@@ -690,6 +690,8 @@ extra_host_zlib_configure_flags
extra_host_libiberty_configure_flags
stage1_languages
host_libs_picflag
+CRAB1_LIBS
+enable_libdiagnostics
PICFLAG
host_shared
gcc_host_pie
@@ -711,8 +713,8 @@ gmplibs
PGO_BUILD_LTO_CFLAGS
PGO_BUILD_USE_CFLAGS
PGO_BUILD_GEN_CFLAGS
-HAVE_CXX11_FOR_BUILD
-HAVE_CXX11
+HAVE_CXX14_FOR_BUILD
+HAVE_CXX14
do_compare
GDC
GNATMAKE
@@ -842,6 +844,7 @@ enable_linker_plugin_configure_flags
enable_linker_plugin_flags
enable_host_pie
enable_host_shared
+enable_libdiagnostics
enable_stage1_languages
enable_objc_gc
with_target_bdw_gc
@@ -1576,6 +1579,7 @@ Optional Features:
plugins [none]
--enable-host-pie build position independent host executables
--enable-host-shared build host code as shared libraries
+ --enable-libdiagnostics build libdiagnostics shared library
--enable-stage1-languages[=all]
choose additional languages to build during stage1.
Mostly useful for compiler development
@@ -3092,7 +3096,7 @@ case "${ENABLE_GOLD}" in
# Check for target supported by gold.
case "${target}" in
i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
- | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-* | loongarch*-*-*)
+ | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
configdirs="$configdirs gold"
if test x${ENABLE_GOLD} = xdefault; then
default_ld=gold
@@ -5807,6 +5811,7 @@ else
have_gdc=no
fi
+ACX_PROG_CARGO
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to compare bootstrapped objects" >&5
$as_echo_n "checking how to compare bootstrapped objects... " >&6; }
if ${gcc_cv_prog_cmp_skip+:} false; then :
@@ -5885,13 +5890,13 @@ $as_echo "$as_me: WARNING: trying to bootstrap a cross compiler" >&2;}
;;
esac
-# When bootstrapping with GCC, build stage 1 in C++11 mode to ensure that a
-# C++11 compiler can still start the bootstrap. Otherwise, if building GCC,
-# require C++11 (or higher).
+# When bootstrapping with GCC, build stage 1 in C++14 mode to ensure that a
+# C++14 compiler can still start the bootstrap. Otherwise, if building GCC,
+# require C++14 (or higher).
if test "$enable_bootstrap:$GXX" = "yes:yes"; then
- CXX="$CXX -std=c++11"
+ CXX="$CXX -std=c++14"
elif test "$have_compiler" = yes; then
- ax_cxx_compile_alternatives="11 0x" ax_cxx_compile_cxx11_required=true
+ ax_cxx_compile_alternatives="14 1y" ax_cxx_compile_cxx14_required=true
ac_ext=cpp
ac_cpp='$CXXCPP $CPPFLAGS'
ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -5899,9 +5904,9 @@ ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ex
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 :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++14 features by default" >&5
+$as_echo_n "checking whether $CXX supports C++14 features by default... " >&6; }
+if ${ax_cv_cxx_compile_cxx14+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -6194,26 +6199,146 @@ namespace cxx11
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+ namespace test_polymorphic_lambdas
+ {
+
+ int
+ test()
+ {
+ const auto lambda = [](auto&&... args){
+ const auto istiny = [](auto x){
+ return (sizeof(x) == 1UL) ? 1 : 0;
+ };
+ const int aretiny[] = { istiny(args)... };
+ return aretiny[0];
+ };
+ return lambda(1, 1L, 1.0f, '1');
+ }
+
+ }
+
+ namespace test_binary_literals
+ {
+
+ constexpr auto ivii = 0b0000000000101010;
+ static_assert(ivii == 42, "wrong value");
+
+ }
+
+ namespace test_generalized_constexpr
+ {
+
+ template < typename CharT >
+ constexpr unsigned long
+ strlen_c(const CharT *const s) noexcept
+ {
+ auto length = 0UL;
+ for (auto p = s; *p; ++p)
+ ++length;
+ return length;
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("x") == 1UL, "");
+ static_assert(strlen_c("test") == 4UL, "");
+ static_assert(strlen_c("another\0test") == 7UL, "");
+
+ }
+
+ namespace test_lambda_init_capture
+ {
+
+ int
+ test()
+ {
+ auto x = 0;
+ const auto lambda1 = [a = x](int b){ return a + b; };
+ const auto lambda2 = [a = lambda1(x)](){ return a; };
+ return lambda2();
+ }
+
+ }
+
+ namespace test_digit_separators
+ {
+
+ constexpr auto ten_million = 100'000'000;
+ static_assert(ten_million == 100000000, "");
+
+ }
+
+ namespace test_return_type_deduction
+ {
+
+ auto f(int& x) { return x; }
+ decltype(auto) g(int& x) { return x; }
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static constexpr auto value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static constexpr auto value = true;
+ };
+
