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[bug#55998] [PATCH] gnu: Add cctools.

From: Philip McGrath
Subject: [bug#55998] [PATCH] gnu: Add cctools.
Date: Wed, 15 Jun 2022 15:19:06 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.9.1

On 6/15/22 14:53, Maxime Devos wrote:
Philip McGrath schreef op wo 15-06-2022 om 13:15 [-0400]:
+      (synopsis "Darwin's @code{cctools} and @code{ld64}")
+      ;; Confusingly enough, the program is called ld64, but the command is
+      ;; just ld (with no symlink), so @command{ld64} would be wrong.
+      (description
+       "Darwin's @code{cctools} are a set of tools somewhat similar in purpose
+to GNU Binutils, but for Mach-O files targeting Darwin.  The suite includes
+@command{install_name_tool}, @command{libtool}, and other specialized tools in
+addition to standard utilities like @command{ld} and @command{as}.  This
+package provides portable versions of the tools.")
+      (license license:apsl2))))

How can this work? We don't have any (cross-compiled) Darwin libc
libraries to let it link against. Is this a draft patch?

Fortunately, we don't need a Darwin libc: tools like `install_name_tool` run on GNU/Linux, but work with Darwin binaries, somewhat like `patchelf` can work on a cross-compiled binary. From another point of view, it's a bit like some parts of MinGW.

This patch is not enough for a Darwin cross-compilation toolchain, though I believe it would play a role analogous to GNU Binutils in such a toolchain.

Still, several of the tools are useful (albeit niche) on their own, which is why I sent this patch now. A whole group of tools supports inspecting Mach-O binaries, for example.


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