[MacPorts] #71120: m4: configure: error: Cannot find a type to use in place of socklen_t (was: Failed to configure m4 on Mac Sequoia)

[MacPorts]

#71120: m4: configure: error: Cannot find a type to use in place of socklen_t
---------------------------+--------------------
  Reporter:  tomasstolker  |      Owner:  (none)
      Type:  defect        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.10.2
Resolution:                |   Keywords:  arm64
      Port:  m4            |
---------------------------+--------------------
Changes (by ryandesign):

 * keywords:   => arm64


Comment:

 The main.log says the problem is:

 {{{
 :info:configure checking for socklen_t... no
 :info:configure checking for socklen_t equivalent... configure: error:
 Cannot find a type to use in place of socklen_t
 }}}

 The config.log says the reason for that is:

 {{{
 configure:57981: checking for socklen_t
 configure:57981: /usr/bin/clang -c -pipe -Os
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk -arch arm64
 -I/opt/local/include
 -isysroot/Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk conftest.c
 >&5
 In file included from conftest.c:526:
 In file included from
 /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/sys/types.h:81:
 In file included from
 /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/machine/endian.h:35:
 In file included from
 /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/i386/endian.h:85:
 In file included from
 /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/sys/_endian.h:131:
 In file included from
 /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/libkern/_OSByteOrder.h:62:
 /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/libkern/arm/_OSByteOrder.h:50:1:
 error: redefinition of '_OSSwapInt16'
    50 | _OSSwapInt16(
       | ^
 /Library/Developer/CommandLineTools/SDKs/MacOSX15.sdk/usr/include/libkern/i386/_OSByteOrder.h:50:1:
 note: previous definition is here
    50 | _OSSwapInt16(
       | ^
 }}}

 This looks like #62991 (and the same issue for grep in #64135) which were
 both fixed but the fix was only for when the universal variant is used.
 Your log shows you are not using the universal variant. However I do see
 this in your main.log:

 {{{
 :debug:sysinfo macOS 15.0.1 (darwin/24.0.0) arch i386
 }}}

 Are you on an Intel Mac or an Apple Silicon Mac? This line indicates
 MacPorts thinks you are on an Intel Mac, but the log shows you are trying
 to build m4 for Apple Silicon (arm64).

 If you're on an Intel Mac, you won't be able to run arm64 software at all,
 so I assume you're on an Apple Silicon Mac. In that case, this problem is
 typically caused by running the Intel version of MacPorts, which happens
 automatically if you're running an Intel shell, which happens
 automatically if you're running an Intel terminal program. The solution is
 to use an Apple Silicon terminal program, like the one Apple includes with
 macOS at /Applications/Utilities/Terminal.app.

 If you're already uisng Apple Terminal or a third-party terminal that is
 compiled for Apple Silicon, then go to the Finder, click the terminal
 program's icon, choose Get Info from the File menu, and see if the Open in
 Rosetta checkbox is checked. If it is, uncheck it, then close and reopen
 the terminal program.

-- 
Ticket URL: <https://trac.macports.org/ticket/71120#comment:3>
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