I have confirmed that rA69069bc63e6b fixes the build on macOS.

Yes, the fix is included in the Gpg4win 4.3.1.

Was the fix part of a stable release? The beta was 4.2.1b55. Stable download on https://gpg4win.de/ is 4.3.1. Am I correctly assuming, that 4.3.1 includes the fix and this issue here can be closed?

Use of execve is better (avoiding use of environ).

Fixed in: rA69069bc63e6b: Remove an declaration for an unused function

Actually we should get rid of stdio functions and use the es_foo replacements from libgpg-error.

Thank you for your report.

The use of putc_unlocked has long been removed. So we should also remove the declaration. Normally this does not harm but in your case you may want to pass CFLAGS="-DHAVE_PUTC_UNLOCKED" to make or remove the above declaration.

Verified the fix.

Pushed the change to master. Please test.
rCbb0895bbb7c6: m4: Fix acinclude.m4 for underscore detection in the symbol.

Thank you for the report.

Thanks for the detailed analysis; we will check to tomorrow why this was changed.

Here is a fix for the issue which preserves the removal of cut:

See: MacPorts Ticket 70267 and MacPorts PR #24601

While the above patch worked for MacOS 10.8 and above, MacPorts CI shows a second error for older MacOS versions:

It looks like various flavors of BSD (including macOS just declare environ when needed): environ -- user environment Note: this is a very old MacOS X man page, however the current version is from 2003, and has the same Synopsis.

This diff for 1.11.0 fixes the problem for me:

The following logic from 1.11.0 acinclude.m4 cannot possibly work to detect _ at the beginning of symbol names:

The toolchain is clang / llvm and the apple ld, native build, not cross compiling.

Meanwhile version 1.32.2 builds. Greatest change is Python 3.12 instead of 3.11…

Sorry, I meant they do *not* arrive at the web interface, they are not visible to me.

It seems my eMails to gnupg-devel@gnupg.org do reach the list …

On Mac OS X 10.5.8, PPC Leopard, it built with the patch, gpg-agent works.

Trying to reach Ralph Seichter via the eMail address he is using failed – Osterferien?

Thank you for your quick testing.

I've reported the success to MacPorts. My test was performed on only one platform, Mac OS X 10.4.11 or "Tiger". Since there exists a problem with building recent version of GPGME testing on Mac OS X 10.5.8 or "Leopard" will have to wait a few days…

With the unified patch all works fine (again), even the test target succeeds!

Performing the patch manually the "port" (package) built and installed. Starting then gpg-agent worked too, killing it (with gpgconf) worked as well.

The patches looks too large to merge (than actually needed), and not enough/clean like not having detection of the system.

strcasecmp is pretty standard on Unix. However, in GnuPG we test for it and mostly use our own ascii_strcasecmp to avoid fun with locales. Ralph Seichter is providing macOS builds for GnuPG (https://sourceforge.net/p/gpgosx/docu/Download/) . Maybe it is worth to contact him via the gnugp-devel mailing list and ask him whether he has experience with your toochain.

By adding "-Wl,-t" to the arguments g++ reported:

Libtool invocation has "--tag=CXX --mode=link /opt/local/bin/g++-mp-7 -std=c++11 -pipe -Os -std=c++17 -D_GLIBCXX_USE_CXX11_ABI=0", but g++ then has no -lstdc++ – in C -lc is automatically used because there all C library functions can be taken from… (same for mathematical functions and -lm)