- update for cross compile. Fixes bug 193902

(Portage version: 2.1.6.7/cvs/Linux x86_64)

1 files changed, 598 insertions, 0 deletions

diff --git a/app-misc/screen/files/screen-4.0.3-crosscompile.patch b/app-misc/screen/files/screen-4.0.3-crosscompile.patch
new file mode 100644
index 000000000000..17026ad4af3b
--- /dev/null
+++ b/app-misc/screen/files/screen-4.0.3-crosscompile.patch
@@ -0,0 +1,598 @@
+--- configure.in~	2008-11-23 17:43:48.000000000 +0000
++++ configure.in	2008-11-23 17:43:48.000000000 +0000
+@@ -46,6 +46,7 @@
+ AC_PROG_GCC_TRADITIONAL
+ AC_ISC_POSIX
+ 
++AC_MSG_CHECKING([for compiler sanity])
+ AC_TRY_RUN(main(){exit(0);},,[
+ if test $CC != cc ; then
+ AC_NOTE(Your $CC failed - restarting with CC=cc)
+@@ -54,22 +55,17 @@
+ export CC
+ exec $0 $configure_args
+ fi
+-])
+-
+-AC_TRY_RUN(main(){exit(0);},,
+-exec 5>&2
+-eval $ac_link
+-AC_NOTE(CC=$CC; CFLAGS=$CFLAGS; LIBS=$LIBS;)
+-AC_NOTE($ac_compile)
+-AC_MSG_ERROR(Can't run the compiler - sorry))
++],AC_MSG_WARN([skipping test due to crosscompilation]))
+ 
++AC_MSG_CHECKING([if compiler sets exit status])
+ AC_TRY_RUN([
+ main()
+ {
+   int __something_strange_();
+   __something_strange_(0);
+ }
+-],AC_MSG_ERROR(Your compiler does not set the exit status - sorry))
++],AC_MSG_ERROR(Your compiler does not set the exit status - sorry),,
++AC_MSG_WARN(skipping test due to crosscompilation))
+ 
+ AC_PROG_AWK
+ 
+@@ -103,6 +99,7 @@
+ dnl
+ dnl    ****  special unix variants  ****
+ dnl
++AH_TEMPLATE(ISC,[])
+ if test -n "$ISC"; then
+   AC_DEFINE(ISC) LIBS="$LIBS -linet"
+ fi
+@@ -114,11 +111,13 @@
+ dnl fi
+ dnl fi
+ 
++AH_TEMPLATE([sysV68],[])
+ if test -f /sysV68 ; then
+ AC_DEFINE(sysV68)
+ fi
+ 
+ AC_CHECKING(for MIPS)
++AH_TEMPLATE([MIPS],[])
+ if test -f /lib/libmld.a || test -f /usr/lib/libmld.a || test -f /usr/lib/cmplrs/cc/libmld.a; then
+ oldlibs="$LIBS"
+ test -f /bin/mx || LIBS="$LIBS -lmld" # for nlist. But not on alpha.
+@@ -132,6 +131,8 @@
+ AC_CHECKING(wait3)
+ AC_TRY_LINK(,[wait3();], ,
+ AC_CHECKING(wait2)
++AH_TEMPLATE([USE_WAIT2],[On RISCOS we prefer wait2() over wait3(). rouilj@sni-usa.com])
++dnl TODO(Hannes) shipped config.h.in wraps the define in #ifdef BSDWAIT
+ AC_TRY_LINK(,[wait2();],
+ dnl John Rouillard (rouilj@sni-usa.com):
+ dnl need -I/usr/include/bsd in RISCOS otherwise sockets are broken, no
+@@ -154,9 +155,11 @@
+ oldlibs="$LIBS"
+ LIBS="$LIBS -lpyr"
+ AC_CHECKING(Pyramid OSX)
++AH_TEMPLATE([OSX], [Pyramid OSX])
+ AC_TRY_LINK(,[open_controlling_pty("")], AC_DEFINE(OSX), LIBS="$oldlibs")
+ fi
+ 
++AH_TEMPLATE([POSIX],[Define POSIX if your system supports IEEE Std 1003.1-1988 (POSIX).])