+ int
+ test()
+ {
+ auto x = 0;
+ static_assert(is_same<int, decltype(f(x))>::value, "");
+ static_assert(is_same<int&, decltype(g(x))>::value, "");
+ return x;
+ }
+
+ }
+
+} // namespace cxx14
+
+#endif // __cplusplus >= 201402L
+
+
+
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
- ax_cv_cxx_compile_cxx11=yes
+ ax_cv_cxx_compile_cxx14=yes
else
- ax_cv_cxx_compile_cxx11=no
+ ax_cv_cxx_compile_cxx14=no
fi
rm -f core conftest.err conftest.$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
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_cxx_compile_cxx14" >&5
+$as_echo "$ax_cv_cxx_compile_cxx14" >&6; }
+ if test x$ax_cv_cxx_compile_cxx14 = 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 $switch... " >&6; }
+ cachevar=`$as_echo "ax_cv_cxx_compile_cxx14_$switch" | $as_tr_sh`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++14 features with $switch" >&5
+$as_echo_n "checking whether $CXX supports C++14 features with $switch... " >&6; }
if eval \${$cachevar+:} false; then :
$as_echo_n "(cached) " >&6
else
@@ -6509,6 +6634,126 @@ namespace cxx11
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+ namespace test_polymorphic_lambdas
+ {
+
+ int
+ test()
+ {
+ const auto lambda = [](auto&&... args){
+ const auto istiny = [](auto x){
+ return (sizeof(x) == 1UL) ? 1 : 0;
+ };
+ const int aretiny[] = { istiny(args)... };
+ return aretiny[0];
+ };
+ return lambda(1, 1L, 1.0f, '1');
+ }
+
+ }
+
+ namespace test_binary_literals
+ {
+
+ constexpr auto ivii = 0b0000000000101010;
+ static_assert(ivii == 42, "wrong value");
+
+ }
+
+ namespace test_generalized_constexpr
+ {
+
+ template < typename CharT >
+ constexpr unsigned long
+ strlen_c(const CharT *const s) noexcept
+ {
+ auto length = 0UL;
+ for (auto p = s; *p; ++p)
+ ++length;
+ return length;
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("x") == 1UL, "");
+ static_assert(strlen_c("test") == 4UL, "");
+ static_assert(strlen_c("another\0test") == 7UL, "");
+
+ }
+
+ namespace test_lambda_init_capture
+ {
+
+ int
+ test()
+ {
+ auto x = 0;
+ const auto lambda1 = [a = x](int b){ return a + b; };
+ const auto lambda2 = [a = lambda1(x)](){ return a; };
+ return lambda2();
+ }
+
+ }
+
+ namespace test_digit_separators
+ {
+
+ constexpr auto ten_million = 100'000'000;
+ static_assert(ten_million == 100000000, "");
+
+ }
+
+ namespace test_return_type_deduction
+ {
+
+ auto f(int& x) { return x; }
+ decltype(auto) g(int& x) { return x; }
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static constexpr auto value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static constexpr auto value = true;
+ };
+
+ int
+ test()
+ {
+ auto x = 0;
+ static_assert(is_same<int, decltype(f(x))>::value, "");
+ static_assert(is_same<int&, decltype(g(x))>::value, "");
+ return x;
+ }
+
+ }
+
+} // namespace cxx14
+
+#endif // __cplusplus >= 201402L
+
+
+
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
eval $cachevar=yes
@@ -6535,9 +6780,9 @@ $as_echo "$ac_res" >&6; }
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 $switch... " >&6; }
+ cachevar=`$as_echo "ax_cv_cxx_compile_cxx14_$switch" | $as_tr_sh`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++14 features with $switch" >&5
+$as_echo_n "checking whether $CXX supports C++14 features with $switch... " >&6; }
if eval \${$cachevar+:} false; then :
$as_echo_n "(cached) " >&6
else
@@ -6833,6 +7078,126 @@ namespace cxx11
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+ namespace test_polymorphic_lambdas
+ {
+
+ int
+ test()
+ {
+ const auto lambda = [](auto&&... args){
+ const auto istiny = [](auto x){
+ return (sizeof(x) == 1UL) ? 1 : 0;
+ };
+ const int aretiny[] = { istiny(args)... };
+ return aretiny[0];
+ };
+ return lambda(1, 1L, 1.0f, '1');
+ }
+
+ }
+
+ namespace test_binary_literals
+ {
+
+ constexpr auto ivii = 0b0000000000101010;
+ static_assert(ivii == 42, "wrong value");
+
+ }
+
+ namespace test_generalized_constexpr
+ {
+
+ template < typename CharT >
+ constexpr unsigned long
+ strlen_c(const CharT *const s) noexcept
+ {
+ auto length = 0UL;
+ for (auto p = s; *p; ++p)
+ ++length;
+ return length;
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("x") == 1UL, "");
+ static_assert(strlen_c("test") == 4UL, "");
+ static_assert(strlen_c("another\0test") == 7UL, "");
+
+ }
+
+ namespace test_lambda_init_capture
+ {
+
+ int
+ test()
+ {
+ auto x = 0;
