[PR PATCH] a2jmidid: fix build on musl/ppc (and also a correction on glibc)

[voidlinux-github@inbox.vuxu.org]

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There is a new pull request by q66 against master on the void-packages repository

https://github.com/void-ppc/void-packages a2jmidid
https://github.com/void-linux/void-packages/pull/15866

a2jmidid: fix build on musl/ppc (and also a correction on glibc)


A patch file from https://github.com/void-linux/void-packages/pull/15866.patch is attached

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From 93024b47c4121c417aa9f748810621e3143b563e Mon Sep 17 00:00:00 2001
From: q66 <daniel@octaforge.org>
Date: Mon, 28 Oct 2019 20:00:45 +0100
Subject: [PATCH] a2jmidid: fix build on musl/ppc (and also a correction on
 glibc)

[ci skip]
---
 srcpkgs/a2jmidid/patches/musl-ppc.patch | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 srcpkgs/a2jmidid/patches/musl-ppc.patch

diff --git a/srcpkgs/a2jmidid/patches/musl-ppc.patch b/srcpkgs/a2jmidid/patches/musl-ppc.patch
new file mode 100644
index 00000000000..c16523512ef
--- /dev/null
+++ b/srcpkgs/a2jmidid/patches/musl-ppc.patch
@@ -0,0 +1,18 @@
+This fixes build on ppc32/musl but also fixes incorrect usage of uc_regs
+on glibc (uc_regs is an mcontext_t pointer, you can't index it directly)
+
+--- sigsegv.c
++++ sigsegv.c
+@@ -97,7 +97,11 @@ static void signal_segv(int signum, siginfo_t* info, void*ptr) {
+     for(i = 0; i < NGREG; i++)
+         a2j_error("reg[%02d]       = 0x" REGFORMAT, i,
+ #if defined(__powerpc__) && !defined(__powerpc64__)
+-                ucontext->uc_mcontext.uc_regs[i]
++#if defined(__GLIBC__)
++                ucontext->uc_mcontext.uc_regs->gregs[i]
++#else
++                ucontext->uc_mcontext.gregs[i]
++#endif
+ #elif defined(__powerpc64__)
+                 ucontext->uc_mcontext.gp_regs[i]
+ #elif defined(__sparc__) && defined(__arch64__)