+ dnl ghazi@caip.rutgers.edu (Kaveh R. Ghazi):
+ dnl BBN butterfly is not POSIX, but a MACH BSD system.
+ dnl Do not define POSIX and TERMIO.
+@@ -183,6 +186,7 @@
+ fi
+ 
+ AC_CHECKING(for System V)
++AH_TEMPLATE([SYSV], [Define SYSV if your machine is SYSV complient (Sys V, HPUX, A/UX)])
+ AC_TRY_COMPILE(
+ [#include <sys/types.h>
+ #include <signal.h>
+@@ -226,6 +230,9 @@
+ dnl
+ 
+ AC_CHECKING(BSD job jontrol)
++AH_TEMPLATE([BSDJOBS],
++[Define BSDJOBS if you have BSD-style job control (both process
++ groups and a tty that deals correctly with them)])
+ AC_TRY_LINK(
+ [#include <sys/types.h>
+ #include <sys/ioctl.h>
+@@ -246,6 +253,10 @@
+ dnl    ****  setreuid(), seteuid()  ****
+ dnl
+ AC_CHECKING(setreuid)
++AH_TEMPLATE([HAVE_SETREUID],
++[If your system has the calls setreuid() and setregid(),
++ define HAVE_SETREUID. Otherwise screen will use a forked process to
++ safely create output files without retaining any special privileges.])
+ AC_TRY_LINK(,[
+ #ifdef __hpux
+ setresuid(0, 0, 0);
+@@ -260,6 +271,9 @@
+ dnl   Solaris seteuid doesn't change the saved uid, bad for
+ dnl     multiuser screen sessions
+ AC_CHECKING(seteuid)
++AH_TEMPLATE([HAVE_SETEUID],
++[If your system supports BSD4.4's seteuid() and setegid(), define
++ HAVE_SETEUID.])
+ AC_TRY_LINK(,[
+ #if defined(linux) || defined(NeXT) || defined(_AUX_SOURCE) || defined(AUX) || defined(ultrix) || (defined(sun) && defined(SVR4)) || defined(ISC) || defined(sony_news)
+ seteuid_is_broken(0);
+@@ -284,6 +298,8 @@
+ dnl
+ 
+ AC_CHECKING(fifos)
++AC_CACHE_CHECK([usable fifos],
++               [screen_cv_sys_fifo_usable],
+ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <sys/stat.h>
+@@ -348,12 +364,14 @@
+     exit(1);
+   exit(0);
+ }
+-], AC_NOTE(- your fifos are usable) fifo=1,
+-AC_NOTE(- your fifos are not usable))
+-rm -f /tmp/conftest*
++], screen_cv_sys_fifo_usable=yes, screen_cv_sys_fifo_usable=no))
+ 
+-if test -n "$fifo"; then
+-AC_CHECKING(for broken fifo implementation)
++if test X"$screen_cv_sys_fifo_usable" = Xyes; then
++AH_TEMPLATE([BROKEN_PIPE],
++[Define this if your system exits select() immediatly if a pipe is
++ opened read-only and no writer has opened it.])
++AC_CACHE_CHECK([broken fifo implementation],
++              [screen_cv_sys_fifo_broken_impl],
+ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <fcntl.h>
+@@ -398,9 +416,11 @@
+     exit(1);
+   exit(0);
+ }
+-], AC_NOTE(- your implementation is ok), 
+-AC_NOTE(- you have a broken implementation) AC_DEFINE(BROKEN_PIPE) fifobr=1)
+-rm -f /tmp/conftest*
++], screen_cv_sys_fifo_broken_impl=no,
++screen_cv_sys_fifo_broken_impl=yes))
++if test X"$screen_cv_sys_fifo_broken_impl" = Xyes; then
++       AC_DEFINE(BROKEN_PIPE)
++fi
+ fi
+ 
+ dnl
+@@ -410,6 +430,8 @@
+ dnl
+ 
+ AC_CHECKING(sockets)
++AC_CACHE_CHECK([sockets are usable],
++              [screen_cv_sys_sockets_usable],
+ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <sys/socket.h>
+@@ -460,12 +482,16 @@
+     exit(1);
+   exit(0);
+ }
+-], AC_NOTE(- your sockets are usable) sock=1,
+-AC_NOTE(- your sockets are not usable))
+-rm -f /tmp/conftest*
++], screen_cv_sys_sockets_usable=yes,
++screen_cv_sys_sockets_usable=no))
+ 
+-if test -n "$sock"; then
++if test X"$screen_cv_sys_sockets_usable" = Xyes; then
+ AC_CHECKING(socket implementation)
++AH_TEMPLATE([SOCK_NOT_IN_FS],
++[Define this if the unix-domain socket implementation doesn't
++ create a socket in the filesystem.])
