[ipxe-devel] [OpenBSD] compilation error: net/80211/wpa.c:424: warning: format '%d' expects type '

[Pascal Stumpf]

On Sat, 7 Dec 2013 10:46:13 +0000, Stuart Henderson wrote:
> On 2013/12/06 17:05, Michael Brown wrote:
> > On 02/12/13 14:59, Jiri B wrote:
> > ># gmake bin/undionly.kpxe
> > >   [BIN] bin/undionly.kpxe.bin
> > >   [ZINFO] bin/undionly.kpxe.zinfo
> > >   [ZBIN] bin/undionly.kpxe.zbin
> > >Add at 0x787 outside output buffer
> > >Makefile.housekeeping:1052: recipe for target 'bin/undionly.kpxe.zbin' failed
> > >gmake: *** [bin/undionly.kpxe.zbin] Error 1
> > >gmake: *** Deleting file 'bin/undionly.kpxe.zbin'
> > >rm bin/undionly.kpxe.zinfo bin/undionly.kpxe.bin
> > >
> > ># cat -n Makefile.housekeeping | sed -n '1049,1054p'
> > >   1049  # Compress raw binary file
> > >   1050  #
> > >   1051  $(BIN)/%.zbin : $(BIN)/%.bin $(BIN)/%.zinfo $(ZBIN)
> > >   1052          $(QM)$(ECHO) "  [ZBIN] $@"
> > >   1053          $(Q)$(ZBIN) $(BIN)/$*.bin $(BIN)/$*.zinfo>  $@
> > >   1054
> > >-%-
> > >
> > >Any idea? Old GNU ld on OpenBSD, any workaround?
> > 
> > For reference, this should be fixed as of commit
> > 
> >   http://git.ipxe.org/ipxe.git/commitdiff/1403bda
> > 
> > Michael
> > 
> 
> They're not exactly dynamically linked, but PIE is used by default
> in OpenBSD (opt-out rather than opt-in; every program uses PIE unless
> specifically told not to).
> 
> So, even though the files are statically linked, they still use
> ld.so which handles the relocation.
> 
> The more accurate fix would probably be using "-fno-pie" rather than
> "-static". (-static implies -fno-pie).

Correction: -static implies -nopie (linker flag), not -fno-pie (compiler
flag).

-fno-pie: Do not generate position-independent code
-nopie: Do not try to link a position-independent binary

So a program that wishes to turn off PIE should use -fno-pie while
compiling and -static while linking.  Also note that -nopie is an
OpenBSD-only flag, so for a portable project, it is probably better to
rely on the fact that -static implies -nopie.

> c.f. memtest86+,
> http://www.openbsd.org/cgi-bin/cvsweb/~checkout~/ports/sysutils/memtest86+/patches/patch-Makefile
> 
>