The patch resolves compilation issues for the C++ language. Previous
patch series contributed to C++ as well, however, C++ could not be
tested until we got a C++ compiler and could build at least a "Hello
World" C++ program, and in reality, more than that.
gcc/ChangeLog:
* config.gcc: Add missing dependencies.
libstdc++-v3/ChangeLog:
* src/c++17/fast_float/fast_float.h (defined): Adjust a condition
for AArch64.
---
gcc/config.gcc | 1 +
libstdc++-v3/src/c++17/fast_float/fast_float.h | 3 ++-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/gcc/config.gcc b/gcc/config.gcc
index a36dd1bcbc6..e1117c273f0 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -1283,6 +1283,7 @@ aarch64-*-mingw*)
extra_options="${extra_options} mingw/cygming.opt mingw/mingw.opt"
extra_objs="${extra_objs} winnt.o winnt-dll.o"
c_target_objs="${c_target_objs} msformat-c.o"
+ cxx_target_objs="${cxx_target_objs} msformat-c.o"
d_target_objs="${d_target_objs} winnt-d.o"
tmake_file="${tmake_file} mingw/t-cygming"
case ${enable_threads} in
diff --git a/libstdc++-v3/src/c++17/fast_float/fast_float.h
b/libstdc++-v3/src/c++17/fast_float/fast_float.h
index 7551c4f89ef..dc61de7b199 100644
--- a/libstdc++-v3/src/c++17/fast_float/fast_float.h
+++ b/libstdc++-v3/src/c++17/fast_float/fast_float.h
@@ -275,7 +275,8 @@ fastfloat_really_inline value128
full_multiplication(uint64_t a,
// But MinGW on ARM64 doesn't have native support for 64-bit multiplications
answer.high = __umulh(a, b);
answer.low = a * b;
-#elif defined(FASTFLOAT_32BIT) || (defined(_WIN64) && !defined(__clang__))
+#elif defined (FASTFLOAT_32BIT) || (defined (_WIN64) && !defined (__clang__) \
+ && !defined (_M_ARM64))
answer.low = _umul128(a, b, &answer.high); // _umul128 not available on ARM64
#elif defined(FASTFLOAT_64BIT)
__uint128_t r = ((__uint128_t)a) * b;
--
2.34.1
