error installing world from R/O src and obj

[Andriy Gapon]

On 11/10/2019 12:05, Andriy Gapon wrote:
> 
> Attempting to install r353380 (amd64) with src and obj mounted via NFS.
> The world has just been built albeit with NO_CLEAN=1.
> Getting this:
> ...
> ===> lib/clang (install)
> ===> lib/clang/libllvm (install)
> ===> lib/clang/libclang (install)
> ===> lib/clang/liblldb (install)
> ===> lib/clang/headers (install)
> clang-tblgen -gen-arm-fp16  -I
> /usr/devel/svn/quick-head/contrib/llvm/tools/clang/include/clang/Basic -d
> arm_fp16.h.d  -o arm_fp16.h
> /usr/devel/svn/quick-head/contrib/llvm/tools/clang/include/clang/Basic/arm_fp16.td
> clang-tblgen: error opening arm_fp16.h.d:Read-only file system
> *** Error code 1
> 
> Stop.
> 
> The command is:
> make installworld __MAKE_CONF=/dev/null SRCCONF=/dev/null DB_FROM_SRC=1 DESTDIR=/mnt
> 

It seems that buildworld NO_CLEAN=1 is not regenerating that header for some reason.
The command was: make buildworld -s -j12 __MAKE_CONF=/dev/null SRCCONF=/dev/null
NO_CLEAN=1

If I do make buildenv and then cd lib/clang/headers/ and run make there, I see this:
$ make
clang-tblgen -gen-arm-fp16  -I
/usr/devel/svn/quick-head/contrib/llvm/tools/clang/include/clang/Basic -d
arm_fp16.h.d  -o arm_fp16.h
/usr/devel/svn/quick-head/contrib/llvm/tools/clang/include/clang/Basic/arm_fp16.td

But afterwards:
$ ls -l /usr/obj/usr/devel/svn/quick-head/amd64.amd64/lib/clang/headers/arm_fp16.h*
-rw-r--r--  1 avg  wheel  36361 21 Jun 15:12
/usr/obj/usr/devel/svn/quick-head/amd64.amd64/lib/clang/headers/arm_fp16.h
-rw-r--r--  1 avg  wheel    100 11 Oct 12:16
/usr/obj/usr/devel/svn/quick-head/amd64.amd64/lib/clang/headers/arm_fp16.h.d

The .h.d file has a fresh timestamp, but .h is still old.

-- 
Andriy Gapon