texlive[46258] Build/source/libs/harfbuzz: use AX_CXX_COMPILE_STDCXX
commits+karl at tug.org
commits+karl at tug.org
Tue Jan 9 20:23:39 CET 2018
Revision: 46258
http://tug.org/svn/texlive?view=revision&revision=46258
Author: karl
Date: 2018-01-09 20:23:39 +0100 (Tue, 09 Jan 2018)
Log Message:
-----------
use AX_CXX_COMPILE_STDCXX for optional C++11 support, and KPSE_COMPILER_VISIBILITY for inlines-visibility, instead of hardwiring
Modified Paths:
--------------
trunk/Build/source/libs/harfbuzz/ChangeLog
trunk/Build/source/libs/harfbuzz/Makefile.in
trunk/Build/source/libs/harfbuzz/aclocal.m4
trunk/Build/source/libs/harfbuzz/config.h.in
trunk/Build/source/libs/harfbuzz/configure
trunk/Build/source/libs/harfbuzz/configure.ac
trunk/Build/source/libs/harfbuzz/include/Makefile.in
Modified: trunk/Build/source/libs/harfbuzz/ChangeLog
===================================================================
--- trunk/Build/source/libs/harfbuzz/ChangeLog 2018-01-09 18:53:05 UTC (rev 46257)
+++ trunk/Build/source/libs/harfbuzz/ChangeLog 2018-01-09 19:23:39 UTC (rev 46258)
@@ -1,3 +1,10 @@
+2018-01-09 Karl Berry <karl at freefriends.org>
+
+ * configure.ac: use AX_CXX_COMPILE_STDCXX([11],,[optional])
+ since this is supposed to work with C++11.
+ (KPSE_COMPILER_VISIBILITY): call this instead of hardwiring
+ -fvisibility-inlines-hidden.
+
2017-12-26 Karl Berry <karl at tug.org>
* configure.ac (CXXFLAGS): add -D_GNU_SOURCE.
Modified: trunk/Build/source/libs/harfbuzz/Makefile.in
===================================================================
--- trunk/Build/source/libs/harfbuzz/Makefile.in 2018-01-09 18:53:05 UTC (rev 46257)
+++ trunk/Build/source/libs/harfbuzz/Makefile.in 2018-01-09 19:23:39 UTC (rev 46258)
@@ -91,10 +91,12 @@
@build_TRUE at check_PROGRAMS = hbtest$(EXEEXT)
subdir = .
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/../../m4/kpse-common.m4 \
+am__aclocal_m4_deps = $(top_srcdir)/../../m4/ax_cxx_compile_stdcxx.m4 \
+ $(top_srcdir)/../../m4/kpse-common.m4 \
$(top_srcdir)/../../m4/kpse-graphite2-flags.m4 \
$(top_srcdir)/../../m4/kpse-icu-flags.m4 \
$(top_srcdir)/../../m4/kpse-lib-version.m4 \
+ $(top_srcdir)/../../m4/kpse-visibility.m4 \
$(top_srcdir)/../../m4/kpse-warnings.m4 \
$(top_srcdir)/version.ac $(top_srcdir)/configure.ac
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
@@ -540,6 +542,7 @@
GRAPHITE2_LIBS = @GRAPHITE2_LIBS@
GREP = @GREP@
HARFBUZZ_TREE = @HARFBUZZ_TREE@
+HAVE_CXX11 = @HAVE_CXX11@
HB_VERSION = @HB_VERSION@
HB_VERSION_MAJOR = @HB_VERSION_MAJOR@
HB_VERSION_MICRO = @HB_VERSION_MICRO@
@@ -576,6 +579,8 @@
SHELL = @SHELL@
STRIP = @STRIP@
VERSION = @VERSION@
+VISIBILITY_CFLAGS = @VISIBILITY_CFLAGS@
+VISIBILITY_CXXFLAGS = @VISIBILITY_CXXFLAGS@
WARNING_CFLAGS = @WARNING_CFLAGS@
WARNING_CXXFLAGS = @WARNING_CXXFLAGS@
abs_builddir = @abs_builddir@
Modified: trunk/Build/source/libs/harfbuzz/aclocal.m4
===================================================================
--- trunk/Build/source/libs/harfbuzz/aclocal.m4 2018-01-09 18:53:05 UTC (rev 46257)
+++ trunk/Build/source/libs/harfbuzz/aclocal.m4 2018-01-09 19:23:39 UTC (rev 46258)
@@ -1186,8 +1186,10 @@
AC_SUBST([am__untar])
]) # _AM_PROG_TAR
+m4_include([../../m4/ax_cxx_compile_stdcxx.m4])
m4_include([../../m4/kpse-common.m4])
m4_include([../../m4/kpse-graphite2-flags.m4])
m4_include([../../m4/kpse-icu-flags.m4])
m4_include([../../m4/kpse-lib-version.m4])
+m4_include([../../m4/kpse-visibility.m4])
m4_include([../../m4/kpse-warnings.m4])
Modified: trunk/Build/source/libs/harfbuzz/config.h.in
===================================================================
--- trunk/Build/source/libs/harfbuzz/config.h.in 2018-01-09 18:53:05 UTC (rev 46257)
+++ trunk/Build/source/libs/harfbuzz/config.h.in 2018-01-09 19:23:39 UTC (rev 46258)
@@ -15,6 +15,9 @@
/* Use Core Text backend */
#undef HAVE_CORETEXT
+/* define if the compiler supports basic C++11 syntax */
+#undef HAVE_CXX11
+
/* Define to 1 if you have the `getpagesize' function. */
#undef HAVE_GETPAGESIZE
Modified: trunk/Build/source/libs/harfbuzz/configure
===================================================================
--- trunk/Build/source/libs/harfbuzz/configure 2018-01-09 18:53:05 UTC (rev 46257)
+++ trunk/Build/source/libs/harfbuzz/configure 2018-01-09 19:23:39 UTC (rev 46258)
@@ -653,6 +653,9 @@
build_vendor
build_cpu
build
+VISIBILITY_CXXFLAGS
+VISIBILITY_CFLAGS
+HAVE_CXX11
LN_S
RANLIB
WARNING_CXXFLAGS
@@ -5463,6 +5466,1091 @@
fi
+# Theoretically harfbuzz does not require C++11?
+
+ ax_cxx_compile_alternatives="11 0x" ax_cxx_compile_cxx11_required=false
+ ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+ ac_success=no
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++11 features by default" >&5
+$as_echo_n "checking whether $CXX supports C++11 features by default... " >&6; }
+if ${ax_cv_cxx_compile_cxx11+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+ namespace test_static_assert
+ {
+
+ template <typename T>
+ struct check
+ {
+ static_assert(sizeof(int) <= sizeof(T), "not big enough");
+ };
+
+ }
+
+ namespace test_final_override
+ {
+
+ struct Base
+ {
+ virtual void f() {}
+ };
+
+ struct Derived : public Base
+ {
+ virtual void f() override {}
+ };
+
+ }
+
+ namespace test_double_right_angle_brackets
+ {
+
+ template < typename T >
+ struct check {};
+
+ typedef check<void> single_type;
+ typedef check<check<void>> double_type;
+ typedef check<check<check<void>>> triple_type;
+ typedef check<check<check<check<void>>>> quadruple_type;
+
+ }
+
+ namespace test_decltype
+ {
+
+ int
+ f()
+ {
+ int a = 1;
+ decltype(a) b = 2;
+ return a + b;
+ }
+
+ }
+
+ namespace test_type_deduction
+ {
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static const bool value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static const bool value = true;
+ };
+
+ template < typename T1, typename T2 >
+ auto
+ add(T1 a1, T2 a2) -> decltype(a1 + a2)
+ {
+ return a1 + a2;
+ }
+
+ int
+ test(const int c, volatile int v)
+ {
+ static_assert(is_same<int, decltype(0)>::value == true, "");
+ static_assert(is_same<int, decltype(c)>::value == false, "");
+ static_assert(is_same<int, decltype(v)>::value == false, "");
+ auto ac = c;
+ auto av = v;
+ auto sumi = ac + av + 'x';
+ auto sumf = ac + av + 1.0;
+ static_assert(is_same<int, decltype(ac)>::value == true, "");
+ static_assert(is_same<int, decltype(av)>::value == true, "");
+ static_assert(is_same<int, decltype(sumi)>::value == true, "");
