In order to pass a status message at runtime,
which is usually listing subtargets
of a Makefile target or an error message,
from a child invocation of Make (submake)
through the parent process to the terminal,
the file descriptors 8 and 9 are opened to be used
by the functions MESSAGE and ERROR_MESSAGE.
However, there are situations where those functions
can be called while not in a submake or a subshell
or a child process which results in a shell error:
/bin/bash: 8: Bad file descriptor
Commit aee3594ffc
("verbose.mk: print ERROR messages in non-verbose")
has exposed this issue to more cases, but it is not the root cause.
To solve this, use the exit code of the first printf attempt
to the alternative file descriptors in order to tell whether
the standard file descriptors need to be used instead.
In order to get rid of the "Bad file descriptor" error, stderr is
redirected to null after grouping the two printf alternatives
into one command to combine outputs.
For ERROR_MESSAGE, the real message is redirected to stderr
after redirecting the error from the attempted printing to null.
For MESSAGE, without redirection, the Make function "shell"
will absorb the actual message from stdout and input the value into the Makefile,
therefore the dummy variable "_NULL", previously used merely for causing
a call to the MESSAGE function to trigger without writing target rules,
now has and a real value when defined, so rename it to "_MESSAGE"
as a placeholder for the real message when the output should be stdout.
When "_MESSAGE" has a value, use Make function "info" to
finally bring it from the Makefile to the terminal.
This also fixes what is likely a typo, in that
while file descriptor 9 is meant to redirect to stderr
for use in error messages like in the function ERROR_MESSAGE,
that function has printf redirecting to file descriptor 8 instead.
Fixes: a4c8d4e37 ("build: make the color of the 'configuration out of sync' warning red")
Signed-off-by: Michael Pratt <mcpratt@pm.me>
Using `make -j9` only prints a subset of messages to follow the build
process progressing. However this silently skips over errors which might
be of interested. Using `make V=s` easily floods the terminal making it
hard to find error messages between the lines.
A compromise is the usage of `$(call ERROR_MESSAGE,...)` which prints a
message in red. This function is silenced in the non-verbose mode, even
if only used at a single place in `package/Makefile` where it notifies
about a OPKG corner case.
This commit moves the `ERROR_MESSAGE` definition outside of the
`OPENWRT_VERBOSE` condition and print error messages in every mode.
With this in place further error messages are possible.
Signed-off-by: Paul Spooren <mail@aparcar.org>
The license folder is a core part of OpenWrt and all GPL-2.0 licensed.
Use SPDX license tags to allow machines to check licenses.
Signed-off-by: Paul Spooren <mail@aparcar.org>
[rebase, keep some Copyright lines, sharpen commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
build openwrt on centos 6 I should use devtoolset-3 to get gcc 4.9, but
it fail when make menuconfig. so I have to give option HOSTCC='gcc
-Wl,--copy-dt-needed-entries' to make. But it passed to sub make to
HOSTCC=gcc as micro SUBMAKE expand to HOSTCC=gcc
-Wl,--copy-dt-needed-entries. This patch fix this issue.
make -C build menuconfig HOSTCC='gcc -Wl,--copy-dt-needed-entries' V='1'
make: Entering directory `/work/openwrt/openwrt/build'
/opt/rh/devtoolset-3/root/usr/libexec/gcc/x86_64-redhat-linux/4.9.2/ld:
lxdialog/checklist.o: undefined reference to symbol 'acs_map'
//lib64/libtinfo.so.5: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
make[1]: *** [mconf] Error 1
make -s -C scripts/config all CC=gcc -Wl,--copy-dt-needed-entries: build
failed. Please re-run make with -j1 V=s to see what's going on
make: *** [scripts/config/mconf] Error 1
make: Leaving directory `/work/openwrt/openwrt/build'
Signed-off-by: 李国 <uxgood.org@gmail.com>
V=99 and V=1 are now deprecated in favor of a new verbosity class system,
though the old flags are still supported.
You can set the V variable on the command line (or OPENWRT_VERBOSE in the
environment) to one or more of the following characters:
- s: stdout+stderr (equal to the old V=99)
- c: commands (for build systems that suppress commands by default, e.g. kbuild)
- w: warnings/errors only (equal to the old V=1)
SVN-Revision: 31484
