[MacPorts] #54712: libftdi1 @1.4: won't compile when libftdi0 is installed (was: libftdi1 won't compile)

[MacPorts]

#54712: libftdi1 @1.4: won't compile when libftdi0 is installed
-----------------------+----------------------
  Reporter:  rufty     |      Owner:  nerdling
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  libftdi1  |
-----------------------+----------------------

Comment (by ryandesign):

 The problem is here:

 {{{
 :info:build [ 90%] Building CXX object
 test/CMakeFiles/test_libftdi1.dir/baudrate.cpp.o
 :info:build cd
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libftdi/libftdi1/work/build/test
 && /usr/bin/clang++   -I/opt/local/include
 -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libftdi/libftdi1/work/libftdi1-1.4/src
 -I/opt/local/include/libusb-1.0  -Os -DNDEBUG -arch x86_64 -mmacosx-
 version-min=10.11   -Wall -o CMakeFiles/test_libftdi1.dir/baudrate.cpp.o
 -c
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libftdi/libftdi1/work/libftdi1-1.4/test/baudrate.cpp
 :info:build
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libftdi/libftdi1/work/libftdi1-1.4/test/baudrate.cpp:105:14:
 error: use of undeclared identifier 'TYPE_230X'; did you mean 'TYPE_232H'?
 :info:build         case TYPE_230X:
 :info:build              ^~~~~~~~~
 :info:build              TYPE_232H
 :info:build /opt/local/include/ftdi.h:25:97: note: 'TYPE_232H' declared
 here
 }}}

 I am able to reproduce this build failure, if the libftdi0 port is
 installed when trying to build libftdi1. The workaround is to deactivate
 the libftdi0 port first.

 baudrate.cpp contains the line `#include <ftdi.h>`. The compiler is being
 told to look for that file first in /opt/local/include. If the file were
 not found there, it would look in the second location
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libftdi/libftdi1/work/libftdi1-1.4/src
 and find it there and everything would be fine. But because libftdi0 is
 installed, an older incompatible version of ftdi.h is present in
 /opt/local/include, causing the build failure.

 The proper solution is to fix the order of the `-I` arguments, but I
 haven't looked at the build system to see how that might be accomplished.

 Until then, `PortGroup conflicts_build 1.0` and `conflicts_build libftdi0`
 could be added to the Portfile.

--
Ticket URL: <https://trac.macports.org/ticket/54712#comment:5>
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