+ static_assert(is_same<int, decltype(sumf)>::value == false, "");
+ static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+ return (sumf > 0.0) ? sumi : add(c, v);
+ }
+
+ }
+
+ namespace test_noexcept
+ {
+
+ int f() { return 0; }
+ int g() noexcept { return 0; }
+
+ static_assert(noexcept(f()) == false, "");
+ static_assert(noexcept(g()) == true, "");
+
+ }
+
+ namespace test_constexpr
+ {
+
+ template < typename CharT >
+ unsigned long constexpr
+ strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+ {
+ return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+ }
+
+ template < typename CharT >
+ unsigned long constexpr
+ strlen_c(const CharT *const s) noexcept
+ {
+ return strlen_c_r(s, 0UL);
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("1") == 1UL, "");
+ static_assert(strlen_c("example") == 7UL, "");
+ static_assert(strlen_c("another\0example") == 7UL, "");
+
+ }
+
+ namespace test_rvalue_references
+ {
+
+ template < int N >
+ struct answer
+ {
+ static constexpr int value = N;
+ };
+
+ answer<1> f(int&) { return answer<1>(); }
+ answer<2> f(const int&) { return answer<2>(); }
+ answer<3> f(int&&) { return answer<3>(); }
+
+ void
+ test()
+ {
+ int i = 0;
+ const int c = 0;
+ static_assert(decltype(f(i))::value == 1, "");
+ static_assert(decltype(f(c))::value == 2, "");
+ static_assert(decltype(f(0))::value == 3, "");
+ }
+
+ }
+
+ namespace test_uniform_initialization
+ {
+
+ struct test
+ {
+ static const int zero {};
+ static const int one {1};
+ };
+
+ static_assert(test::zero == 0, "");
+ static_assert(test::one == 1, "");
+
+ }
+
+ namespace test_lambdas
+ {
+
+ void
+ test1()
+ {
+ auto lambda1 = [](){};
+ auto lambda2 = lambda1;
+ lambda1();
+ lambda2();
+ }
+
+ int
+ test2()
+ {
+ auto a = [](int i, int j){ return i + j; }(1, 2);
+ auto b = []() -> int { return '0'; }();
+ auto c = [=](){ return a + b; }();
+ auto d = [&](){ return c; }();
+ auto e = [a, &b](int x) mutable {
+ const auto identity = [](int y){ return y; };
+ for (auto i = 0; i < a; ++i)
+ a += b--;
+ return x + identity(a + b);
+ }(0);
+ return a + b + c + d + e;
+ }
+
+ int
+ test3()
+ {
+ const auto nullary = [](){ return 0; };
+ const auto unary = [](int x){ return x; };
+ using nullary_t = decltype(nullary);
+ using unary_t = decltype(unary);
+ const auto higher1st = [](nullary_t f){ return f(); };
+ const auto higher2nd = [unary](nullary_t f1){
+ return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+ };
+ return higher1st(nullary) + higher2nd(nullary)(unary);
+ }
+
+ }
+
+ namespace test_variadic_templates
+ {
+
+ template <int...>
+ struct sum;
+
+ template <int N0, int... N1toN>
+ struct sum<N0, N1toN...>
+ {
+ static constexpr auto value = N0 + sum<N1toN...>::value;
+ };
+
+ template <>
+ struct sum<>
+ {
+ static constexpr auto value = 0;
+ };
+
+ static_assert(sum<>::value == 0, "");
+ static_assert(sum<1>::value == 1, "");
+ static_assert(sum<23>::value == 23, "");
+ static_assert(sum<1, 2>::value == 3, "");
+ static_assert(sum<5, 5, 11>::value == 21, "");
+ static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+ }
+
+ // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+ // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+ // because of this.
+ namespace test_template_alias_sfinae
+ {
+
+ struct foo {};
+
+ template<typename T>
+ using member = typename T::member_type;
+
+ template<typename T>
+ void func(...) {}
+
+ template<typename T>
+ void func(member<T>*) {}
+
+ void test();
+
+ void test() { func<foo>(0); }
+
+ }
+
+} // namespace cxx11
+
+#endif // __cplusplus >= 201103L
+
+
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+ ax_cv_cxx_compile_cxx11=yes
+else
+ ax_cv_cxx_compile_cxx11=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_cxx_compile_cxx11" >&5
+$as_echo "$ax_cv_cxx_compile_cxx11" >&6; }
+ if test x$ax_cv_cxx_compile_cxx11 = xyes; then
+ ac_success=yes
+ fi
+
+ if test x$ac_success = xno; then
+ for alternative in ${ax_cxx_compile_alternatives}; do
+ switch="-std=gnu++${alternative}"
+ cachevar=`$as_echo "ax_cv_cxx_compile_cxx11_$switch" | $as_tr_sh`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++11 features with $switch" >&5
+$as_echo_n "checking whether $CXX supports C++11 features with $switch... " >&6; }
+if eval \${$cachevar+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_save_CXX="$CXX"
+ CXX="$CXX $switch"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+ namespace test_static_assert
+ {
+
+ template <typename T>
+ struct check
+ {
+ static_assert(sizeof(int) <= sizeof(T), "not big enough");
+ };
+
+ }
+
+ namespace test_final_override
+ {
+
+ struct Base
+ {
+ virtual void f() {}
+ };
+
+ struct Derived : public Base
+ {
+ virtual void f() override {}
+ };
+
+ }
+
+ namespace test_double_right_angle_brackets
+ {
+
+ template < typename T >
+ struct check {};
+
+ typedef check<void> single_type;
+ typedef check<check<void>> double_type;
+ typedef check<check<check<void>>> triple_type;
+ typedef check<check<check<check<void>>>> quadruple_type;
+
+ }
+
+ namespace test_decltype
+ {
+
+ int
+ f()
+ {
+ int a = 1;
+ decltype(a) b = 2;
+ return a + b;
+ }
+
+ }
+
+ namespace test_type_deduction
+ {
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static const bool value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static const bool value = true;
+ };
+
+ template < typename T1, typename T2 >
+ auto
+ add(T1 a1, T2 a2) -> decltype(a1 + a2)
+ {
+ return a1 + a2;
+ }
+
+ int
+ test(const int c, volatile int v)
+ {
+ static_assert(is_same<int, decltype(0)>::value == true, "");
+ static_assert(is_same<int, decltype(c)>::value == false, "");
+ static_assert(is_same<int, decltype(v)>::value == false, "");
+ auto ac = c;
+ auto av = v;
+ auto sumi = ac + av + 'x';
+ auto sumf = ac + av + 1.0;
+ static_assert(is_same<int, decltype(ac)>::value == true, "");
+ static_assert(is_same<int, decltype(av)>::value == true, "");
+ static_assert(is_same<int, decltype(sumi)>::value == true, "");
+ static_assert(is_same<int, decltype(sumf)>::value == false, "");
+ static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+ return (sumf > 0.0) ? sumi : add(c, v);
+ }
+
+ }
+
+ namespace test_noexcept
+ {
+
+ int f() { return 0; }
+ int g() noexcept { return 0; }
+
+ static_assert(noexcept(f()) == false, "");
+ static_assert(noexcept(g()) == true, "");
+
+ }
+
+ namespace test_constexpr
+ {
+
+ template < typename CharT >
+ unsigned long constexpr
+ strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+ {
+ return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+ }
+
+ template < typename CharT >
+ unsigned long constexpr
+ strlen_c(const CharT *const s) noexcept
+ {
+ return strlen_c_r(s, 0UL);
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("1") == 1UL, "");
+ static_assert(strlen_c("example") == 7UL, "");
+ static_assert(strlen_c("another\0example") == 7UL, "");
+
+ }
+
+ namespace test_rvalue_references
+ {
+
+ template < int N >
+ struct answer
+ {
+ static constexpr int value = N;
+ };
+
+ answer<1> f(int&) { return answer<1>(); }
+ answer<2> f(const int&) { return answer<2>(); }
+ answer<3> f(int&&) { return answer<3>(); }
+
+ void
+ test()
+ {
+ int i = 0;
+ const int c = 0;
+ static_assert(decltype(f(i))::value == 1, "");
+ static_assert(decltype(f(c))::value == 2, "");
+ static_assert(decltype(f(0))::value == 3, "");