+ const auto lambda1 = [a = x](int b){ return a + b; };
+ const auto lambda2 = [a = lambda1(x)](){ return a; };
+ return lambda2();
+ }
+
+ }
+
+ namespace test_digit_separators
+ {
+
+ constexpr auto ten_million = 100'000'000;
+ static_assert(ten_million == 100000000, "");
+
+ }
+
+ namespace test_return_type_deduction
+ {
+
+ auto f(int& x) { return x; }
+ decltype(auto) g(int& x) { return x; }
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static constexpr auto value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static constexpr auto value = true;
+ };
+
+ int
+ test()
+ {
+ auto x = 0;
+ static_assert(is_same<int, decltype(f(x))>::value, "");
+ static_assert(is_same<int&, decltype(g(x))>::value, "");
+ return x;
+ }
+
+ }
+
+} // namespace cxx14
+
+#endif // __cplusplus >= 201402L
+
+
+
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
eval $cachevar=yes
@@ -6866,41 +7231,41 @@ ac_compile='$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$ax_cxx_compile_cxx11_required = xtrue; then
+ if test x$ax_cxx_compile_cxx14_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
+ as_fn_error $? "*** A compiler with support for C++14 language features is required." "$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;}
+ HAVE_CXX14=0
+ { $as_echo "$as_me:${as_lineno-$LINENO}: No compiler with C++14 support was found" >&5
+$as_echo "$as_me: No compiler with C++14 support was found" >&6;}
else
- HAVE_CXX11=1
+ HAVE_CXX14=1
-$as_echo "#define HAVE_CXX11 1" >>confdefs.h
+$as_echo "#define HAVE_CXX14 1" >>confdefs.h
fi
if test "${build}" != "${host}"; then
- ax_cxx_compile_alternatives="11 0x" ax_cxx_compile_cxx11_required=true
+ ax_cxx_compile_alternatives="14 1y" ax_cxx_compile_cxx14_required=true
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
- ax_cv_cxx_compile_cxx11_orig_cxx="$CXX"
- ax_cv_cxx_compile_cxx11_orig_cxxflags="$CXXFLAGS"
- ax_cv_cxx_compile_cxx11_orig_cppflags="$CPPFLAGS"
+ ax_cv_cxx_compile_cxx14_orig_cxx="$CXX"
+ ax_cv_cxx_compile_cxx14_orig_cxxflags="$CXXFLAGS"
+ ax_cv_cxx_compile_cxx14_orig_cppflags="$CPPFLAGS"
CXX="$CXX_FOR_BUILD"
CXXFLAGS="$CXXFLAGS_FOR_BUILD"
CPPFLAGS="$CPPFLAGS_FOR_BUILD"
- { $as_echo "$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_FOR_BUILD+:} false; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++14 features by default" >&5
+$as_echo_n "checking whether $CXX supports C++14 features by default... " >&6; }
+if ${ax_cv_cxx_compile_cxx14_FOR_BUILD+:} false; then :
$as_echo_n "(cached) " >&6
else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
@@ -7193,26 +7558,146 @@ namespace cxx11
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+ namespace test_polymorphic_lambdas
+ {
+
+ int
+ test()
+ {
+ const auto lambda = [](auto&&... args){
+ const auto istiny = [](auto x){
+ return (sizeof(x) == 1UL) ? 1 : 0;
+ };
+ const int aretiny[] = { istiny(args)... };
+ return aretiny[0];
+ };
+ return lambda(1, 1L, 1.0f, '1');
+ }
+
+ }
+
+ namespace test_binary_literals
+ {
+
+ constexpr auto ivii = 0b0000000000101010;
+ static_assert(ivii == 42, "wrong value");
+
+ }
+
+ namespace test_generalized_constexpr
+ {
+
+ template < typename CharT >
+ constexpr unsigned long
+ strlen_c(const CharT *const s) noexcept
+ {
+ auto length = 0UL;
+ for (auto p = s; *p; ++p)
+ ++length;
+ return length;
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("x") == 1UL, "");
+ static_assert(strlen_c("test") == 4UL, "");
+ static_assert(strlen_c("another\0test") == 7UL, "");
+
+ }
+
+ namespace test_lambda_init_capture
+ {
+
+ int
+ test()
+ {
+ auto x = 0;
+ const auto lambda1 = [a = x](int b){ return a + b; };
+ const auto lambda2 = [a = lambda1(x)](){ return a; };
+ return lambda2();
+ }
+
+ }
+
+ namespace test_digit_separators
+ {
+
+ constexpr auto ten_million = 100'000'000;
+ static_assert(ten_million == 100000000, "");
+
+ }
+
+ namespace test_return_type_deduction
+ {
+
+ auto f(int& x) { return x; }
+ decltype(auto) g(int& x) { return x; }
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static constexpr auto value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static constexpr auto value = true;
+ };
+
+ int
+ test()
+ {
+ auto x = 0;
+ static_assert(is_same<int, decltype(f(x))>::value, "");
+ static_assert(is_same<int&, decltype(g(x))>::value, "");
+ return x;
+ }
+
+ }
+
+} // namespace cxx14
+
+#endif // __cplusplus >= 201402L
+
+
+
