xpg4/bin/sh should move back to SUNWcs
When in a POSIX-y frame of mind, system(3C) will use /usr/xpg4/bin/sh. pkg:/system/library should depend upon pkg:/system/xopen/xpg4 such that this may work.
This was hit during the illumos sendmail build when /usr/ccs/bin/m4 (which is an XPG6 executable) is used to build sendmail.cf
I suspect this was introduced when /usr/xpg4/bin/sh was moved out of SUNWcs. Another option would be to restore it to SUNWcs.
Updated by Rich Lowe about 10 years ago
- Subject changed from m4 requires xpg4 sh (because system(3C) does) but neither it nor libc depend upon it to xpg4/bin/sh should move back to SUNWcs
m4 is an XPG6 executable because it is a C99 executable, which necessitates using the XPG6 variants of some parts of libc.
You may then wonde why we have an xpg4/m4: it is linked with a marginally different parser, supporting shift operations. I can't find further differences, but did not look overly hard for them.
I am opting to restore /usr/xpg4/bin/sh to SUNWcs until such a time as #850 is fixed.