[MacPorts] #55079: py27-cryptography @2.1.1 does not build on PPC Leopard, Mac OS X 10.5.8, because of invalid compiler switch: cc1: error: -Werror=sign-conversion: No option -Wsign-conversion

[MacPorts]

#55079: py27-cryptography @2.1.1 does not build on PPC Leopard, Mac OS X 10.5.8,
because of invalid compiler switch: cc1: error: -Werror=sign-conversion: No
option -Wsign-conversion
-----------------------+-------------------------------
 Reporter:  ballapete  |      Owner:
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.4.2
 Keywords:  leopard    |       Port:  py27-cryptography
-----------------------+-------------------------------
 {{{
 building '_openssl' extension
 creating build/temp.macosx-10.5-ppc-2.7/build
 creating build/temp.macosx-10.5-ppc-2.7/build/temp.macosx-10.5-ppc-2.7
 /usr/bin/gcc-4.2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -arch
 ppc
 -I/opt/local/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
 -c build/temp.macosx-10.5-ppc-2.7/_openssl.c -o
 build/temp.macosx-10.5-ppc-2.7/build/temp.macosx-10.5-ppc-2.7/_openssl.o
 -Wconversion -Wno-error=sign-conversion
 cc1: error: -Werror=sign-conversion: No option -Wsign-conversion
 error: command '/usr/bin/gcc-4.2' failed with exit status 1
 Command failed:  cd
 "/opt/local/var/macports/build/_opt_local_var_macports_sources_nue.de.rsync.macports
 .org_macports_release_tarballs_ports_python_py-
 cryptography/py27-cryptography/work/cryptography-2.1.1" &&
 /opt/local/Library/Frameworks/Python.framework/Versions/2.7/bin/python2.7
 setup.py --no-user-cfg build
 Exit code: 1
 Error: Failed to build py27-cryptography: command execution failed
 }}}

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Ticket URL: <https://trac.macports.org/ticket/55079>
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