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
- ax_cv_cxx_compile_cxx11_FOR_BUILD=yes
+ ax_cv_cxx_compile_cxx14_FOR_BUILD=yes
else
- ax_cv_cxx_compile_cxx11_FOR_BUILD=no
+ ax_cv_cxx_compile_cxx14_FOR_BUILD=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_cxx_compile_cxx11_FOR_BUILD" >&5
-$as_echo "$ax_cv_cxx_compile_cxx11_FOR_BUILD" >&6; }
- if test x$ax_cv_cxx_compile_cxx11_FOR_BUILD = xyes; then
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_cxx_compile_cxx14_FOR_BUILD" >&5
+$as_echo "$ax_cv_cxx_compile_cxx14_FOR_BUILD" >&6; }
+ if test x$ax_cv_cxx_compile_cxx14_FOR_BUILD = 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=`$as_echo "ax_cv_cxx_compile_cxx11_FOR_BUILD_$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 $switch... " >&6; }
+ cachevar=`$as_echo "ax_cv_cxx_compile_cxx14_FOR_BUILD_$switch" | $as_tr_sh`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++14 features with $switch" >&5
+$as_echo_n "checking whether $CXX supports C++14 features with $switch... " >&6; }
if eval \${$cachevar+:} false; then :
$as_echo_n "(cached) " >&6
else
@@ -7439,72 +7924,192 @@ namespace cxx11
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())); };
+ 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
+
+
+
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+ namespace test_polymorphic_lambdas
+ {
+
+ int
+ test()
+ {
+ const auto lambda = [](auto&&... args){
+ const auto istiny = [](auto x){
+ return (sizeof(x) == 1UL) ? 1 : 0;
+ };
+ const int aretiny[] = { istiny(args)... };
+ return aretiny[0];
};
- return higher1st(nullary) + higher2nd(nullary)(unary);
+ return lambda(1, 1L, 1.0f, '1');
}
}
- namespace test_variadic_templates
+ namespace test_binary_literals
{
- template <int...>
- struct sum;
+ constexpr auto ivii = 0b0000000000101010;
+ static_assert(ivii == 42, "wrong value");
- template <int N0, int... N1toN>
- struct sum<N0, N1toN...>
- {
- static constexpr auto value = N0 + sum<N1toN...>::value;
- };
+ }
- template <>
- struct sum<>
+ namespace test_generalized_constexpr
+ {
+
+ template < typename CharT >
+ constexpr unsigned long
+ strlen_c(const CharT *const s) noexcept
{
- static constexpr auto value = 0;
- };
+ auto length = 0UL;
+ for (auto p = s; *p; ++p)
+ ++length;
+ return length;
+ }
- 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, "");
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("x") == 1UL, "");
+ static_assert(strlen_c("test") == 4UL, "");
+ static_assert(strlen_c("another\0test") == 7UL, "");
}
- // 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
+ namespace test_lambda_init_capture
{
- struct foo {};
+ int
+ test()
+ {
+ auto x = 0;
+ const auto lambda1 = [a = x](int b){ return a + b; };
+ const auto lambda2 = [a = lambda1(x)](){ return a; };
+ return lambda2();
+ }
- template<typename T>
- using member = typename T::member_type;
+ }
- template<typename T>
- void func(...) {}
+ namespace test_digit_separators
+ {
- template<typename T>
- void func(member<T>*) {}
+ constexpr auto ten_million = 100'000'000;
+ static_assert(ten_million == 100000000, "");
- void test();
+ }
- void test() { func<foo>(0); }
+ namespace test_return_type_deduction
+ {
+
+ auto f(int& x) { return x; }
+ decltype(auto) g(int& x) { return x; }
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static constexpr auto value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static constexpr auto value = true;
+ };
+
+ int
+ test()
+ {
+ auto x = 0;
+ static_assert(is_same<int, decltype(f(x))>::value, "");
+ static_assert(is_same<int&, decltype(g(x))>::value, "");
+ return x;
+ }
}
-} // namespace cxx11
+} // namespace cxx14
-#endif // __cplusplus >= 201103L
+#endif // __cplusplus >= 201402L
@@ -7534,9 +8139,9 @@ $as_echo "$ac_res" >&6; }
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=`$as_echo "ax_cv_cxx_compile_cxx11_FOR_BUILD_$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 $switch... " >&6; }
+ cachevar=`$as_echo "ax_cv_cxx_compile_cxx14_FOR_BUILD_$switch" | $as_tr_sh`
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether $CXX supports C++14 features with $switch" >&5
+$as_echo_n "checking whether $CXX supports C++14 features with $switch... " >&6; }
if eval \${$cachevar+:} false; then :
$as_echo_n "(cached) " >&6
else
@@ -7832,6 +8437,126 @@ namespace cxx11
+
+// If the compiler admits that it is not ready for C++14, why torture it?
