pmaports/cross/gcc-riscv64/0031-druntime-link-against-libucontext-on-all-platforms.patch

From 0b89a74fbf77ae6917f043c79cd03db0d6ef0212 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=B6ren=20Tempel?= <soeren+git@soeren-tempel.net>
Date: Sat, 16 Jul 2022 09:21:11 +0200
Subject: [PATCH 31/34] druntime: link against libucontext on all platforms

On musl-based Linux distributions, swapcontext etc. are not provided by
musl but instead by libucontext. Hence, we _always_ need to link against
an external library for these functions.
---
 libphobos/configure                | 8 --------
 libphobos/m4/druntime/libraries.m4 | 8 --------
 2 files changed, 16 deletions(-)

diff --git a/libphobos/configure b/libphobos/configure
index 925c53c5f5e..60c2a0c11c6 100755
--- a/libphobos/configure
+++ b/libphobos/configure
@@ -15216,14 +15216,6 @@ fi
   # Keep this in sync with core/thread.d, set druntime_fiber_asm_external to
   # "yes" for targets that have 'version = AsmExternal'.
   druntime_fiber_asm_external=no
-  case "$target_cpu" in
-    aarch64* | \
-    arm* | \
-    i[34567]86|x86_64 | \
-    powerpc)
-      druntime_fiber_asm_external=yes
-      ;;
-  esac
   if test "$druntime_fiber_asm_external" = no; then
     { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing swapcontext" >&5
 $as_echo_n "checking for library containing swapcontext... " >&6; }
diff --git a/libphobos/m4/druntime/libraries.m4 b/libphobos/m4/druntime/libraries.m4
index 45a56f6f76a..fef6e890b1e 100644
--- a/libphobos/m4/druntime/libraries.m4
+++ b/libphobos/m4/druntime/libraries.m4
@@ -220,14 +220,6 @@ AC_DEFUN([DRUNTIME_LIBRARIES_UCONTEXT],
   # Keep this in sync with core/thread.d, set druntime_fiber_asm_external to
   # "yes" for targets that have 'version = AsmExternal'.
   druntime_fiber_asm_external=no
-  case "$target_cpu" in
-    aarch64* | \
-    arm* | \
-    i[[34567]]86|x86_64 | \
-    powerpc)
-      druntime_fiber_asm_external=yes
-      ;;
-  esac
   if test "$druntime_fiber_asm_external" = no; then
     AC_SEARCH_LIBS([swapcontext], [c ucontext], [],
       AC_MSG_ERROR([swapcontext required but not found]))
-- 
2.41.0