On musl, linking against libphobos fails because it requires ucontext
but is not explicitly linked against it. This is caused by configure
assuming that it is implemented in assembly, but it is actually not
implemented. This silently works on other libcs because context API does
not require an external library.
---
libphobos/m4/druntime/libraries.m4 | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/libphobos/m4/druntime/libraries.m4
b/libphobos/m4/druntime/libraries.m4
index 45a56f6f76a..e11582e433a 100644
--- a/libphobos/m4/druntime/libraries.m4
+++ b/libphobos/m4/druntime/libraries.m4
@@ -223,10 +223,14 @@ AC_DEFUN([DRUNTIME_LIBRARIES_UCONTEXT],
case "$target_cpu" in
aarch64* | \
arm* | \
- i[[34567]]86|x86_64 | \
powerpc)
druntime_fiber_asm_external=yes
;;
+ i[[34567]]86|x86_64)
+ if test "$enable_cet" = no; then
+ druntime_fiber_asm_external=yes
+ fi
+ ;;
esac
if test "$druntime_fiber_asm_external" = no; then
AC_SEARCH_LIBS([swapcontext], [c ucontext], [],
--
2.34.1