+// Hopefully, this will speed up the test.
+
+#ifndef __cplusplus
+
+#error "This is not a C++ compiler"
+
+#elif __cplusplus < 201402L
+
+#error "This is not a C++14 compiler"
+
+#else
+
+namespace cxx14
+{
+
+ namespace test_polymorphic_lambdas
+ {
+
+ int
+ test()
+ {
+ const auto lambda = [](auto&&... args){
+ const auto istiny = [](auto x){
+ return (sizeof(x) == 1UL) ? 1 : 0;
+ };
+ const int aretiny[] = { istiny(args)... };
+ return aretiny[0];
+ };
+ return lambda(1, 1L, 1.0f, '1');
+ }
+
+ }
+
+ namespace test_binary_literals
+ {
+
+ constexpr auto ivii = 0b0000000000101010;
+ static_assert(ivii == 42, "wrong value");
+
+ }
+
+ namespace test_generalized_constexpr
+ {
+
+ template < typename CharT >
+ constexpr unsigned long
+ strlen_c(const CharT *const s) noexcept
+ {
+ auto length = 0UL;
+ for (auto p = s; *p; ++p)
+ ++length;
+ return length;
+ }
+
+ static_assert(strlen_c("") == 0UL, "");
+ static_assert(strlen_c("x") == 1UL, "");
+ static_assert(strlen_c("test") == 4UL, "");
+ static_assert(strlen_c("another\0test") == 7UL, "");
+
+ }
+
+ namespace test_lambda_init_capture
+ {
+
+ int
+ test()
+ {
+ auto x = 0;
+ const auto lambda1 = [a = x](int b){ return a + b; };
+ const auto lambda2 = [a = lambda1(x)](){ return a; };
+ return lambda2();
+ }
+
+ }
+
+ namespace test_digit_separators
+ {
+
+ constexpr auto ten_million = 100'000'000;
+ static_assert(ten_million == 100000000, "");
+
+ }
+
+ namespace test_return_type_deduction
+ {
+
+ auto f(int& x) { return x; }
+ decltype(auto) g(int& x) { return x; }
+
+ template < typename T1, typename T2 >
+ struct is_same
+ {
+ static constexpr auto value = false;
+ };
+
+ template < typename T >
+ struct is_same<T, T>
+ {
+ static constexpr auto value = true;
+ };
+
+ int
+ test()
+ {
+ auto x = 0;
+ static_assert(is_same<int, decltype(f(x))>::value, "");
+ static_assert(is_same<int&, decltype(g(x))>::value, "");
+ return x;
+ }
+
+ }
+
+} // namespace cxx14
+
+#endif // __cplusplus >= 201402L
+
+
+
_ACEOF
if ac_fn_cxx_try_compile "$LINENO"; then :
eval $cachevar=yes
@@ -7861,28 +8586,28 @@ $as_echo "$ac_res" >&6; }
CXX_FOR_BUILD="$CXX"
CXXFLAGS_FOR_BUILD="$CXXFLAGS"
CPPFLAGS_FOR_BUILD="$CPPFLAGS"
- CXX="$ax_cv_cxx_compile_cxx11_orig_cxx"
- CXXFLAGS="$ax_cv_cxx_compile_cxx11_orig_cxxflags"
- CPPFLAGS="$ax_cv_cxx_compile_cxx11_orig_cppflags"
+ CXX="$ax_cv_cxx_compile_cxx14_orig_cxx"
+ CXXFLAGS="$ax_cv_cxx_compile_cxx14_orig_cxxflags"
+ CPPFLAGS="$ax_cv_cxx_compile_cxx14_orig_cppflags"
ac_ext=c
ac_cpp='$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$ax_cxx_compile_cxx11_required = xtrue; then
+ if test x$ax_cxx_compile_cxx14_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
+ as_fn_error $? "*** A compiler with support for C++14 language features is required." "$LINENO" 5
fi
fi
if test x$ac_success = xno; then
- HAVE_CXX11_FOR_BUILD=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;}
+ HAVE_CXX14_FOR_BUILD=0
+ { $as_echo "$as_me:${as_lineno-$LINENO}: No compiler with C++14 support was found" >&5
+$as_echo "$as_me: No compiler with C++14 support was found" >&6;}
else
- HAVE_CXX11_FOR_BUILD=1
+ HAVE_CXX14_FOR_BUILD=1
-$as_echo "#define HAVE_CXX11_FOR_BUILD 1" >>confdefs.h
+$as_echo "#define HAVE_CXX14_FOR_BUILD 1" >>confdefs.h
fi
@@ -8847,6 +9572,179 @@ fi
+
+# Check for libdiagnostics support.
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable libdiagnostics" >&5
+$as_echo_n "checking whether to enable libdiagnostics... " >&6; }
+# Check whether --enable-libdiagnostics was given.