++AC_CACHE_CHECK([if sockets are not stored in the filesystem],
++              [screen_cv_sys_sockets_nofs],
+ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <sys/stat.h>
+@@ -491,22 +517,25 @@
+   close(s);
+   exit(0);
+ }
+-],AC_NOTE(- you are normal),
+-AC_NOTE(- unix domain sockets are not kept in the filesystem)
+-AC_DEFINE(SOCK_NOT_IN_FS) socknofs=1)
+-rm -f /tmp/conftest*
++], screen_cv_sys_sockets_nofs=no,
++screen_cv_sys_sockets_nofs=yes))
++
++if test X"$screen_cv_sys_sockets_nofs" = Xyes; then
++  AC_DEFINE(SOCK_NOT_IN_FS)
++fi
+ fi
+ 
+ 
+ dnl
+ dnl    ****  choose sockets or fifos  ****
+ dnl
+-if test -n "$fifo"; then
+-  if test -n "$sock"; then
+-    if test -n "$nore"; then
++AH_TEMPLATE([NAMEDPIPE], [Define this if your system supports named pipes.])
++if test X"$screen_cv_sys_fifo_usable" = Xyes; then
++  if test X"$screen_cv_sys_sockets_usable" = Xyes; then
++    if test X"$screen_cv_sys_sockets_nofs" = Xyes; then
+       AC_NOTE(- hmmm... better take the fifos)
+       AC_DEFINE(NAMEDPIPE)
+-    elif test -n "$fifobr"; then
++    elif test X"$screen_cv_sys_fifo_broken_impl" = Xyes; then
+       AC_NOTE(- as your fifos are broken lets use the sockets.)
+     else
+       AC_NOTE(- both sockets and fifos usable. let's take fifos.)
+@@ -516,7 +545,7 @@
+     AC_NOTE(- using named pipes, of course)
+     AC_DEFINE(NAMEDPIPE)
+   fi
+-elif test -n "$sock"; then
++elif test X"$screen_cv_sys_sockets_usable" = Xyes; then
+   AC_NOTE(- using unix-domain sockets, of course)
+ else
+   AC_MSG_ERROR(you have neither usable sockets nor usable pipes -> no screen)
+@@ -526,7 +555,11 @@
+ dnl    ****  check the select implementation ****
+ dnl
+ 
+-AC_CHECKING(select return value)
++AH_TEMPLATE([SELECT_BROKEN],
++[If the select return value doesn't treat a descriptor that is
++ usable for reading and writing as two hits, define SELECT_BROKEN.])
++AC_CACHE_CHECK([for broken select return value],
++              [screen_cv_sys_select_broken_retval],
+ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <sys/stat.h>
+@@ -625,17 +658,26 @@
+     exit(1);
+   exit(0);
+ }
+-],AC_NOTE(- select is ok),
+-AC_NOTE(- select can't count) AC_DEFINE(SELECT_BROKEN))
++], screen_cv_sys_select_broken_retval=no,
++screen_cv_sys_select_broken_retval=yes))
++if test X"$screen_cv_sys_select_broken_retval" = Xyes; then
++  AC_DEFINE(SELECT_BROKEN)
++fi
+ 
+ dnl
+ dnl    ****  termcap or terminfo  ****
+ dnl
++AH_TEMPLATE([TERMINFO],
++[Define TERMINFO if your machine emulates the termcap routines
++ with the terminfo database.