+ }
+
+ }
+
+ namespace test_uniform_initialization
+ {
+
+ struct test
+ {
+ static const int zero {};
+ static const int one {1};
+ };
+
+ static_assert(test::zero == 0, "");
+ static_assert(test::one == 1, "");
+
+ }
+
+ namespace test_lambdas
+ {
+
+ void
+ test1()
+ {
+ auto lambda1 = [](){};
+ auto lambda2 = lambda1;
+ lambda1();
+ lambda2();
+ }
+
+ int
+ test2()
+ {
+ auto a = [](int i, int j){ return i + j; }(1, 2);
+ auto b = []() -> int { return '0'; }();
+ auto c = [=](){ return a + b; }();
+ auto d = [&](){ return c; }();
+ auto e = [a, &b](int x) mutable {
+ const auto identity = [](int y){ return y; };
+ for (auto i = 0; i < a; ++i)
+ a += b--;
+ return x + identity(a + b);
+ }(0);
+ return a + b + c + d + e;
+ }
+
+ int
+ test3()
+ {
+ const auto nullary = [](){ return 0; };
+ const auto unary = [](int x){ return x; };
+ using nullary_t = decltype(nullary);
+ using unary_t = decltype(unary);
+ const auto higher1st = [](nullary_t f){ return f(); };
+ const auto higher2nd = [unary](nullary_t f1){
+ return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+ };
+ return higher1st(nullary) + higher2nd(nullary)(unary);
+ }
+
+ }
+
+ namespace test_variadic_templates
+ {
+
+ template <int...>
+ struct sum;
+
+ template <int N0, int... N1toN>
+ struct sum<N0, N1toN...>
+ {
+ static constexpr auto value = N0 + sum<N1toN...>::value;
+ };
+
+ template <>
+ struct sum<>
+ {
+ static constexpr auto value = 0;
+ };
+
+ static_assert(sum<>::value == 0, "");
+ static_assert(sum<1>::value == 1, "");
+ static_assert(sum<23>::value == 23, "");
+ static_assert(sum<1, 2>::value == 3, "");
+ static_assert(sum<5, 5, 11>::value == 21, "");
+ static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+ }
+
+ // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+ // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+ // because of this.
+ namespace test_template_alias_sfinae
+ {
+
+ struct foo {};
+
+ template<typename T>
+ using member = typename T::member_type;
+
+ template<typename T>
+ void func(...) {}
+
+ template<typename T>
+ void func(member<T>*) {}
+
+ void test();
+
+ void test() { func<foo>(0); }
+
+ }
+
+} // namespace cxx11
+
+#endif // __cplusplus >= 201103L
+
+
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+ eval $cachevar=yes
+else
+ eval $cachevar=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ CXX="$ac_save_CXX"
+fi
+eval ac_res=\$$cachevar
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ if eval test x\$$cachevar = xyes; then
+ CXX="$CXX $switch"
+ if test -n "$CXXCPP" ; then
+ CXXCPP="$CXXCPP $switch"
+ fi
+ ac_success=yes
+ break
+ fi
+ done
+ fi
+
+ if test x$ac_success = xno; then
+ for alternative in ${ax_cxx_compile_alternatives}; do
+ for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
+ cachevar=`$as_echo "ax_cv_cxx_compile_cxx11_$switch" | $as_tr_sh`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++11 features with $switch" >&5
+$as_echo_n "checking whether $CXX supports C++11 features with $switch... " >&6; }
+if eval \${$cachevar+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_save_CXX="$CXX"
+ CXX="$CXX $switch"
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+
+// If the compiler admits that it is not ready for C++11, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201103L
+
+#error "This is not a C++11 compiler"
+
+#else
+
+namespace cxx11
+{
+
+ namespace test_static_assert
+ {
+
+ template <typename T>
+ struct check
+ {
+ static_assert(sizeof(int) <= sizeof(T), "not big enough");
+ };
+
+ }
+
+ namespace test_final_override
+ {
+
+ struct Base
+ {
+ virtual void f() {}
+ };
+
+ struct Derived : public Base
+ {
+ virtual void f() override {}
+ };
+
+ }
+
+ namespace test_double_right_angle_brackets
+ {
+
+ template < typename T >
+ struct check {};
+
+ typedef check<void> single_type;
+ typedef check<check<void>> double_type;
+ typedef check<check<check<void>>> triple_type;
+ typedef check<check<check<check<void>>>> quadruple_type;
+
+ }
+
+ namespace test_decltype
+ {
+
+ int
+ f()
+ {
+ int a = 1;
+ decltype(a) b = 2;
