Hello,
I'm trying to use ptxdist on a Mac OS X system to get rid of the Linux VM just
for compiling things. Here is the thing I stumbled upon because I don't get the
intention and therefore struggle to find a patch.
The git commit 0dc57566bc5a25d2b086de333844a3c00addf0e4 from 2012-12-13 changed
the body of the ptxd_make_log() function in scripts/libptxdist.sh from this
implementation
-ptxd_make_log() {
- #
- # fd3 == stdout to logfile
- # fd4 == stderr to logfile
- # fd5 == clean stdout
- # fd6 == clean stderr
- #
- {
- export PTXDIST_FD_STDOUT=5
- export PTXDIST_FD_STDERR=6
- export PTXDIST_FD_LOGFILE=7
- {
- if [ -z "${PTXDIST_QUIET}" ]; then
- ptxd_make "${@}" 4>&- |
- # make's stdout on fd0
- tee -a "${PTX_LOGFILE}" 2>&4 4>&- 5>&- 6>&-
- check_pipe_status || return
- else
- exec 4>&-
- ptxd_make "${@}" 1>> "${PTX_LOGFILE}"
- fi
- } 2>&1 1>&3 3>&- 7>> "${PTX_LOGFILE}" |
- # make's stderr on fd0
- tee -a "${PTX_LOGFILE}" 1>&2 3>&- 4>&- 5>&- 6>&-
- check_pipe_status || return
- } 3>&1 4>&2 5>&1 6>&2
-}
to this implementation
+ptxd_make_log() {(
+ # stdout only
+ exec {PTXDIST_FD_STDOUT}>&1
+ # stderr only
+ exec {PTXDIST_FD_STDERR}>&2
+ # logfile only
+ exec 9>> "${PTX_LOGFILE}"
+ export PTXDIST_FD_STDOUT
+ export PTXDIST_FD_STDERR
+ export PTXDIST_FD_LOGFILE=9
+
+ if [ -z "${PTXDIST_QUIET}" ]; then
+ # stdout and logfile
+ exec {logout}> >(tee -a "${PTX_LOGFILE}")
+ else
+ # logfile only
+ exec {logout}>> "${PTX_LOGFILE}"
+ fi
+ # stderr and logfile
+ exec {logerr}> >(tee -a "${PTX_LOGFILE}" >&2)
+
+ ptxd_make "${@}" 1>&${logout} 2>&${logerr}
+)}
Now, my bash is complaining at the first exec command:
> exec: {PTXDIST_FD_STDOUT}: not found
To me, it looks fully understandable, because {PTXDIST_FD_STDOUT} is an
ill-formed brace expansion and is therefore ignored. But why is the Linux
(Ubuntu 12.04) not complaining about?
What is the intention of this brace usage here?
However, an
> echo a{b,c,d}e
expands on both machines to "abe ace ade" and an
> echo {logout}
gets ignored on both machines. Output is just "{logout}".
Best regards,
Christoph
--
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PDC Neuhausen
TKEI Elevator Control
Bernhaeuser Str. 45
73765 Neuhausen, Germany
Phone +49 7158 12-2615
[email protected]
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Executive Board: Gerhard Thumm, Katrin Huenger, Philippe Choleau
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