++ Thus the .screenrc file is parsed for
++ the command 'terminfo' and not 'termcap'])
++
+ AC_CHECKING(for tgetent)
+ AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
+ olibs="$LIBS"
+-LIBS="-lcurses $olibs"
+ AC_CHECKING(libcurses)
++AC_CHECK_LIB(ncursesw,tgetent)
+ AC_TRY_LINK(,[
+ #ifdef __hpux
+ __sorry_hpux_libcurses_is_totally_broken_in_10_10();
+@@ -654,24 +696,39 @@
+ AC_TRY_LINK(,tgetent((char *)0, (char *)0);,,
+ AC_MSG_ERROR(!!! no tgetent - no screen))))))
+ 
+-AC_TRY_RUN([
++AC_CACHE_CHECK([using terminfo database],[screen_cv_sys_terminfo_used],
++       AC_TRY_RUN([
+ main()
+ {
+  exit(strcmp(tgoto("%p1%d", 0, 1), "1") ? 0 : 1);
+-}], AC_NOTE(- you use the termcap database),
+-AC_NOTE(- you use the terminfo database) AC_DEFINE(TERMINFO))
++}
++       ], screen_cv_sys_terminfo_used=no,
++       screen_cv_sys_terminfo_used=yes)
++)
++
++if test X"$screen_cv_sys_terminfo_used" = Xyes; then
++       AC_DEFINE(TERMINFO)
++fi
++
+ AC_CHECKING(ospeed)
++AH_TEMPLATE([NEED_OSPEED],[If your library does not define ospeed, define this.])
+ AC_TRY_LINK(extern short ospeed;,ospeed=5;,,AC_DEFINE(NEED_OSPEED))
+ 
+ dnl
+ dnl    ****  PTY specific things  ****
+ dnl
++AH_TEMPLATE([HAVE_DEV_PTC],
++[define HAVE_DEV_PTC if you have a /dev/ptc character special
++ device.])
+ AC_CHECKING(for /dev/ptc)
+ if test -r /dev/ptc; then
+ AC_DEFINE(HAVE_DEV_PTC)
+ fi
+ 
+ AC_CHECKING(for SVR4 ptys)
++AH_TEMPLATE([HAVE_SVR4_PTYS],
++[define HAVE_SVR4_PTYS if you have a /dev/ptmx character special
++ device and support the ptsname(), grantpt(), unlockpt() functions.])
+ sysvr4ptys=
+ if test -c /dev/ptmx ; then
+ AC_TRY_LINK([],[ptsname(0);grantpt(0);unlockpt(0);],[AC_DEFINE(HAVE_SVR4_PTYS)
+@@ -687,6 +744,13 @@
+ fi
+ 
+ AC_CHECKING(for ptyranges)
++AH_TEMPLATE([PTYRANGE0],
++[define PTYRANGE0 and or PTYRANGE1 if you want to adapt screen
++ to unusual environments. E.g. For SunOs the defaults are "qpr" and
++ "0123456789abcdef". For SunOs 4.1.2
++ #define PTYRANGE0 "pqrstuvwxyzPQRST"
++ is recommended by Dan Jacobson.])
++AH_TEMPLATE([PTYRANGE1],[])
+ if test -d /dev/ptym ; then
+ pdir='/dev/ptym'
+ else
+@@ -850,20 +914,39 @@
+ dnl
+ dnl    ****  loadav  ****
+ dnl
++
++AH_TEMPLATE([LOADAV],
++[If you want the "time" command to display the current load average
++ define LOADAV. Maybe you must install screen with the needed
++ privileges to read /dev/kmem.
++ Note that NLIST_ stuff is only checked, when getloadavg() is not available.