+ return a + b;
+ }
+
+ }
+
+ namespace test_type_deduction
+ {
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static const bool value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static const bool value = true;
+ };
+
+ template < typename T1, typename T2 >
+ auto
+ add(T1 a1, T2 a2) -> decltype(a1 + a2)
+ {
+ return a1 + a2;
+ }
+
+ int
+ test(const int c, volatile int v)
+ {
+ static_assert(is_same<int, decltype(0)>::value == true, "");
+ static_assert(is_same<int, decltype(c)>::value == false, "");
+ static_assert(is_same<int, decltype(v)>::value == false, "");
+ auto ac = c;
+ auto av = v;
+ auto sumi = ac + av + 'x';
+ auto sumf = ac + av + 1.0;
+ static_assert(is_same<int, decltype(ac)>::value == true, "");
+ static_assert(is_same<int, decltype(av)>::value == true, "");
+ static_assert(is_same<int, decltype(sumi)>::value == true, "");
+ static_assert(is_same<int, decltype(sumf)>::value == false, "");
+ static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
+ return (sumf > 0.0) ? sumi : add(c, v);
+ }
+
+ }
+
+ namespace test_noexcept
+ {
+
+ int f() { return 0; }
+ int g() noexcept { return 0; }
+
+ static_assert(noexcept(f()) == false, "");
+ static_assert(noexcept(g()) == true, "");
+
+ }
+
+ namespace test_constexpr
+ {
+
+ template < typename CharT >
+ unsigned long constexpr
+ strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
+ {
+ return *s ? strlen_c_r(s + 1, acc + 1) : acc;
+ }
+
+ template < typename CharT >
+ unsigned long constexpr
+ strlen_c(const CharT *const s) noexcept
+ {
+ return strlen_c_r(s, 0UL);
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("1") == 1UL, "");
+ static_assert(strlen_c("example") == 7UL, "");
+ static_assert(strlen_c("another\0example") == 7UL, "");
+
+ }
+
+ namespace test_rvalue_references
+ {
+
+ template < int N >
+ struct answer
+ {
+ static constexpr int value = N;
+ };
+
+ answer<1> f(int&) { return answer<1>(); }
+ answer<2> f(const int&) { return answer<2>(); }
+ answer<3> f(int&&) { return answer<3>(); }
+
+ void
+ test()
+ {
+ int i = 0;
+ const int c = 0;
+ static_assert(decltype(f(i))::value == 1, "");
+ static_assert(decltype(f(c))::value == 2, "");
+ static_assert(decltype(f(0))::value == 3, "");
+ }
+
+ }
+
+ namespace test_uniform_initialization
+ {
+
+ struct test
+ {
+ static const int zero {};
+ static const int one {1};
+ };
+
+ static_assert(test::zero == 0, "");
+ static_assert(test::one == 1, "");
+
+ }
+
+ namespace test_lambdas
+ {
+
+ void
+ test1()
+ {
+ auto lambda1 = [](){};
+ auto lambda2 = lambda1;
+ lambda1();
+ lambda2();
+ }
+
+ int
+ test2()
+ {
+ auto a = [](int i, int j){ return i + j; }(1, 2);
+ auto b = []() -> int { return '0'; }();
+ auto c = [=](){ return a + b; }();
+ auto d = [&](){ return c; }();
+ auto e = [a, &b](int x) mutable {
+ const auto identity = [](int y){ return y; };
+ for (auto i = 0; i < a; ++i)
+ a += b--;
+ return x + identity(a + b);
+ }(0);
+ return a + b + c + d + e;
+ }
+
+ int
+ test3()
+ {
+ const auto nullary = [](){ return 0; };
+ const auto unary = [](int x){ return x; };
+ using nullary_t = decltype(nullary);
+ using unary_t = decltype(unary);
+ const auto higher1st = [](nullary_t f){ return f(); };
+ const auto higher2nd = [unary](nullary_t f1){
+ return [unary, f1](unary_t f2){ return f2(unary(f1())); };
+ };
+ return higher1st(nullary) + higher2nd(nullary)(unary);
+ }
+
+ }
+
+ namespace test_variadic_templates
+ {
+
+ template <int...>
+ struct sum;
+
+ template <int N0, int... N1toN>
+ struct sum<N0, N1toN...>
+ {
+ static constexpr auto value = N0 + sum<N1toN...>::value;
+ };
+
+ template <>
+ struct sum<>
+ {
+ static constexpr auto value = 0;
+ };
+
+ static_assert(sum<>::value == 0, "");
+ static_assert(sum<1>::value == 1, "");
+ static_assert(sum<23>::value == 23, "");
+ static_assert(sum<1, 2>::value == 3, "");
+ static_assert(sum<5, 5, 11>::value == 21, "");
+ static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
+
+ }
+
+ // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
+ // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
+ // because of this.