+if test "${enable_libdiagnostics+set}" = set; then :
+ enableval=$enable_libdiagnostics; enable_libdiagnostics=$enableval
+else
+ enable_libdiagnostics=no
+fi
+
+
+if test x$enable_libdiagnostics = xyes; then
+ # Disable libdiagnostics if -enable-host-shared not specified
+ # but not if building for Mingw. All code in Windows
+ # is position independent code (PIC).
+ case $target in
+ *mingw*) ;;
+ *)
+ if test x$host_shared != xyes; then
+ as_fn_error $? "
+Enabling libdiagnostics requires --enable-host-shared.
+
+--enable-host-shared typically slows the rest of the compiler down by
+a few %, so you must explicitly enable it.
+
+If you want to build both libdiagnostics and the regular compiler, it is often
+best to do this via two separate configure/builds, in separate
+directories, to avoid imposing the performance cost of
+--enable-host-shared on the regular compiler." "$LINENO" 5
+ fi
+ ;;
+ esac
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $enable_libdiagnostics" >&5
+$as_echo "$enable_libdiagnostics" >&6; }
+
+
+
+# Rust requires -ldl and -lpthread if you are using an old glibc that does not include them by
+# default, so we check for them here
+# We are doing the test here and not in the gcc/configure to be able to nicely disable the
+# build of the Rust frontend in case a dep is missing.
+missing_rust_dynlibs=none
+
+save_LIBS="$LIBS"
+LIBS=
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing dlopen" >&5
+$as_echo_n "checking for library containing dlopen... " >&6; }
+if ${ac_cv_search_dlopen+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char dlopen ();
+int
+main ()
+{
+return dlopen ();
+ ;
+ return 0;
+}
+_ACEOF
+for ac_lib in '' dl; do
+ if test -z "$ac_lib"; then
+ ac_res="none required"
+ else
+ ac_res=-l$ac_lib
+ LIBS="-l$ac_lib $ac_func_search_save_LIBS"
+ fi
+ if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_search_dlopen=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext
+ if ${ac_cv_search_dlopen+:} false; then :
+ break
+fi
+done
+if ${ac_cv_search_dlopen+:} false; then :
+
+else
+ ac_cv_search_dlopen=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_dlopen" >&5
+$as_echo "$ac_cv_search_dlopen" >&6; }
+ac_res=$ac_cv_search_dlopen
+if test "$ac_res" != no; then :
+ test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing pthread_create" >&5
+$as_echo_n "checking for library containing pthread_create... " >&6; }
+if ${ac_cv_search_pthread_create+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char pthread_create ();
+int
+main ()
+{
+return pthread_create ();
+ ;
+ return 0;
+}
+_ACEOF
+for ac_lib in '' pthread; do
+ if test -z "$ac_lib"; then
+ ac_res="none required"
+ else
+ ac_res=-l$ac_lib
+ LIBS="-l$ac_lib $ac_func_search_save_LIBS"
+ fi
+ if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_search_pthread_create=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext
+ if ${ac_cv_search_pthread_create+:} false; then :
+ break
+fi
+done
+if ${ac_cv_search_pthread_create+:} false; then :
+
+else
+ ac_cv_search_pthread_create=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_pthread_create" >&5
+$as_echo "$ac_cv_search_pthread_create" >&6; }
+ac_res=$ac_cv_search_pthread_create
+if test "$ac_res" != no; then :
+ test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+CRAB1_LIBS="$LIBS"
+LIBS="$save_LIBS"
+
+if test "$ac_cv_search_dlopen" = no; then
+ missing_rust_dynlibs="libdl"
+fi
+
+if test "$ac_cv_search_pthread_create" = no; then
+ missing_rust_dynlibs="$missing_rust_dynlibs, libpthread"
+fi
+
+CRAB1_LIBS="$CRAB1_LIBS"
+
+
# If we are building PIC/PIE host executables, and we are building dependent
# libs (e.g. GMP) in-tree those libs need to be configured to generate PIC
# code.
@@ -8923,7 +9821,7 @@ if test -d ${srcdir}/gcc; then
lang_requires_boot_languages=
# set srcdir during sourcing lang_frag to the gcc dir.
# Sadly overriding srcdir on the . line doesn't work in plain sh as it
- # polutes this shell
+ # pollutes this shell
saved_srcdir=${srcdir}
srcdir=${srcdir}/gcc . ${lang_frag}
srcdir=${saved_srcdir}
@@ -9087,6 +9985,26 @@ $as_echo "$as_me: WARNING: GDC is required to build $language" >&2;}
;;
esac
+ # Disable Rust if we are missing some required C libraries for the Rust runtime.
+ case ${add_this_lang}:${language}:${missing_rust_dynlibs} in
+ *:rust:none)
+ # Nothing to do - we're not missing any C libraries
+ ;;
+ yes:rust:*)
+ as_fn_error $? "some C libraries are required to build $language: $missing_rust_dynlibs" "$LINENO" 5
+ add_this_lang=unsupported
+ ;;
+ all:rust:*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: some C libraries are required to build $language: $missing_rust_dynlibs" >&5
+$as_echo "$as_me: WARNING: some C libraries are required to build $language: $missing_rust_dynlibs" >&2;}
+ add_this_lang=unsupported
+ ;;
+ *:rust:*)
+ # Silently disable.
+ add_this_lang=unsupported
+ ;;
+ esac
+
# Disable jit if -enable-host-shared not specified
# but not if building for Mingw. All code in Windows
# is position independent code (PIC).
@@ -9120,6 +10038,37 @@ $as_echo "$as_me: WARNING: --enable-host-shared required to build $language" >&2
;;
esac
+ # Pre-conditions to consider whether cargo being supported.
+ if test x"$have_cargo" = xyes \
+ && test x"$build" != x"$host"; then
+ # Until <https://github.com/Rust-GCC/gccrs/issues/2898>
+ # "'cargo' should build for the host system" is resolved:
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: use of cargo not yet supported here in Canadian cross configurations" >&5
+$as_echo "$as_me: WARNING: use of cargo not yet supported here in Canadian cross configurations" >&2;}
+ have_cargo=no
+ else
+ # Assume that cargo-produced object files are compatible with what
+ # we're going to build here.
+ :
+ fi
+ # Disable Rust if cargo is unavailable.
+ case ${add_this_lang}:${language}:${have_cargo} in
+ yes:rust:no)
+ # Specifically requested language; tell them.
+ as_fn_error $? "cargo is required to build $language" "$LINENO" 5
+ ;;
+ all:rust:no)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: cargo is required to build $language" >&5
+$as_echo "$as_me: WARNING: cargo is required to build $language" >&2;}
+ add_this_lang=unsupported
+ ;;
+ *:rust:no)
+ # Silently disable.
+ add_this_lang=unsupported
+ ;;
+ esac
+
+
# Disable a language that is unsupported by the target.
case "${add_this_lang}: $unsupported_languages " in
no:*) ;;
@@ -10022,6 +10971,15 @@ case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
;;
esac
+# Bootstrapping GCC requires libstdc++-v3 so error out if libstdc++ is disabled with bootstrapping
+# Note C++ is always enabled for stage1 now.
+case "$enable_bootstrap:${noconfigdirs}" in
+ yes:*target-libstdc++-v3*)
+ as_fn_error $? "bootstrapping with --disable-libstdcxx is not supported" "$LINENO" 5
+ ;;
+esac
+
+
extrasub_build=
for module in ${build_configdirs} ; do
if test -z "${no_recursion}" \
@@ -365,7 +365,7 @@ case "${ENABLE_GOLD}" in
# Check for target supported by gold.
case "${target}" in
i?86-*-* | x86_64-*-* | sparc*-*-* | powerpc*-*-* | arm*-*-* \
- | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-* | loongarch*-*-*)
+ | aarch64*-*-* | tilegx*-*-* | mips*-*-* | s390*-*-*)
configdirs="$configdirs gold"
if test x${ENABLE_GOLD} = xdefault; then
default_ld=gold
@@ -1432,6 +1432,7 @@ fi
ACX_PROG_GNAT
ACX_PROG_GDC
+ACX_PROG_CARGO
ACX_PROG_CMP_IGNORE_INITIAL
AC_ARG_ENABLE([bootstrap],
@@ -1477,16 +1478,16 @@ case "$have_compiler:$host:$target:$enable_bootstrap" in
;;
esac
-# When bootstrapping with GCC, build stage 1 in C++11 mode to ensure that a
-# C++11 compiler can still start the bootstrap. Otherwise, if building GCC,
-# require C++11 (or higher).
+# When bootstrapping with GCC, build stage 1 in C++14 mode to ensure that a
+# C++14 compiler can still start the bootstrap. Otherwise, if building GCC,
+# require C++14 (or higher).
if test "$enable_bootstrap:$GXX" = "yes:yes"; then
- CXX="$CXX -std=c++11"
+ CXX="$CXX -std=c++14"
elif test "$have_compiler" = yes; then
- AX_CXX_COMPILE_STDCXX(11)
+ AX_CXX_COMPILE_STDCXX(14)
if test "${build}" != "${host}"; then
- AX_CXX_COMPILE_STDCXX(11, [], [], [_FOR_BUILD])
+ AX_CXX_COMPILE_STDCXX(14, [], [], [_FOR_BUILD])
fi
fi
@@ -2057,6 +2058,64 @@ fi
AC_SUBST(PICFLAG)
+
+# Check for libdiagnostics support.
+AC_MSG_CHECKING([whether to enable libdiagnostics])
+AC_ARG_ENABLE(libdiagnostics,
+[AS_HELP_STRING([--enable-libdiagnostics],
+ [build libdiagnostics shared library])],
+enable_libdiagnostics=$enableval,
+enable_libdiagnostics=no)
+
+if test x$enable_libdiagnostics = xyes; then
+ # Disable libdiagnostics if -enable-host-shared not specified
+ # but not if building for Mingw. All code in Windows
+ # is position independent code (PIC).
