README revision 1.15 
1$NetBSD: README,v 1.15 2021/05/07 14:52:59 cjep Exp $
2
3Special notes for cross-hosting a NetBSD build on certain platforms.  
4Only those platforms which have been tested to complete a "build.sh" run
5are listed.
6
7All hosts must have a POSIX compatible sh. /bin/sh is assumed unless 
8otherwise set. This can be overridden by setting HOST_SH in the environment.
9
10In addition all hosts must provide the following local tools:
11  gzip
12  gcc
13  g++
14  zlib and headers (this requirement may be dropped in future)
15
16FreeBSD
17=======
18
19build.sh was recently tested on:
20* FreeBSD 13 (amd64, aarch64) 
21* FreeBSD 12.2 (amd64, aarch64)
22* FreeBSD 11.4 (amd64)
23* FreeBSD 10.4 (amd64)
24
25Linux
26=====
27
28build.sh has been tested on:
29* Amazon Linux 2 (x86)
30* Debian 10 (x86, aarch64)
31* Red Hat Enterprise Linux 8 (x86, aarch64)
32* SUSE Enterprise Server 15 (x86)
33* Ubuntu Server 20.04 (x86, aarch64)
34* Ubuntu Server 18.04 (x86)
35
36* The gcc and g++ package must be installed, along with the typical system 
37  development packages (glibc-devel, etc.). The g++ package is sometimes 
38  called gcc-c++.
39
40* The ncurses-devel package must be installed (for nbinfo).
41
42* The zlib and zlib-devel packages must be installed (these are
43  called zlib1g and zlib1g-dev on Debian and Ubuntu Linux)
44
45* There is a known build problem on Linux/aarch64 with glibc <2.28
46
47macOS/Darwin
48============
49
50build.sh was recently tested on:
51* macOS Big Sur
52* macOS Catalina
53
54with up to date Xcode command line tools and APFS filesystems.
55(Previously, there have been issues building on case-insensitive 
56HFS filesystems.)
57
58HP-UX
59=====
60
61* zlib must be available.
62
63NetBSD (earlier releases)
64=========================
65
66* Tested on NetBSD 1.5.2 (machine-independently).
67* Should need no special setup.
68* _NETBSD_SOURCE is *not* to be defined/pulled in during compat/tools builds.
69  compat_defs.h will error out if it finds it defined. 
70
71Solaris
72=======
73
74(updated instruction for Solaris 11 further below)
75
76* Tested on Solaris/x86 8 (5.8) with gcc 2.95.2 and Solaris/sparc 8 (5.8)
77  with gcc 3.2 (not yet tested with SUNWspro).
78
79* $HOST_CC needs to be set properly (for gcc, it should be set to "gcc",
80  otherwise the improper /usr/ucb/cc may be invoked by accident).
81
82* The SUNWzlib package (or a built version of zlib visible to $HOST_CC,
83  such as SMCzlib from sunfreeware.com) must be installed.  This will be
84  fixed in the future to include zlib in libnbcompat.
85
86* Needs the following paths, in this order, in $PATH:
87
88      /usr/xpg4/bin
89      /usr/ccs/bin
90      <path to host C and C++ compilers>
91      /usr/bin
92
93  /usr/ucb may optionally be placed before /usr/bin, per your preference,
94  but /usr/ucb *MUST NOT* be before /usr/ccs/bin or before the path to
95  the host C and C++ compilers.
96
97Solaris 11:
98
99* Solaris 11.3
100 * Set PATH to /usr/xpg6/bin:/usr/xpg4/bin:/usr/bin
101 * Set HOST_CC to /usr/bin/gcc
102
103* Solaris 11.4
104 * Install gcc-5 since the default installed gcc-7 has issues when compiling 
105   toolchain version of groff (hypot())
106 * Set PATH to /usr/xpg7/bin:/usr/xpg6/bin:/usr/xpg4/bin:/usr/bin
107 * set HOST_CC to /usr/gcc/5/bin/gcc
108 * set HOST_CXX to /usr/gcc/5/bin/g++
109