illumos gate

I saw this in my build log:

/usr/bin/rm -f ../../i86pc/cpu/scripts/ao_gendisp;
/usr/bin/sed -e "s@TEXT_DOMAIN@\\"\\"@" ../../i86pc/cpu/scripts/ao_gendisp.pl > ../../i86pc/cpu/scripts/ao_gendisp;
/usr/bin/chmod +x ../../i86pc/cpu/scripts/ao_gendisp
../../i86pc/cpu/scripts/ao_gendisp ../../i86pc/cpu/amd_opteron/ao_mca_disp.in >debug64/ao_mca_disp.c
sh: line 1: ../../i86pc/cpu/scripts/ao_gendisp: cannot execute [Permission denied]

Root Cause:

The root cause seems to be that the usr/src/uts/Makefile runs all intel related architectures in parallel:

38 i386_ARCHITECTURES = i86pc i86xpv intel
39
40 #
41 # For i386 all architectures can be compiled in parallel.
42 #
43 # intel/Makefile knows how to build prerequisites needed for parallel build.
44 #
45 i386_PREREQ = intel
46 i386_PARALLEL = $(i386_ARCHITECTURES)
47
48 #
49 # For sparc all architectures can be compiled in parallel.
50 #
51 # sun4/Makefile knows how to build prerequisites needed for parallel build.
52 # can start.
53 #
54 sparc_PREREQ = sun4
55 sparc_PARALLEL = $(sparc_ARCHITECTURES)
56
57 #
58 # Platforms defined in $(MACH)_PARALLEL are built in parallel. DUMMY is placed
59 # at the end in case $(MACH)_PARALLEL is empty to prevent everything going in
60 # parallel.
61 #
62 .PARALLEL: $($(MACH)_PARALLEL) DUMMY

The ao_gendisp is built here:

usr/src/uts/i86pc/cpu/scripts/Makefile

but it is used here:

usr/src/uts/i86xpv/amd_opteron/Makefile
usr/src/uts/i86pc/amd_opteron/Makefile

so there is a chance that the i86xpv will need the ao_gendisp before it was properly built in the i86pc.