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rewrite C++11 check to look for basic classes

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Valient Gough 2014-10-26 11:29:54 -07:00
parent 01d409b2d7
commit b3355962ee
1 changed files with 16 additions and 20 deletions
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36
m4/ax_cxx_compile_stdcxx_11.m4
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@ -1,4 +1,4 @@
# ============================================================================
============================================================================
# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html
# ============================================================================
#
@ -37,30 +37,26 @@
#serial 4
m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [[
template <typename T>
struct check
{
static_assert(sizeof(int) <= sizeof(T), "not big enough");
};
// Checks that standard libraries are available.
#include <functional>
#include <memory>
#include <string>
struct Base {
virtual void f() {}
};
struct Child : public Base {
virtual void f() override {}
};
using namespace std::placeholders;
typedef check<check<bool>> right_angle_brackets;
bool testFn(std::function<bool(int)> op) {
return op(42);
}
int a;
decltype(a) b;
bool lenCheck(const std::shared_ptr<std::string> &str, int len) {
return str->size() > len;
}
typedef check<int> check_type;
check_type c;
check_type&& cr = static_cast<check_type&&>(c);
void check() {
std::shared_ptr<std::string> str(new std::string("hello world"));
auto d = a;
auto l = [](){};
testFn(std::bind(lenCheck, str, _1));
}
]])
AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl