erlang · garazdawi · Jan 21, 2022 · Nov 29, 2021 · Nov 29, 2021
diff --git a/HOWTO/INSTALL.md b/HOWTO/INSTALL.md
@@ -422,6 +422,8 @@ Some of the available `configure` options are:
     and scalability compared to the default clock sources chosen.
 *   `--disable-saved-compile-time` - Disable saving of compile date and time
     in the emulator binary.
+*   `--enable-ei-dynamic-lib` - Make erl\_interface build a shared library in addition
+    to the archive normally built.
 
 If you or your system has special requirements please read the `Makefile` for
 additional configuration information.

diff --git a/erts/aclocal.m4 b/erts/aclocal.m4
@@ -42,7 +42,7 @@ AC_ARG_VAR(CPPFLAGS, [C/C++ preprocessor flags])
 AC_ARG_VAR(CXX, [C++ compiler])
 AC_ARG_VAR(CXXFLAGS, [C++ compiler flags])
 AC_ARG_VAR(LD, [linker (is often overridden by configure)])
-AC_ARG_VAR(LDFLAGS, [linker flags (can be risky to set since LD may be overriden by configure)])
+AC_ARG_VAR(LDFLAGS, [linker flags (can be risky to set since LD may be overridden by configure)])
 AC_ARG_VAR(LIBS, [libraries])
 AC_ARG_VAR(DED_LD, [linker for Dynamic Erlang Drivers (set all DED_LD* variables or none)])
 AC_ARG_VAR(DED_LDFLAGS, [linker flags for Dynamic Erlang Drivers (set all DED_LD* variables or none)])
@@ -2957,11 +2957,26 @@ dnl
 AC_DEFUN(ERL_DED,
 	[
 
+LM_CHECK_THR_LIB
+
+if test "$THR_DEFS" = ""; then
+    DED_THR_DEFS="-D_THREAD_SAFE -D_REENTRANT"
+else
+    DED_THR_DEFS="$THR_DEFS"
+fi
+
+AC_SUBST(DED_THR_DEFS)
+
+ERL_DED_FLAGS
+
+])
+
+AC_DEFUN(ERL_DED_FLAGS,
+         [
+
 USER_LD=$LD
 USER_LDFLAGS="$LDFLAGS"
 
-LM_CHECK_THR_LIB
-
 DED_CC=$CC
 DED_GCC=$GCC
 
@@ -2977,7 +2992,6 @@ case $host_os in
         ;;
 esac
 
-
 DED_WARN_FLAGS="-Wall -Wstrict-prototypes"
 case "$host_cpu" in
   tile*)
@@ -2997,12 +3011,6 @@ LM_TRY_ENABLE_CFLAG([-Werror=undef], [DED_WERRORFLAGS])
 DED_SYS_INCLUDE="-I${ERL_TOP}/erts/emulator/beam -I${ERL_TOP}/erts/include -I${ERL_TOP}/erts/include/$host -I${ERL_TOP}/erts/include/internal -I${ERL_TOP}/erts/include/internal/$host -I${ERL_TOP}/erts/emulator/sys/$DED_OSTYPE -I${ERL_TOP}/erts/emulator/sys/common"
 DED_INCLUDE=$DED_SYS_INCLUDE
 
-if test "$THR_DEFS" = ""; then
-    DED_THR_DEFS="-D_THREAD_SAFE -D_REENTRANT"
-else
-    DED_THR_DEFS="$THR_DEFS"
-fi
-# DED_EMU_THR_DEFS=$EMU_THR_DEFS
 DED_CFLAGS="$CFLAGS $CPPFLAGS $DED_CFLAGS"
 if test "x$GCC" = xyes; then
     # Use -fno-common for gcc, that is link error if multiple definitions of
@@ -3075,9 +3083,18 @@ case $host_os in
 		DED_LDFLAGS="-Bshareable"
 	;;
 	darwin*)
-		# Mach-O linker: a shared lib and a loadable
-		# object file is not the same thing.
-		DED_LDFLAGS="-bundle -bundle_loader ${ERL_TOP}/bin/$host/beam.smp"
+		# Mach-O linker: a shared lib and a loadable object file is not the same thing.
+
+                if test "X${ERL_DED_FLAT_BUNDLE}" = "Xtrue"; then
+                  # EI sets this variable when building its .so file as beam.smp
+                  # has not been built yet and any ei lib will not
+                  # link to beam.smp anyways
+		  DED_LDFLAGS="-bundle -flat_namespace -undefined suppress"
+                else
+                  # Cannot use flat namespaces for drivers/nifs as that may cause
+                  # symbols to collide during loading
+		  DED_LDFLAGS="-bundle -bundle_loader ${ERL_TOP}/bin/$host/beam.smp"
+                fi
 		# DED_LDFLAGS_CONFTEST is for use in configure tests only. We
 		# cannot use DED_LDFLAGS in configure tests since beam.smp has not
 		# been built yet...
@@ -3187,7 +3204,6 @@ AC_SUBST(DED_LD)
 AC_SUBST(DED_LDFLAGS)
 AC_SUBST(DED_LD_FLAG_RUNTIME_LIBRARY_PATH)
 AC_SUBST(DED_LIBS)
-AC_SUBST(DED_THR_DEFS)
 AC_SUBST(DED_OSTYPE)
 
