I've begun working on a port for the OpenBSD ports
tree, and I've run into a snag. Please keep in mind, I am
not a developer.
I'm attempting to build Nagios statically, as OpenBSD
3.2 now defaults to a chrooted Apache installation. I would
like to ensure I can contain Nagios within the chroot without
a bunch of libraries as well, so statically seemed the way to
go.
However, when the build process gets to statusmap.cgi,
it dies with the following (the other cgi's appeared to have
built statically just fine):
gcc -g -static -I/usr/local/include -DHAVE_CONFIG_H -DNSCGI -L/usr/local/lib statusmap.c getcgi.o cgiutils.o auth.o popen.o ../common/objects.c ../xdata/xodtemplate.c ../common/statusdata.c ../xdata/xsddefault.c -lgd -lz -lm -lpng -ljpeg edata.o ../xdata/xedtemplate.c -o statusmap.cgi
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: Undefined symbol `_pow' referenced from text segment
pngrtran.o: More undefined symbol _pow refs follow
png.o: Undefined symbol `_crc32' referenced from text segment
png.o: Undefined symbol `_crc32' referenced from text segment
collect2: ld returned 1 exit status
*** Error code 1
Stop in /var/www/nagios/nagios-1.0b6/cgi (line 135 of Makefile).
*** Error code 1
Stop in /var/www/nagios/nagios-1.0b6 (line 56 of Makefile).
So, I go clumsily fumbling around in the source and the
Makefile in cgi/, and I know that libpng provides these symbols,
so I figure "I just need to make sure that cgi is being linked
against libpng". Silly me.
From the Makefile:
statusmap.cgi: statusmap.c $(CGIDEPS) $(EDATADEPS)
$(CC) $(CFLAGS) $(LDFLAGS) statusmap.c $(CGILIBS) $(GDLIBS) $(EDATALIBS)
-o $@
And GDLIBS includes -lpng. Um. Now I'm lost, because I'm
a lowly sysadmin and not a developer.
I know this is basicstuff, and I googled for a while without much luck, so I'd appreciate
any hints/cluebats anyone could give me.
With my limitedexperience with code, I don't understand why the above symbols
were undefined.
Cluebat, anyone?
Thanks!Benny
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This post was automatically imported from historical nagios-devel mailing list archives
Original poster: benny@bennyvision.com