So here's a token CMakeLists.txt file for the above example:
project(c11Test)
cmake_minimum_required(VERSION 2.8)
set(CMAKE_VERBOSE_MAKEFILE ON)
set(CMAKE_CXX_FLAGS "-stdlib=libc++ -std=gnu++11")
add_executable(${PROJECT_NAME} main.cpp)
Which, when I build, creates this output (excerpt):
[100%] Building CXX object CMakeFiles/c11Test.dir/main.cpp.o /usr/bin/c++ -stdlib=libc++ -std=gnu++11 -o CMakeFiles/c11Test.dir/main.cpp.o -c /Users/username/c11Test/main.cpp /Users/username/c11Test/main.cpp:11:20: error: no member named 'accumulate' in namespace 'std' int sum = std::accumulate(v.begin(), v.end(), 0); ~~~~~^ 1 error generated.
I'm aware of this post, which seems to imply that all I need to do is just include these compiler flags. But that doesn't seem to work.
Furthermore, I probably need to build this on a variety of OS X computers at different versions, so I really wonder if there's a general solution I'm overlooking here?