 ])
diff --git a/erts/configure b/erts/configure
@@ -1652,7 +1652,7 @@ Some influential environment variables:
   CXX         C++ compiler
   CXXFLAGS    C++ compiler flags
   LD          linker (is often overridden by configure)
-  LDFLAGS     linker flags (can be risky to set since LD may be overriden by
+  LDFLAGS     linker flags (can be risky to set since LD may be overridden by
               configure)
   LIBS        libraries
   DED_LD      linker for Dynamic Erlang Drivers (set all DED_LD* variables or

diff --git a/lib/crypto/configure b/lib/crypto/configure
@@ -633,7 +633,6 @@ SSL_LIBDIR
 SSL_INCDIR
 SSL_INCLUDE
 DED_OSTYPE
-DED_THR_DEFS
 DED_LIBS
 DED_WERRORFLAGS
 DED_WARN_FLAGS
@@ -645,6 +644,7 @@ DED_SYS_INCLUDE
 DED_EXT
 DED_GCC
 DED_CC
+DED_THR_DEFS
 EGREP
 GREP
 MIXED_MINGW
@@ -3974,9 +3974,6 @@ done
 
 
 
-USER_LD=$LD
-USER_LDFLAGS="$LDFLAGS"
-
 
 
 NEED_NPTL_PTHREAD_H=no
@@ -4427,6 +4424,19 @@ fi
 
 
 
+if test "$THR_DEFS" = ""; then
+    DED_THR_DEFS="-D_THREAD_SAFE -D_REENTRANT"
+else
+    DED_THR_DEFS="$THR_DEFS"
+fi
+
+
+
+
+
+USER_LD=$LD
+USER_LDFLAGS="$LDFLAGS"
+
 DED_CC=$CC
 DED_GCC=$GCC
 
@@ -4442,7 +4452,6 @@ case $host_os in
         ;;
 esac
 
-
 DED_WARN_FLAGS="-Wall -Wstrict-prototypes"
 case "$host_cpu" in
   tile*)
@@ -4586,12 +4595,6 @@ $as_echo "no" >&6; }
 DED_SYS_INCLUDE="-I${ERL_TOP}/erts/emulator/beam -I${ERL_TOP}/erts/include -I${ERL_TOP}/erts/include/$host -I${ERL_TOP}/erts/include/internal -I${ERL_TOP}/erts/include/internal/$host -I${ERL_TOP}/erts/emulator/sys/$DED_OSTYPE -I${ERL_TOP}/erts/emulator/sys/common"
 DED_INCLUDE=$DED_SYS_INCLUDE
 
-if test "$THR_DEFS" = ""; then
-    DED_THR_DEFS="-D_THREAD_SAFE -D_REENTRANT"
-else
-    DED_THR_DEFS="$THR_DEFS"
-fi
-# DED_EMU_THR_DEFS=$EMU_THR_DEFS
 DED_CFLAGS="$CFLAGS $CPPFLAGS $DED_CFLAGS"
 if test "x$GCC" = xyes; then
     # Use -fno-common for gcc, that is link error if multiple definitions of
@@ -4947,6 +4950,7 @@ fi
 
 
 
+
 
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for multiarch directory" >&5
 $as_echo_n "checking for multiarch directory... " >&6; }