diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/ax_cxx_compile_stdcxx.m4 | 45 | ||||
| -rw-r--r-- | m4/ax_pthread.m4 | 42 |
2 files changed, 47 insertions, 40 deletions
diff --git a/m4/ax_cxx_compile_stdcxx.m4 b/m4/ax_cxx_compile_stdcxx.m4 index 5032bba80..43087b2e6 100644 --- a/m4/ax_cxx_compile_stdcxx.m4 +++ b/m4/ax_cxx_compile_stdcxx.m4 @@ -33,19 +33,19 @@ # Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com> # Copyright (c) 2015 Paul Norman <penorman@mac.com> # Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu> -# Copyright (c) 2016 Krzesimir Nowak <qdlacz@gmail.com> +# Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com> +# Copyright (c) 2019 Enji Cooper <yaneurabeya@gmail.com> # # Copying and distribution of this file, with or without modification, are # permitted in any medium without royalty provided the copyright notice # and this notice are preserved. This file is offered as-is, without any # warranty. -#serial 7 +#serial 11 dnl This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro dnl (serial version number 13). -AX_REQUIRE_DEFINED([AC_MSG_WARN]) AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"], [$1], [14], [ax_cxx_compile_alternatives="14 1y"], @@ -61,14 +61,6 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])]) AC_LANG_PUSH([C++])dnl ac_success=no - AC_CACHE_CHECK(whether $CXX supports C++$1 features by default, - ax_cv_cxx_compile_cxx$1, - [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])], - [ax_cv_cxx_compile_cxx$1=yes], - [ax_cv_cxx_compile_cxx$1=no])]) - if test x$ax_cv_cxx_compile_cxx$1 = xyes; then - ac_success=yes - fi m4_if([$2], [noext], [], [dnl if test x$ac_success = xno; then @@ -139,7 +131,6 @@ AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl [define if the compiler supports basic C++$1 syntax]) fi AC_SUBST(HAVE_CXX$1) - m4_if([$1], [17], [AC_MSG_WARN([C++17 is not yet standardized, so the checks may change in incompatible ways anytime])]) ]) @@ -199,11 +190,13 @@ namespace cxx11 struct Base { + virtual ~Base() {} virtual void f() {} }; struct Derived : public Base { + virtual ~Derived() override {} virtual void f() override {} }; @@ -587,20 +580,12 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[ #error "This is not a C++ compiler" -#elif __cplusplus <= 201402L +#elif __cplusplus < 201703L #error "This is not a C++17 compiler" #else -#if defined(__clang__) - #define REALLY_CLANG -#else - #if defined(__GNUC__) - #define REALLY_GCC - #endif -#endif - #include <initializer_list> #include <utility> #include <type_traits> @@ -608,16 +593,12 @@ m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[ namespace cxx17 { -#if !defined(REALLY_CLANG) namespace test_constexpr_lambdas { - // TODO: test it with clang++ from git - constexpr int foo = [](){return 42;}(); } -#endif // !defined(REALLY_CLANG) namespace test::nested_namespace::definitions { @@ -852,12 +833,9 @@ namespace cxx17 } -#if !defined(REALLY_CLANG) namespace test_template_argument_deduction_for_class_templates { - // TODO: test it with clang++ from git - template <typename T1, typename T2> struct pair { @@ -876,7 +854,6 @@ namespace cxx17 } } -#endif // !defined(REALLY_CLANG) namespace test_non_type_auto_template_parameters { @@ -890,12 +867,9 @@ namespace cxx17 } -#if !defined(REALLY_CLANG) namespace test_structured_bindings { - // TODO: test it with clang++ from git - int arr[2] = { 1, 2 }; std::pair<int, int> pr = { 1, 2 }; @@ -927,14 +901,10 @@ namespace cxx17 const auto [ x3, y3 ] = f3(); } -#endif // !defined(REALLY_CLANG) -#if !defined(REALLY_CLANG) namespace test_exception_spec_type_system { - // TODO: test it with clang++ from git - struct Good {}; struct Bad {}; @@ -952,7 +922,6 @@ namespace cxx17 static_assert (std::is_same_v<Good, decltype(f(g1, g2))>); } -#endif // !defined(REALLY_CLANG) namespace test_inline_variables { @@ -977,6 +946,6 @@ namespace cxx17 } // namespace cxx17 -#endif // __cplusplus <= 201402L +#endif // __cplusplus < 201703L ]]) diff --git a/m4/ax_pthread.m4 b/m4/ax_pthread.m4 index 5fbf9fe0d..07a9cd265 100644 --- a/m4/ax_pthread.m4 +++ b/m4/ax_pthread.m4 @@ -82,7 +82,8 @@ # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. -#serial 24 +#serial 25 +#arctica-serial 1 AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD]) AC_DEFUN([AX_PTHREAD], [ @@ -334,6 +335,42 @@ for ax_pthread_try_flag in $ax_pthread_flags; do PTHREAD_LIBS="-lpthread" ;; + -pthread) + AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag]) + PTHREAD_CFLAGS="$ax_pthread_try_flag" + + if test "x$GCC" = "xyes"; then + # Thanks to libtool bug #13550, we have to consider the possibility + # that -nostdlib will be used during compilation at some point. + # Try to determine the first pthread library available, + # ignoring any other variants. + for ax_pthread_try_lib_flag in $ax_pthread_flags; do + case $ax_pthread_try_lib_flag in + none|-*|pthread-config) + continue + ;; + + *) + PTHREAD_LIBS="-l$ax_pthread_try_lib_flag" + + ax_pthread_save_LIBS="$LIBS" + LIBS="$PTHREAD_LIBS $LIBS" + + # We only need to link a trivial program with + # the current library value. + # Linking should fail if the library doesn't + # exist, otherwise we should be good to go. + AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], + [LIBS="$ax_pthread_save_LIBS" + break], + [LIBS="$ax_pthread_save_LIBS" + PTHREAD_LIBS=""]) + ;; + esac + done + fi + ;; + -*) AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag]) PTHREAD_CFLAGS="$ax_pthread_try_flag" @@ -438,7 +475,8 @@ if test "x$ax_pthread_ok" = "xyes"; then AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT], [ax_cv_PTHREAD_PRIO_INHERIT], [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]], - [[int i = PTHREAD_PRIO_INHERIT;]])], + [[int i = PTHREAD_PRIO_INHERIT; + return i;]])], [ax_cv_PTHREAD_PRIO_INHERIT=yes], [ax_cv_PTHREAD_PRIO_INHERIT=no]) ]) |