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Diffstat (limited to 'm4macros/ax_cpp14.m4')
| -rw-r--r-- | m4macros/ax_cpp14.m4 | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/m4macros/ax_cpp14.m4 b/m4macros/ax_cpp14.m4 new file mode 100644 index 0000000..bc44582 --- /dev/null +++ b/m4macros/ax_cpp14.m4 @@ -0,0 +1,253 @@ +AC_DEFUN([AX_ISC_CPP14], [ + +CXX_SAVED=$CXX +feature= +for retry in "none" "--std=c++14" "--std=c++1y" "fail"; do + if test "$retry" = "fail"; then + AC_MSG_ERROR([$feature (a C++14 feature) is not supported]) + fi + if test "$retry" != "none"; then + AC_MSG_WARN([unsupported C++14 feature]) + AC_MSG_NOTICE([retrying by adding $retry to $CXX]) + CXX="$CXX_SAVED $retry" + AC_MSG_CHECKING($retry support) + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [], + [int myincr = 1;])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + fi + + AC_MSG_CHECKING(std::unique_ptr support) + feature="std::unique_ptr" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <memory>], + [std::unique_ptr<int> a;])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(cbegin/cend support) + feature="cbegin/cend" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <string>], + [const std::string& s = "abcd"; + unsigned count = 0; + for (std::string::const_iterator i = s.cbegin(); + i != s.cend(); ++i) + if (*i == 'b') + ++count;])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(final method support) + feature="final method" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [class Foo { + public: + virtual ~Foo() {}; + virtual void bar() final; + };],[])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(override method support) + feature="override method" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [class Foo { + public: + virtual ~Foo() {}; + virtual void foobar(); + }; + class Bar : public Foo { + public: + virtual ~Bar() {}; + virtual void foobar() override; + };],[])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(aggregate initialization support) + feature="aggregate initialization" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <vector>], + [std::vector<int> foo = { 1, 2, 3};])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(variadic template support) + feature="variadic template" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [template<typename ... Args> + struct A { + void foo(Args... myargs) { return; }; + };], + [A<> a; + a.foo();])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(static_assert support) + feature="static_assert" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [static_assert(1 + 1 == 2, "");], + [])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(template alias) + feature="template alias" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [template<int i> + class I { + public: int get() { return i; }; + }; + using Zero = I<0>;], + [Zero Z; + return Z.get();])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(constexpr support) + feature="constexpr" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <string> + typedef char const* const Tag; + constexpr Tag FOOBAR = "FOOBAR";], + [const std::string foobar(FOOBAR); + return static_cast<int>(foobar.length());])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(enum class support) + feature="enum class" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [enum class FooBar { + FOO = 1, + BAR = 2 + };], + [FooBar f = FooBar::FOO; + return (f == FooBar::FOO ? 1 : 2);])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(range-for support) + feature="range-for support" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <vector> + std::vector<int> v = { 1, 2, 3, 4 };], + [int sum = 0; + for (auto i : v) { + sum += i; + } + return sum;])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(lambda support) + feature="lambda" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [], + [auto myincr = [[]](int x) { return x + 1; };])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(thread support) + feature="thread" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <thread> + #include <memory> + std::shared_ptr<std::thread> th;], + [th.reset(new std::thread([[]]() { return; })); + th->join();])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(mutex support) + feature="mutex" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <mutex> + std::mutex mtx;], + [std::lock_guard<std::mutex> lock(mtx);])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(condition variable support) + feature="condition variable" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <condition_variable> + std::mutex mtx; + std::condition_variable cv;], + [std::lock_guard<std::mutex> lock(mtx); + cv.notify_one();])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(atomic support) + feature="atomic" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <atomic> + std::atomic_flag flag;], + [])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(chrono support) + feature="chrono" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [#include <chrono> + using namespace std::chrono;], + [auto now = high_resolution_clock::now();])], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + + AC_MSG_CHECKING(variable template support) + feature="variable template" + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [template<class T> + constexpr T pi = T(3.1415926535897932385L);], + [int a = pi<int>;], + )], + [AC_MSG_RESULT([yes])], + [AC_MSG_RESULT([no]) + continue]) + break +done + +])dnl AX_ISC_CPP14 |