Sergei TrofimovichandGitHub
46cfbf313d
Without the change `make -j16 --shuffle` occasinally fails to build as:
$ make -j16 --shuffle
...
bison -y -d -o util/configparser.c ./util/configparser.y
...
/libtool --tag=CC --mode=compile gcc -I. -I...-openssl-3.3.2-dev/include -I...-libevent-2.1.12-dev/include -I...-expat-2.6.3-dev/include -DSRCDIR=. -g -O2 -flto -fPIE -pthread -o configparser.lo -c util/configparser.c
...
util/configparser.c:755:3: error: expected ',' or '}' at end of input
755 | YYSYMBOL_server_low_rtt = 626, /* server_low_rtt */
| ^
The build failure happens due to this `Makefile.in` rule:
util/configparser.c util/configparser.h: $(srcdir)/util/configparser.y
@-if test ! -d util; then $(INSTALL) -d util; fi
$(YACC) -d -o util/configparser.c $(srcdir)/util/configparser.y
For GNU make that means that each of the targets will attempt the rule
execution when the file is missing: one for .c file and another for .h
file:
https://www.gnu.org/software/make/manual/html_node/Multiple-Targets.html
The workaround is to only run $(YACC) for .c target and use .c as a
pre-requisite for an .h file.
Before the change the build fails about every 10-th run.
After the change no build failures after 100 successful builds.
Unbound
Unbound is a validating, recursive, caching DNS resolver. It is designed to be fast and lean and incorporates modern features based on open standards. If you have any feedback, we would love to hear from you. Don’t hesitate to create an issue on Github or post a message on the Unbound mailing list. You can learn more about Unbound by reading our documentation.
Compiling
Make sure you have the C toolchain, OpenSSL and its include files, and libexpat installed. If building from the repository source you also need flex and bison installed. Unbound can be compiled and installed using:
./configure && make && make install
You can use libevent if you want. libevent is useful when using many (10000) outgoing ports. By default max 256 ports are opened at the same time and the builtin alternative is equally capable and a little faster.
Use the --with-libevent configure option to compile Unbound with libevent
support.
Unbound configuration
All of Unbound's configuration options are described in the man pages, which will be installed and are available on the Unbound documentation page.
An example configuration file is located in doc/example.conf.