https://github.com/jamesodhunt/procenv/commit/eea43c30adb7761ad5e6cf8c30d9911d4615fba6

From c612f9fac4e5f2279a1516ef6c7008e40d49a9b8 Mon Sep 17 00:00:00 2001
From: Brahmajit Das <brahmajit.xyz@gmail.com>
Date: Mon, 5 Jun 2023 14:20:58 +0000
Subject: [PATCH] Fix build on musl libc

On util.c the guard around #include sys/sysmacros.h prevents musl libc
from including the file, even though musl provides the header file, thus
failing with errors such as "call to undeclared function makedev".

In procenv.c although the function makedev is used but the file
sysmacros.h was never included, thus resulting in similar "call to
undeclared function makedev" error hence moving inclusion sysmacros.h to
source file from header file.

Signed-off-by: Brahmajit Das <brahmajit.xyz@gmail.com>
---
 src/procenv.c | 2 ++
 src/procenv.h | 3 ---
 src/util.c    | 2 --
 3 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/src/procenv.c b/src/procenv.c
index a67ac0b..e2be8cf 100644
--- a/src/procenv.c
+++ b/src/procenv.c
@@ -13,6 +13,8 @@
  */
 
 #include "procenv.h"
+/* major(3) / minor(3) */
+#include <sys/sysmacros.h>
 
 /**
  * doc:
diff --git a/src/procenv.h b/src/procenv.h
index a819d49..bf194fe 100644
--- a/src/procenv.h
+++ b/src/procenv.h
@@ -96,9 +96,6 @@
 #define PACKAGE_STRING PACKAGE_NAME
 #endif
 
-/* major(3) / minor(3) */
-#include <sys/sysmacros.h>
-
 #endif /* PROCENV_PLATFORM_ANDROID */
 
 /*********************************************************************/
diff --git a/src/util.c b/src/util.c
index ceac93f..bc8e3fc 100644
--- a/src/util.c
+++ b/src/util.c
@@ -6,9 +6,7 @@
  */
 
 #include "util.h"
-#if __GLIBC__
 #include <sys/sysmacros.h>
-#endif
 
 // FIXME
 extern struct procenv_user user;