+ Use i386-*-sco3.2v4 for SCO 3.2v4; Emacs runs as of version 19.26.
+
+ On GNU/Linux systems, Emacs 19.23 was said to work properly with libc
+ version 4.5.21, but not with 4.5.19. If your system uses QMAGIC
+ for the executable format, you must edit config.h to define LINUX_QMAGIC.
+
+ On GNU/Linux, configure may fail to put these definitions in config.h:
+
+ #define HAVE_GETTIMEOFDAY
+ #define HAVE_MKDIR
+ #define HAVE_RMDIR
+ #define HAVE_XSCREENNUMBEROFSCREEN
+
+ To work around the problem, add those definitions by hand.
+ It is possible that this problem happens only with X11R6
+ or that newer system versions have fixed it.
+
+ The 19.26 pretest was reported to work on SVR4.3 and on Freebsd.
+
+ 19.29 is reported to crash when using Motif on Solaris 2.5.
+ The reasons are not yet known.
+
+ Use i386-*-bsdiN for BSDI BSD/OS version N; Emacs runs as of version 19.23.
+ In some system versions, `make' is broken; use GNU make instead.
+ Shell bugs in version 1.0 of BSD/OS cause configure
+ to do the wrong thing with --with-x-toolkit; the workaround is to edit
+ configure to run another shell such as bash.
+
+ For System V release 3, use i386-*-sysv3.
+ For System V release 4, use i386-*-sysv4.
+ For System V release 4.2, use i386-*-sysv4.2.
+
+ If you are using Xenix, see notes at end under Xenix.
+ If you are using Esix, see notes at end under Esix.
+ If you are using SCO Unix, see notes at end under SCO.
+
+ On 386bsd, NetBSD and FreeBSD, at one time, it was necessary to use
+ GNU make, not the system's make. Assuming it's installed as gmake,
+ do `gmake install MAKE=gmake'. However, more recently it is
+ reported that using the system Make on NetBSD 1.3.1 works ok.
+
+ If you are using System V release 4.2, you may find that `cc -E'
+ puts spurious spaces in `src/xmakefile'. If that happens,
+ specify CPP=/lib/cpp as an option when you run make.
+ There is no problem if you compile with GCC.
+
+ Note that use of Linux with GCC 2.4 and the DLL 4.4 libraries
+ requires the experimental "net 2" network patches (no relation to
+ Berkeley Net 2). There is a report that (some version of) Linux
+ requires including `/usr/src/linux/include/linux' in buffer.c
+ but no coherent explanation of why that might be so. If it is so,
+ in current versions of Linux, something else should probably be changed.