+ case $target in
+ *mingw*) ;;
+ *)
+ if test x$host_shared != xyes; then
+ AC_MSG_ERROR([
+Enabling libdiagnostics requires --enable-host-shared.
+
+--enable-host-shared typically slows the rest of the compiler down by
+a few %, so you must explicitly enable it.
+
+If you want to build both libdiagnostics and the regular compiler, it is often
+best to do this via two separate configure/builds, in separate
+directories, to avoid imposing the performance cost of
+--enable-host-shared on the regular compiler.])
+ fi
+ ;;
+ esac
+fi
+AC_MSG_RESULT($enable_libdiagnostics)
+AC_SUBST(enable_libdiagnostics)
+
+
+# Rust requires -ldl and -lpthread if you are using an old glibc that does not include them by
+# default, so we check for them here
+# We are doing the test here and not in the gcc/configure to be able to nicely disable the
+# build of the Rust frontend in case a dep is missing.
+missing_rust_dynlibs=none
+
+save_LIBS="$LIBS"
+LIBS=
+AC_SEARCH_LIBS([dlopen], [dl])
+AC_SEARCH_LIBS([pthread_create], [pthread])
+CRAB1_LIBS="$LIBS"
+LIBS="$save_LIBS"
+
+if test "$ac_cv_search_dlopen" = no; then
+ missing_rust_dynlibs="libdl"
+fi
+
+if test "$ac_cv_search_pthread_create" = no; then
+ missing_rust_dynlibs="$missing_rust_dynlibs, libpthread"
+fi
+
+AC_SUBST(CRAB1_LIBS, "$CRAB1_LIBS")
+
# If we are building PIC/PIE host executables, and we are building dependent
# libs (e.g. GMP) in-tree those libs need to be configured to generate PIC
# code.
@@ -2133,7 +2192,7 @@ if test -d ${srcdir}/gcc; then
lang_requires_boot_languages=
# set srcdir during sourcing lang_frag to the gcc dir.
# Sadly overriding srcdir on the . line doesn't work in plain sh as it
- # polutes this shell
+ # pollutes this shell
saved_srcdir=${srcdir}
srcdir=${srcdir}/gcc . ${lang_frag}
srcdir=${saved_srcdir}
@@ -2294,6 +2353,25 @@ if test -d ${srcdir}/gcc; then
;;
esac
+ # Disable Rust if we are missing some required C libraries for the Rust runtime.
+ case ${add_this_lang}:${language}:${missing_rust_dynlibs} in
+ *:rust:none)
+ # Nothing to do - we're not missing any C libraries
+ ;;
+ yes:rust:*)
+ AC_MSG_ERROR([some C libraries are required to build $language: $missing_rust_dynlibs])
+ add_this_lang=unsupported
+ ;;
+ all:rust:*)
+ AC_MSG_WARN([some C libraries are required to build $language: $missing_rust_dynlibs])
+ add_this_lang=unsupported
+ ;;
+ *:rust:*)
+ # Silently disable.
+ add_this_lang=unsupported
+ ;;
+ esac
+
# Disable jit if -enable-host-shared not specified
# but not if building for Mingw. All code in Windows
# is position independent code (PIC).
@@ -2326,6 +2404,35 @@ directories, to avoid imposing the performance cost of
;;
esac
+ # Pre-conditions to consider whether cargo being supported.
+ if test x"$have_cargo" = xyes \
+ && test x"$build" != x"$host"; then
+ # Until <https://github.com/Rust-GCC/gccrs/issues/2898>
+ # "'cargo' should build for the host system" is resolved:
+ AC_MSG_WARN([use of cargo not yet supported here in Canadian cross configurations])
+ have_cargo=no
+ else
+ # Assume that cargo-produced object files are compatible with what
+ # we're going to build here.
+ :
+ fi
+ # Disable Rust if cargo is unavailable.
+ case ${add_this_lang}:${language}:${have_cargo} in
+ yes:rust:no)
+ # Specifically requested language; tell them.
+ AC_MSG_ERROR([cargo is required to build $language])
+ ;;
+ all:rust:no)
+ AC_MSG_WARN([cargo is required to build $language])
+ add_this_lang=unsupported
+ ;;
+ *:rust:no)
+ # Silently disable.
+ add_this_lang=unsupported
+ ;;
+ esac
+
+
# Disable a language that is unsupported by the target.
case "${add_this_lang}: $unsupported_languages " in
no:*) ;;
@@ -3141,6 +3248,15 @@ case "$enable_bootstrap:$ENABLE_GOLD: $configdirs :,$stage1_languages," in
;;
esac
+# Bootstrapping GCC requires libstdc++-v3 so error out if libstdc++ is disabled with bootstrapping
+# Note C++ is always enabled for stage1 now.
+case "$enable_bootstrap:${noconfigdirs}" in
+ yes:*target-libstdc++-v3*)
+ AC_MSG_ERROR([bootstrapping with --disable-libstdcxx is not supported])
+ ;;
+esac
+
+
extrasub_build=
for module in ${build_configdirs} ; do
if test -z "${no_recursion}" \