https://bugs.gentoo.org/968162
https://gitlab.gnome.org/GNOME/babl/-/commit/9263d419231a2c0f36fc89dfb95d723f0ef85d80
https://gitlab.gnome.org/GNOME/babl/-/commit/e4522a33915a06d6703baa522487716f049e9942

From 9263d419231a2c0f36fc89dfb95d723f0ef85d80 Mon Sep 17 00:00:00 2001
From: Alfred Wingate <parona@protonmail.com>
Date: Sun, 15 Mar 2026 21:27:56 +0200
Subject: [PATCH] tools: allow use of NM env variable

Fixes: 841ad402d14b8239ae470691edf3012f707325bc
Reverts: e26e11e9bbe600b96d5e21adb4bf5df49d971deb
Signed-off-by: Alfred Wingate <parona@protonmail.com>
--- a/meson.build
+++ b/meson.build
@@ -575,6 +575,8 @@ endif
 subdir('bin')
 
 if not platform_osx and host_cpu_family != 'x86'
+  nm = find_program('nm', required: false)
+
   # Verify .def files for Windows linking.
   # We check this on non-Windows platform  on CI, and on Windows itself.
   custom_target('check-def-files',
@@ -584,6 +586,7 @@ if not platform_osx and host_cpu_family != 'x86'
     depends: [
       babl
     ],
+    env: nm.found() ? { 'NM': nm.full_path() } : {},
     output: [ 'check-def-files', ],
     command: [
       python, meson.project_source_root() / 'tools' / 'defcheck.py', '@INPUT@',
--- a/tools/defcheck.py
+++ b/tools/defcheck.py
@@ -30,7 +30,7 @@ Needs the tool "nm", "objdump" or "dumpbin" to work
 
 import os, sys, subprocess, shutil
 
-from os import path
+from os import getenv, path
 
 def_files = sys.argv[1:]
 
@@ -42,7 +42,7 @@ exclude_symbols = [
 have_errors = 0
 
 libextension   = ".so"
-command        = "nm --defined-only --extern-only "
+command        = getenv("NM", default="nm") + " --defined-only --extern-only "
 libprefix      = "lib"
 platform_linux = True
 
-- 
GitLab

From e4522a33915a06d6703baa522487716f049e9942 Mon Sep 17 00:00:00 2001
From: Alfred Wingate <parona@protonmail.com>
Date: Sun, 15 Mar 2026 18:36:35 +0200
Subject: [PATCH] tools: include error message to ease debugging

Signed-off-by: Alfred Wingate <parona@protonmail.com>
--- a/tools/defcheck.py
+++ b/tools/defcheck.py
@@ -85,6 +85,7 @@ for df in def_files:
    status, nm = subprocess.getstatusoutput (command + libname)
    if status != 0:
       print("trouble reading {} - has it been compiled?".format(libname))
+      print(nm)
       have_errors = -1
       continue
 
-- 
GitLab