1 files changed, 54 insertions, 0 deletions
diff --git a/main/gcc/212-gthr.patch b/main/gcc/212-gthr.patch
new file mode 100644
index 0000000000..d3b40276c1
--- /dev/null
+++ b/main/gcc/212-gthr.patch
@@ -0,0 +1,54 @@
+diff --git a/libgfortran/acinclude.m4 b/libgfortran/acinclude.m4
+index ba890f9..30b8b1a6 100644
+--- a/libgfortran/acinclude.m4
++++ b/libgfortran/acinclude.m4
+@@ -100,7 +100,7 @@ void foo (void);
+ 	      [Define to 1 if the target supports #pragma weak])
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
++    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+       AC_DEFINE(GTHREAD_USE_WEAK, 0,
+ 		[Define to 0 if the target shouldn't use #pragma weak])
+       ;;
+diff --git a/libgfortran/configure b/libgfortran/configure
+index e1592f7..07542e1 100755
+--- a/libgfortran/configure
++++ b/libgfortran/configure
+@@ -26447,7 +26447,7 @@ $as_echo "#define SUPPORTS_WEAK 1" >>confdefs.h
+ 
+   fi
+   case "$host" in
+-    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
++    *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
+ 
+ $as_echo "#define GTHREAD_USE_WEAK 0" >>confdefs.h
+ 
+diff --git a/libstdc++-v3/config/os/generic/os_defines.h b/libstdc++-v3/config/os/generic/os_defines.h
+index 45bf52a..103ec0e 100644
+--- a/libstdc++-v3/config/os/generic/os_defines.h
++++ b/libstdc++-v3/config/os/generic/os_defines.h
+@@ -33,4 +33,9 @@
+ // System-specific #define, typedefs, corrections, etc, go here.  This
+ // file will come before all others.
+ 
++// Disable the weak reference logic in gthr.h for os/generic because it
++// is broken on every platform unless there is implementation specific
++// workaround in gthr-posix.h and at link-time for static linking.
++#define _GLIBCXX_GTHREAD_USE_WEAK 0
++
+ #endif
+diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
+index 82ddc52..a349ce3 100644
+--- a/libstdc++-v3/configure.host
++++ b/libstdc++-v3/configure.host
+@@ -271,6 +271,9 @@ case "${host_os}" in
+   freebsd*)
+     os_include_dir="os/bsd/freebsd"
+     ;;
++  linux-musl*)
++    os_include_dir="os/generic"
++    ;;
+   gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+     if [ "$uclibc" = "yes" ]; then
+       os_include_dir="os/uclibc"