Use escript to launch ex_doc for nix to work

Author: garazdawi

erts/configure

@@ -26902,6 +26902,9 @@ ac_config_files="$ac_config_files emulator/$host/Makefile:emulator/Makefile.in e
 ac_config_files="$ac_config_files ../make/make_emakefile:../make/make_emakefile.in"
 
 
+ac_config_files="$ac_config_files ../make/ex_doc_wrapper:../make/ex_doc_wrapper.in"
+
+
 ac_config_files="$ac_config_files ../lib/os_mon/c_src/$host/Makefile:../lib/os_mon/c_src/Makefile.in ../lib/runtime_tools/c_src/$host/Makefile:../lib/runtime_tools/c_src/Makefile.in"
 
 
@@ -27615,6 +27618,7 @@ do
     "lib_src/$host/Makefile") CONFIG_FILES="$CONFIG_FILES lib_src/$host/Makefile:lib_src/Makefile.in" ;;
     "../make/$host/otp.mk") CONFIG_FILES="$CONFIG_FILES ../make/$host/otp.mk:../make/otp.mk.in" ;;
     "../make/make_emakefile") CONFIG_FILES="$CONFIG_FILES ../make/make_emakefile:../make/make_emakefile.in" ;;
+    "../make/ex_doc_wrapper") CONFIG_FILES="$CONFIG_FILES ../make/ex_doc_wrapper:../make/ex_doc_wrapper.in" ;;
     "../lib/os_mon/c_src/$host/Makefile") CONFIG_FILES="$CONFIG_FILES ../lib/os_mon/c_src/$host/Makefile:../lib/os_mon/c_src/Makefile.in" ;;
     "../lib/runtime_tools/c_src/$host/Makefile") CONFIG_FILES="$CONFIG_FILES ../lib/runtime_tools/c_src/$host/Makefile:../lib/runtime_tools/c_src/Makefile.in" ;;
     "../make/install_dir_data.sh") CONFIG_FILES="$CONFIG_FILES ../make/install_dir_data.sh:../make/install_dir_data.sh.in" ;;
@@ -28171,6 +28175,7 @@ printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}
 
   case $ac_file$ac_mode in
     "../make/make_emakefile":F) chmod +x ../make/make_emakefile ;;
+    "../make/ex_doc_wrapper":F) chmod +x ../make/ex_doc_wrapper ;;
     "../make/install_dir_data.sh":F) chmod +x ../make/install_dir_data.sh ;;
 
   esac

erts/configure.ac

@@ -3676,6 +3676,9 @@ AC_CONFIG_FILES([
 AC_CONFIG_FILES([../make/make_emakefile:../make/make_emakefile.in],
                 [chmod +x ../make/make_emakefile])
 
+AC_CONFIG_FILES([../make/ex_doc_wrapper:../make/ex_doc_wrapper.in],
+                [chmod +x ../make/ex_doc_wrapper])
+
 dnl
 dnl The ones below should be moved to their respective lib
 dnl

make/ex_doc_wrapper renamed to make/ex_doc_wrapper.in

@@ -32,7 +32,7 @@ exec 3>&1 4>&2
 
 ## Running the command where we redirect stderr to fd 1 and stdout to fd 3.
 ## We then use tee on the stderr (which is now fd 1) to print that to fd 4
-OUTPUT="$( { "${EX_DOC}" "${ARGS[@]}"; } 2>&1 1>&3 | tee /dev/fd/4 )"
+OUTPUT="$( { escript@EXEEXT@ "${EX_DOC}" "${ARGS[@]}"; } 2>&1 1>&3 | tee /dev/fd/4 )"
 
 ## Close fd 3 and 4
 exec 3>&- 4>&-