1 Prevent:

     2 error: #error "Compiler or options invalid for pre-UNIX 03 X/Open applications  and pre-2001 POSIX applications

     3 

     4 diff --git a/configure b/configure

     5 --- a/configure

     6 +++ b/configure

     7 @@ -9759,6 +9759,8 @@

     8  cross_compiling=$ac_cv_prog_cc_cross

     9  

    10      else

    11 +       CFLAGS="$CFLAGS -D_XPG6 -D__EXTENSIONS__"

    12 +       CXXFLAGS="$CXXFLAGS -D_XPG6 -D__EXTENSIONS__"

    13         LDFLAGS="$LDFLAGS -Wl,-z,ignore -Wl,-R,'\$\$ORIGIN:\$\$ORIGIN/..' -Wl,-z,lazyload -Wl,-z,combreloc -Wl,-z,muldefs"

    14         LIBS="-lc $LIBS"

    15         MKSHLIB_FORCE_ALL='-Wl,-z -Wl,allextract'