+ namespace test_template_alias_sfinae
+ {
+
+ struct foo {};
+
+ template<typename T>
+ using member = typename T::member_type;
+
+ template<typename T>
+ void func(...) {}
+
+ template<typename T>
+ void func(member<T>*) {}
+
+ void test();
+
+ void test() { func<foo>(0); }
+
+ }
+
+} // namespace cxx11
+
+#endif // __cplusplus >= 201103L
+
+
+
+_ACEOF
+if ac_fn_cxx_try_compile "$LINENO"; then :
+ eval $cachevar=yes
+else
+ eval $cachevar=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+ CXX="$ac_save_CXX"
+fi
+eval ac_res=\$$cachevar
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
+$as_echo "$ac_res" >&6; }
+ if eval test x\$$cachevar = xyes; then
+ CXX="$CXX $switch"
+ if test -n "$CXXCPP" ; then
+ CXXCPP="$CXXCPP $switch"
+ fi
+ ac_success=yes
+ break
+ fi
+ done
+ if test x$ac_success = xyes; then
+ break
+ fi
+ done
+ fi
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+ if test x$ax_cxx_compile_cxx11_required = xtrue; then
+ if test x$ac_success = xno; then
+ as_fn_error $? "*** A compiler with support for C++11 language features is required." "$LINENO" 5
+ fi
+ fi
+ if test x$ac_success = xno; then
+ HAVE_CXX11=0
+ { $as_echo "$as_me:${as_lineno-$LINENO}: No compiler with C++11 support was found" >&5
+$as_echo "$as_me: No compiler with C++11 support was found" >&6;}
+ else
+ HAVE_CXX11=1
+
+$as_echo "#define HAVE_CXX11 1" >>confdefs.h
+
+ fi
+
+
+
+
+echo 'dbg:_KPSE_COMPILER_VISIBILITY called.' >&5
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking CFLAGS for C to hide external symbols" >&5
+$as_echo_n "checking CFLAGS for C to hide external symbols... " >&6; }
+if ${kpse_cv_visibility_cflags+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+kpse_cv_visibility_cflags=unknown
+kpse_save_flags=$CFLAGS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdio.h>
+ extern void foo(void);
+ void foo(void){printf("foo\n");}
+_ACEOF
+# FIXME: Add tests for non-GNU compilers
+for kpse_flag in '-fvisibility=hidden -fvisibility-inlines-hidden' '-fvisibility=hidden'; do
+ CFLAGS="$kpse_save_flags -Werror $kpse_flag"
+ if ac_fn_c_try_compile "$LINENO"; then :
+ kpse_cv_visibility_cflags=$kpse_flag; break
+fi
+rm -f core conftest.err conftest.$ac_objext
+done
+CFLAGS=$kpse_save_flags
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $kpse_cv_visibility_cflags" >&5
+$as_echo "$kpse_cv_visibility_cflags" >&6; }
+case $kpse_cv_visibility_cflags in #(
+ unknown) :
+ ;; #(
+ *) :
+ VISIBILITY_CFLAGS=$kpse_cv_visibility_cflags
+ ;;
+esac
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking CXXFLAGS for C++ to hide external symbols" >&5
+$as_echo_n "checking CXXFLAGS for C++ to hide external symbols... " >&6; }
+if ${kpse_cv_visibility_cxxflags+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_ext=cpp
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+kpse_cv_visibility_cxxflags=unknown
+kpse_save_flags=$CXXFLAGS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <stdio.h>
+ extern void foo(void);
+ void foo(void){printf("foo\n");}
+_ACEOF
+# FIXME: Add tests for non-GNU compilers
+for kpse_flag in '-fvisibility=hidden -fvisibility-inlines-hidden' '-fvisibility=hidden'; do
+ CXXFLAGS="$kpse_save_flags -Werror $kpse_flag"
+ if ac_fn_cxx_try_compile "$LINENO"; then :
+ kpse_cv_visibility_cxxflags=$kpse_flag; break
+fi
+rm -f core conftest.err conftest.$ac_objext
+done
+CXXFLAGS=$kpse_save_flags
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $kpse_cv_visibility_cxxflags" >&5
+$as_echo "$kpse_cv_visibility_cxxflags" >&6; }
+case $kpse_cv_visibility_cxxflags in #(
+ unknown) :
+ ;; #(
+ *) :
+ VISIBILITY_CXXFLAGS=$kpse_cv_visibility_cxxflags
+ ;;
+esac
+
+
+
+
## _KPSE_INIT: Initialize TL infrastructure
kpse_BLD=`(cd "./../../." && pwd)`
kpse_SRC=`(cd "$srcdir/../../." && pwd)`
@@ -6331,9 +7419,6 @@
# Make symbols link locally
LDFLAGS="$LDFLAGS -Bsymbolic-functions"
- # Choose C++ version
- CXXFLAGS="$CXXFLAGS -std=c++11 -D_GNU_SOURCE"
-
# Make sure we don't link to libstdc++
CXXFLAGS="$CXXFLAGS -fno-rtti -fno-exceptions"
@@ -6341,15 +7426,6 @@
CXXFLAGS="$CXXFLAGS -Wcast-align"
case "$host" in
- *-*-mingw*)
- ;;
- *)
- # Hide inline methods
- CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
- ;;
- esac
-
- case "$host" in
arm-*-*)
if test "x$ac_cv_alignof_struct_char__" != x1; then
# Request byte alignment
Modified: trunk/Build/source/libs/harfbuzz/configure.ac
===================================================================
--- trunk/Build/source/libs/harfbuzz/configure.ac 2018-01-09 18:53:05 UTC (rev 46257)
+++ trunk/Build/source/libs/harfbuzz/configure.ac 2018-01-09 19:23:39 UTC (rev 46258)
@@ -28,6 +28,11 @@
AC_PROG_RANLIB
AC_PROG_LN_S
+# Theoretically harfbuzz does not require C++11?