++])
++AH_TEMPLATE([LOADAV_NUM])
++AH_TEMPLATE([LOADAV_TYPE])
++AH_TEMPLATE([LOADAV_SCALE])
++AH_TEMPLATE([LOADAV_GETLOADAVG])
++AH_TEMPLATE([LOADAV_UNIX])
++AH_TEMPLATE([LOADAV_AVENRUN])
++AH_TEMPLATE([LOADAV_USE_NLIST64])
++
++AH_TEMPLATE([NLIST_DECLARED])
++AH_TEMPLATE([NLIST_STRUCT])
++AH_TEMPLATE([NLIST_NAME_UNION])
++
+ AC_CHECKING(for libutil(s))
+-test -f /usr/lib/libutils.a && LIBS="$LIBS -lutils"
+-test -f /usr/lib/libutil.a && LIBS="$LIBS -lutil"
++dnl I have no idea whether "login" is an appropriate symbol to check for here - Hannes
++AC_CHECK_LIB(utils,login)
++AC_CHECK_LIB(util,login)
+ 
+ AC_CHECKING(getloadavg)
+ AC_TRY_LINK(,[getloadavg((double *)0, 0);],
+ AC_DEFINE(LOADAV_GETLOADAVG) load=1,
+-if test -f /usr/lib/libkvm.a ; then
+ olibs="$LIBS"
+-LIBS="$LIBS -lkvm"
++AC_CHECK_LIB(kvm,kvm_open,
+ AC_CHECKING(getloadavg with -lkvm)
+ AC_TRY_LINK(,[getloadavg((double *)0, 0);],
+ AC_DEFINE(LOADAV_GETLOADAVG) load=1, LIBS="$olibs")
+-fi
++)
+ )
+ 
+ if test -z "$load" ; then
+@@ -1005,6 +1088,11 @@
+ dnl
+ dnl    ****  signal handling  ****
+ dnl
++
++AH_TEMPLATE([SIGVOID],
++[Define SIGVOID if your signal handlers return void.  On older
++ systems, signal returns int, but on newer ones, it returns void.])
++
+ if test -n "$posix" ; then
+ 
+ dnl POSIX has reliable signals with void return type.
+@@ -1014,6 +1102,7 @@
+ else
+ 
+ AC_CHECKING(return type of signal handlers)
++AH_TEMPLATE([USESIGSET], [Define USESIGSET if you have sigset for BSD 4.1 reliable signals.])
+ AC_TRY_COMPILE(
+ [#include <sys/types.h>
+ #include <signal.h>
+@@ -1033,6 +1122,9 @@
+ #endif
+ ], AC_DEFINE(USESIGSET))
+ AC_CHECKING(signal implementation)
++AH_TEMPLATE([SYSVSIGS],
++[Define SYSVSIGS if signal handlers must be reinstalled after
++ they have been called.])
+ AC_TRY_RUN([
+ #include <sys/types.h>
+ #include <signal.h>
+@@ -1075,13 +1167,14 @@
+ dnl
+ 
+ AC_CHECKING(for crypt and sec libraries)
+-test -f /lib/libcrypt_d.a || test -f /usr/lib/libcrypt_d.a && LIBS="$LIBS -lcrypt_d"
++dnl I have no idea whether "crypt" is an appropriate symbol to check for here - Hannes
++AC_CHECK_LIB(crypt_d,crypt)
+ oldlibs="$LIBS"
+-LIBS="$LIBS -lcrypt"
+ AC_CHECKING(crypt)
+ AC_TRY_LINK(,,,LIBS="$oldlibs")
+-test -f /lib/libsec.a || test -f /usr/lib/libsec.a && LIBS="$LIBS -lsec"
+-test -f /lib/libshadow.a || test -f /usr/lib/libshadow.a && LIBS="$LIBS -lshadow"
++AC_CHECK_LIB(crypt,crypt)
++AC_CHECK_LIB(sec,crypt)
++AC_CHECK_LIB(shadow,getspnam)
+ oldlibs="$LIBS"
+ LIBS="$LIBS -lsun"
+ AC_CHECKING(IRIX sun library)
+@@ -1104,6 +1197,13 @@
+ dnl    ****  misc things  ****
+ dnl
+ AC_CHECKING(wait union)
++AH_TEMPLATE([BSDWAIT],
++[Define BSDWAIT if your system defines a 'union wait' in <sys/wait.h>
++
++ Only allow BSDWAIT i.e. wait3 on nonposix systems, since
++ posix implies wait(3) and waitpid(3). vdlinden@fwi.uva.nl
++ TODO(Hannes) shipped config.h.in does that with a #ifdef
++])
+ AC_TRY_COMPILE([#include <sys/types.h>
+ #include <sys/wait.h>
+ ],[
+@@ -1114,6 +1214,13 @@
+ #endif
+ ],AC_DEFINE(BSDWAIT))
+ 
++AH_TEMPLATE([TERMIO],
++[Define TERMIO if you have struct termio instead of struct sgttyb.
