lighttpd @1.4.60: Configure failure with gcc5

[evanmiller (Evan Miller)]

Not sure if it's lighttpd, gcc5, or legacysupport, but somebody is passing -arch to gcc-mp-5 during configure and it is failing.

configure:3768: checking whether the C compiler works
configure:3790: /opt/local/bin/gcc-mp-5 -pipe -Os -std=c99 -I/opt/local/include/LegacySupport -arch ppc -I/opt/local/include -I/opt/local/include/LegacySupport -L/opt/local/lib -Wl,-headerpad_max_install_names -lMacportsLegacySupport -arch ppc conftest.c  >&5
gcc-mp-5: error: unrecognized command line option '-arch'
gcc-mp-5: error: unrecognized command line option '-arch'
configure:3794: $? = 1
configure:3832: result: no
configure: failed program was:
| /* confdefs.h */
| #define PACKAGE_NAME "lighttpd"
| #define PACKAGE_TARNAME "lighttpd"
| #define PACKAGE_VERSION "1.4.61"
| #define PACKAGE_STRING "lighttpd 1.4.61"
| #define PACKAGE_BUGREPORT "https://redmine.lighttpd.net/projects/lighttpd/boards/2"
| #define PACKAGE_URL "https://www.lighttpd.net/"
| #define PACKAGE "lighttpd"
| #define VERSION "1.4.61"
| /* end confdefs.h.  */
|
| int
| main ()
| {
|
|   ;
|   return 0;
| }
configure:3837: error: in `/opt/local/var/macports/build/_Users_emiller_macports.local_www_lighttpd/lighttpd/work/lighttpd-1.4.61':
configure:3839: error: C compiler cannot create executables
See `config.log' for more details

[evanmiller (Evan Miller)]

Seeing the same error configuring openldap-devel using configure.compiler=macports-gcc-4.9. This port does not use LegacySupport, so it appears to be some kind of issue in base that has incorrect information about which GCC versions support -arch.

[ryandesign (Ryan Carsten Schmidt)]

Is MacPorts selecting the gcc5 compiler for this port or did you do it manually? Manually selecting compilers by overriding configure.compiler on the command line is a useful debugging tool but is not expected to be used for real builds and in general we only support building ports with the compiler MacPorts selected, not arbitrary compilers.

[ryandesign (Ryan Carsten Schmidt)]

The log says:

:debug:configure Preferred compilers: apple-gcc-4.2 gcc-4.0 macports-gcc-7 macports-gcc-6 macports-gcc-5 macports-clang-3.4 macports-clang-3.3

This does make me suspicious about why gcc5 is being used, since it is 5th in the list; I would have expected the first compiler in the list to be used.

[evanmiller (Evan Miller)]

GCC5 was manually selected. I chose it in order to provide a more narrowly tailored compiler blacklist.

This appears to be a bug in base affecting PPC when building ports with GCC 4.6 through GCC 6. I am working on a solution here:

​https://github.com/evanmiller/macports-base/commit/2fc005a6222cda4ba6bdc39b62340f7251bef5e3

[ryandesign (Ryan Carsten Schmidt)]

Ok, then I would consider this report invalid.

If you have trouble building the port with the compiler MacPorts selected for you, please do report that.