+AX_CXX_COMPILE_STDCXX([11],,[optional])
+
+KPSE_COMPILER_VISIBILITY
+
KPSE_GRAPHITE2_FLAGS
KPSE_ICU_FLAGS
@@ -43,9 +48,6 @@
# Make symbols link locally
LDFLAGS="$LDFLAGS -Bsymbolic-functions"
- # Choose C++ version
- CXXFLAGS="$CXXFLAGS -std=c++11 -D_GNU_SOURCE"
-
# Make sure we don't link to libstdc++
CXXFLAGS="$CXXFLAGS -fno-rtti -fno-exceptions"
@@ -53,15 +55,6 @@
CXXFLAGS="$CXXFLAGS -Wcast-align"
case "$host" in
- *-*-mingw*)
- ;;
- *)
- # Hide inline methods
- CXXFLAGS="$CXXFLAGS -fvisibility-inlines-hidden"
- ;;
- esac
-
- case "$host" in
arm-*-*)
if test "x$ac_cv_alignof_struct_char__" != x1; then
# Request byte alignment
Modified: trunk/Build/source/libs/harfbuzz/include/Makefile.in
===================================================================
--- trunk/Build/source/libs/harfbuzz/include/Makefile.in 2018-01-09 18:53:05 UTC (rev 46257)
+++ trunk/Build/source/libs/harfbuzz/include/Makefile.in 2018-01-09 19:23:39 UTC (rev 46258)
@@ -89,10 +89,12 @@
host_triplet = @host@
subdir = include
ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/../../m4/kpse-common.m4 \
+am__aclocal_m4_deps = $(top_srcdir)/../../m4/ax_cxx_compile_stdcxx.m4 \
+ $(top_srcdir)/../../m4/kpse-common.m4 \
$(top_srcdir)/../../m4/kpse-graphite2-flags.m4 \
$(top_srcdir)/../../m4/kpse-icu-flags.m4 \
$(top_srcdir)/../../m4/kpse-lib-version.m4 \
+ $(top_srcdir)/../../m4/kpse-visibility.m4 \
$(top_srcdir)/../../m4/kpse-warnings.m4 \
$(top_srcdir)/version.ac $(top_srcdir)/configure.ac
am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
@@ -154,6 +156,7 @@
GRAPHITE2_LIBS = @GRAPHITE2_LIBS@
GREP = @GREP@
HARFBUZZ_TREE = @HARFBUZZ_TREE@
+HAVE_CXX11 = @HAVE_CXX11@
HB_VERSION = @HB_VERSION@
HB_VERSION_MAJOR = @HB_VERSION_MAJOR@
HB_VERSION_MICRO = @HB_VERSION_MICRO@
@@ -190,6 +193,8 @@
SHELL = @SHELL@
STRIP = @STRIP@
VERSION = @VERSION@
+VISIBILITY_CFLAGS = @VISIBILITY_CFLAGS@
+VISIBILITY_CXXFLAGS = @VISIBILITY_CXXFLAGS@
WARNING_CFLAGS = @WARNING_CFLAGS@
WARNING_CXXFLAGS = @WARNING_CXXFLAGS@
abs_builddir = @abs_builddir@
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