++ This is usually the case for SVID systems, where BSD uses sgttyb.
++ POSIX systems should define this anyway, even though they use
++ struct termios.])
++
++
+ if test -z "$butterfly"; then
+ AC_CHECKING(for termio or termios)
+ AC_TRY_CPP([#include <termio.h>], AC_DEFINE(TERMIO),
+@@ -1123,17 +1230,35 @@
+ )
+ fi
+ 
++AH_TEMPLATE([CYTERMIO], [Define CYTERMIO if you have cyrillic termio modes.])
++
+ dnl AC_CHECK_HEADER(shadow.h, AC_DEFINE(SHADOWPW))
+ AC_CHECKING(getspnam)
++AH_TEMPLATE([SHADOWPW],
++[If the passwords are stored in a shadow file and you want the
++ builtin lock to work properly, define SHADOWPW.])
+ AC_TRY_LINK([#include <shadow.h>], [getspnam("x");],AC_DEFINE(SHADOWPW))
+ 
+ AC_CHECKING(getttyent)
++AH_TEMPLATE([GETTTYENT],
++[If your system has the new format /etc/ttys (like 4.3 BSD) and the
++ getttyent(3) library functions, define GETTTYENT.])
+ AC_TRY_LINK(,[getttyent();], AC_DEFINE(GETTTYENT))
+ 
+ AC_CHECKING(fdwalk)
++AH_TEMPLATE([HAVE_FDWALK],
++[Newer versions of Solaris include fdwalk, which can greatly improve
++ the startup time of screen; otherwise screen spends a lot of time
++ closing file descriptors.])
+ AC_TRY_LINK([#include <stdlib.h>], [fdwalk(NULL, NULL);],AC_DEFINE(HAVE_FDWALK))
+ 
+-AC_CHECKING(whether memcpy/memmove/bcopy handles overlapping arguments)
++AH_TEMPLATE([USEBCOPY],
++[Define USEBCOPY if the bcopy/memcpy from your system's C library
++ supports the overlapping of source and destination blocks.  When
++ undefined, screen uses its own (probably slower) version of bcopy().])
++
++AC_CACHE_CHECK([if bcopy handles overlap],
++              [screen_cv_sys_bcopy_overlap],
+ AC_TRY_RUN([
+ main() {
+   char buf[10];
+@@ -1146,7 +1271,21 @@
+   if (strncmp(buf, "cdedef", 6))
+     exit(1);
+   exit(0); /* libc version works properly.  */
+-}], AC_DEFINE(USEBCOPY))
++}], screen_cv_sys_bcopy_overlap=yes,
++screen_cv_sys_bcopy_overlap=no))
++if test X"$screen_cv_sys_bcopy_overlap" = Xyes; then
++  AC_DEFINE(USEBCOPY)
++fi
++
++AH_TEMPLATE([USEMEMMOVE],
++[SYSV machines may have a working memcpy() -- Oh, this is
++ quite unlikely. Tell me if you see one.
++ "But then, memmove() should work, if at all available" he thought...
++ Boing, never say "works everywhere" unless you checked SCO UNIX.
