Anyone running X11 apps on Mojave? [Solved]

[Bill Cole]

On 21 Jan 2019, at 5:41, Pierre Malard wrote:

> It’s a great new for me but I have a subsidiary question:
>    « How can I use the MacPort BASH in place of Apple one? »
>
> If you have a solution…

I have options for that specific task...


1. Switch to the MacPorts bash without looping

Put these 4 lines at the top of  ~/.bash_profile:

if [ -z "$MACPORTS_BASH" ]  && [ -x /opt/local/bin/bash ]
then
   MACPORTS_BASH=DONE PATH=/opt/local/bin:$PATH  exec -l bash -l
fi

You could probably put those in /etc/profile with equivalent safety and 
make it happen for all login shells. This approach WILL NOT fix older 
versions of MacOS X, where /bin/sh (the POSIX default shell) is a 
version of bash which is vulnerable to serious security flaws. There is 
a risk in this because the MacPorts bash depends on MacPorts dynamic 
libraries. Adding precautionary checks inside the conditional might be 
able to mitigate those risks.

OR:

2. Replace /bin/sh

    The following patch will add a "static" variant to the bash port and 
includes a message describing how to replace /bin/sh with that build. If 
you use it, you MUST re-patch the Portfile every time the bash port is 
updated. It SHOULD NOT be in the MacPorts core because it is a 
horrifically unsupportable hack that no one should ever use because it 
violates the core of the OS.

HOWEVER: it has worked for me for a few years on a Snow Leopard machine 
where the last Apple bash cannot be allowed to exist...

************************ BEGIN PATCH ********************************
--- 
/opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/shells/bash/Portfile.orig	2018-06-02 
09:27:05.000000000 -0400
+++ 
/opt/local/var/macports/sources/rsync.macports.org/macports/release/tarballs/ports/shells/bash/Portfile	2018-06-09 
21:24:27.000000000 -0400
@@ -123,6 +123,29 @@
  # Always source .bashrc when connecting remotely with ssh, #40603
  configure.cflags-append -DSSH_SOURCE_BASHRC

+variant static description "Links all MacPorts library dependencies 
statically to allow the binary to replace the system shell"  {
+   system "mkdir -p ${prefix}/lib/statics"
+   system "ln -f ${prefix}/lib/*.a ${prefix}/lib/statics/"
+   system "ln -f ${prefix}/lib/*.o ${prefix}/lib/statics/"
+   configure.args-append  "--with-included-gettext 
--libdir=/opt/local/lib/statics "
+   configure.ldflags-delete "-L${prefix}/lib"
+   configure.ldflags-append "-L${prefix}/lib/statics"
+}
+
+post-install {
+  if {[variant_isset static]} {
+      ui_msg 
"***************************************************************"
+      ui_msg "If you want to replace the system shell with this build 
of bash,"
+      ui_msg "you must do so manually by copying or hardlinking it into 
/bin !"
+      ui_msg "      ln -f /opt/local/bin/bash /bin/bash"
+      ui_msg "      ln -f /opt/local/bin/bash /bin/sh"
+      ui_msg "OR:"
+      ui_msg "      cp /opt/local/bin/bash /bin/bash"
+      ui_msg "      cp /opt/local/bin/bash /bin/sh"
+      ui_msg 
"***************************************************************"
+   }
+}
+
  livecheck.type          regex
  livecheck.url           
http://ftp.gnu.org/gnu/${name}/${name}-${bash_version}-patches/?C=M&O=D
  livecheck.version       [format %03d ${bash_patchlevel}]
************************ END PATCH ********************************

The goal here is to build a shell that can replace /bin/sh and be 
independent of every dynamic shared library for which a linkable static 
library exists. The result on the Snow Leopard machine where I hacked 
this up is a /bin/sh which depends only on /usr/lib/libSystem.B.dylib, 
so in an emergency single-user boot where /opt/local is unmounted or 
mangled, the shell still can work.



-- 
Bill Cole
bill at scconsult.com or billcole at apache.org
(AKA @grumpybozo and many *@billmail.scconsult.com addresses)
Available For Hire: https://linkedin.com/in/billcole