id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	port
32507	net-snmp-config should not include -arch flags	jeremyhu@…	ryandesign@macports.org	"If perl5.12 is built +universal, then sane-backends will fail to build unless it is also built universal.  This is because sane-backends queries perl to figure out what LDFLAGS to use.  These LDFLAGS will include '-arch i386 -arch x86_64' even though sane-backends is only being built for x86_64.

This build failure will look like this to the user because libusb will not be universal:

{{{
checking usb.h presence... yes
checking for usb.h... yes
checking for usb_interrupt_read in -lusb... no
configure: error: USB support requested but required libraries not found.
shell command "" cd ""/opt/local/var/macports/build/_Users_jeremy_src_macports_trunk_dports_graphics_sane-backends/sane-backends/work/sane-backends-1.0.22"" && ./configure --prefix=/opt/local --mandir=/opt/local/share/man --with-docdir=/opt/local/share/doc/sane-backends --enable-local-backends --enable-libusb --disable-latex --without-gphoto2 "" returned error 1
Error: Target org.macports.configure returned: configure failure: shell command failed (see log for details)
Warning: the following items did not execute (for sane-backends): org.macports.install org.macports.configure org.macports.build org.macports.destroot
Log for sane-backends is at: /opt/local/var/macports/logs/_Users_jeremy_src_macports_trunk_dports_graphics_sane-backends/sane-backends/main.log
Error: Unable to upgrade port: 1
To report a bug, see <http://guide.macports.org/#project.tickets>
}}}

config.log shows the real cause:

{{{
configure:9640: checking for usb_interrupt_read in -lusb
configure:9665: /Developer/usr/bin/clang -o conftest -pipe -O2 -arch x86_64 -W -Wall -DNETSNMP_ENABLE_IPV6 -fno-strict-aliasing -pipe -O2 -Udarwin11 -Ddarwin11=darwin11 -pipe -O2 -arch i386 -fno-common -DPERL_DARWIN -I/opt/local/include -no-cpp-precomp -fno-strict-aliasing -fstack-protector -I/opt/local/include -I/opt/local/lib/perl5/5.12.3/darwin-multi-2level/CORE -I/opt/local/include -I/opt/local/include -I. -I/opt/local/include -I/opt/local/include -no-cpp-precomp -fno-common -include sys/types.h -D_REENTRANT -L/opt/local/lib -arch x86_64 conftest.c -lusb   -Wl,-framework,CoreFoundation -Wl,-framework,IOKit -L/opt/local/lib -L/opt/local/lib -L/opt/local/lib -lnetsnmp -lcrypto >&5
clang: warning: argument unused during compilation: '-no-cpp-precomp'
clang: warning: argument unused during compilation: '-no-cpp-precomp'
ld: warning: ignoring file /opt/local/lib/libusb.dylib, file was built for unsupported file format which is not the architecture being linked (i386)
Undefined symbols for architecture i386:
  ""_usb_interrupt_read"", referenced from:
      _main in cc-BlaEF1.o
}}}"	defect	closed	Normal		ports	2.0.3	fixed			net-snmp