++ Their memove fails the test in the configure script. Sigh. (Juergen)
++])
++AC_CACHE_CHECK([if memmove handles overlap],
++              [screen_cv_sys_memmove_overlap],
+ 
+ AC_TRY_RUN([
+ #define bcopy(s,d,l) memmove(d,s,l)
+@@ -1161,9 +1300,15 @@
+   if (strncmp(buf, "cdedef", 6))
+     exit(1);
+   exit(0); /* libc version works properly.  */
+-}], AC_DEFINE(USEMEMMOVE))
+-
++}], screen_cv_sys_memmove_overlap=yes,
++screen_cv_sys_memmove_overlap=no))
++if test X"$screen_cv_sys_memmove_overlap" = Xyes; then
++  AC_DEFINE(USEMEMMOVE)
++fi
+ 
++AH_TEMPLATE([USEMEMCPY],[])
++AC_CACHE_CHECK([if memcpy handles overlap],
++              [screen_cv_sys_memcpy_overlap],
+ AC_TRY_RUN([
+ #define bcopy(s,d,l) memcpy(d,s,l)
+ main() {
+@@ -1177,9 +1322,19 @@
+   if (strncmp(buf, "cdedef", 6))
+     exit(1);
+   exit(0); /* libc version works properly.  */
+-}], AC_DEFINE(USEMEMCPY))
++}], screen_cv_sys_memcpy_overlap=yes,
++screen_cv_sys_memcpy_overlap=no))
++if test X"$screen_cv_sys_memcpy_overlap" = Xyes; then
++  AC_DEFINE(USEMEMCPY)
++fi
+ 
+ AC_MSG_CHECKING(long file names)
++AH_TEMPLATE([NAME_MAX],
++[If you are on a SYS V machine that restricts filename length to 14
++ characters, you may need to enforce that by setting NAME_MAX to 14])
++dnl TODO(Hannes) shipped config.h.in has
++dnl #undef NAME_MAX            /* KEEP_UNDEF_HERE override system value */
++dnl ahead of this
+ (echo 1 > /tmp/conftest9012345) 2>/dev/null
+ (echo 2 > /tmp/conftest9012346) 2>/dev/null
+ val=`cat /tmp/conftest9012345 2>/dev/null`
+@@ -1192,6 +1347,10 @@
+ rm -f /tmp/conftest*
+ 
+ AC_MSG_CHECKING(for vsprintf)
++AH_TEMPLATE([USEVARARGS],
++[If your system has vsprintf() and requires the use of the macros in
++ "varargs.h" to use functions with variable arguments,
++ define USEVARARGS.])
+ AC_TRY_LINK([#include <stdarg.h>],[va_list valist; vsprintf(0,0,valist);],
+ 	[AC_MSG_RESULT(yes);AC_DEFINE(USEVARARGS)],
+ 	[AC_MSG_RESULT(no)])
+@@ -1199,12 +1358,19 @@
+ AC_HEADER_DIRENT
+ 
+ AC_MSG_CHECKING(for setenv)
++AH_TEMPLATE([USESETENV], [If your system has setenv() and unsetenv() define USESETENV])
+ AC_TRY_LINK(,[setenv((char *)0,(char *)0);unsetenv((char *)0);], AC_MSG_RESULT(yes);AC_DEFINE(USESETENV),
+ AC_MSG_RESULT(no)
+ AC_MSG_CHECKING(for putenv)
++AH_TEMPLATE([NEEDPUTENV],
++[If your system does not come with a setenv()/putenv()/getenv()
++ functions, you may bring in our own code by defining NEEDPUTENV.])
+ AC_TRY_LINK(,[putenv((char *)0);unsetenv((char *)0);], AC_MSG_RESULT(yes) ,  AC_MSG_RESULT(no);AC_DEFINE(NEEDPUTENV)
+ ))
+ AC_MSG_CHECKING([for nl_langinfo(CODESET)])
++AH_TEMPLATE([HAVE_NL_LANGINFO],
++[define HAVE_NL_LANGINFO if your system has the nl_langinfo() call
++ and <langinfo.h> defines CODESET.])
+ AC_TRY_LINK([
+ #include <langinfo.h>
+ ],[nl_langinfo(CODESET);], AC_MSG_RESULT(yes);AC_DEFINE(HAVE_NL_LANGINFO), AC_MSG_RESULT(no))
+@@ -1254,7 +1420,8 @@
+ dnl Ptx bug workaround -- insert -lc after -ltermcap
+ test -n "$seqptx" && LIBS="-ltermcap -lc -lsocket -linet -lnsl -lsec -lseq"
+ 
+-AC_TRY_RUN(main(){exit(0);},,AC_MSG_ERROR(Can't run the compiler - internal error. Sorry.))
++AC_MSG_CHECKING(compiler sanity)
++AC_TRY_RUN(main(){exit(0);},,AC_MSG_ERROR(Can't run the compiler - internal error. Sorry.), AC_MSG_WARN(Skipping test due to crosscompilation))
+ 
+ ETCSCREENRC="\"/usr/local/etc/screenrc\""
+ if test -n "$prefix"; then