From 3263d8634da6d7e1edb1bfd88e1b2627ce0aa1be Mon Sep 17 00:00:00 2001
From: Ariadne Conill <ariadne@dereferenced.org>
Date: Thu, 6 Jan 2022 03:14:33 +0000
Subject: [PATCH] ppc64[le]: disable multilib support

multilib is not presently supported on Alpine GCC
---
 gcc/config/rs6000/t-linux       | 6 ++++--
 gcc/config/rs6000/t-linux64     | 4 ++--
 gcc/config/rs6000/t-linux64bele | 4 ++--
 gcc/config/rs6000/t-linux64lebe | 4 ++--
 4 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/gcc/config/rs6000/t-linux b/gcc/config/rs6000/t-linux
index 4e371255533..128c75c7d39 100644
--- a/gcc/config/rs6000/t-linux
+++ b/gcc/config/rs6000/t-linux
@@ -2,7 +2,8 @@
 # or soft-float.
 ifeq (,$(filter $(with_cpu),$(SOFT_FLOAT_CPUS))$(findstring soft,$(with_float)))
 ifneq (,$(findstring powerpc64,$(target)))
-MULTILIB_OSDIRNAMES := .=../lib64$(call if_multiarch,:powerpc64-linux-gnu)
+MULTILIB_OSDIRNAMES := m64=../lib
+MULTILIB_OSDIRNAMES += m32=../lib32
 else
 MULTIARCH_DIRNAME := $(call if_multiarch,powerpc-linux-gnu)
 endif
@@ -10,7 +11,8 @@ ifneq (,$(findstring powerpcle,$(target)))
 MULTIARCH_DIRNAME := $(subst -linux,le-linux,$(MULTIARCH_DIRNAME))
 endif
 ifneq (,$(findstring powerpc64le,$(target)))
-MULTILIB_OSDIRNAMES := $(subst -linux,le-linux,$(MULTILIB_OSDIRNAMES))
+MULTILIB_OSDIRNAMES := m64=../lib
+MULTILIB_OSDIRNAMES += m32=../lib32
 endif
 endif
 
diff --git a/gcc/config/rs6000/t-linux64 b/gcc/config/rs6000/t-linux64
index 47e0efd5764..f89729af64f 100644
--- a/gcc/config/rs6000/t-linux64
+++ b/gcc/config/rs6000/t-linux64
@@ -28,8 +28,8 @@
 MULTILIB_OPTIONS    := m64/m32
 MULTILIB_DIRNAMES   := 64 32
 MULTILIB_EXTRA_OPTS := 
-MULTILIB_OSDIRNAMES := m64=../lib64$(call if_multiarch,:powerpc64-linux-gnu)
-MULTILIB_OSDIRNAMES += m32=$(if $(wildcard $(shell echo $(SYSTEM_HEADER_DIR))/../../usr/lib32),../lib32,../lib)$(call if_multiarch,:powerpc-linux-gnu)
+MULTILIB_OSDIRNAMES := m64=../lib
+MULTILIB_OSDIRNAMES += m32=../lib32
 
 rs6000-linux.o: $(srcdir)/config/rs6000/rs6000-linux.cc
 	$(COMPILE) $<
diff --git a/gcc/config/rs6000/t-linux64bele b/gcc/config/rs6000/t-linux64bele
index 97c1ee6fb4d..08d72639cb6 100644
--- a/gcc/config/rs6000/t-linux64bele
+++ b/gcc/config/rs6000/t-linux64bele
@@ -2,6 +2,6 @@
 
 MULTILIB_OPTIONS    += mlittle
 MULTILIB_DIRNAMES   += le
-MULTILIB_OSDIRNAMES += $(subst =,.mlittle=,$(subst lible32,lib32le,$(subst lible64,lib64le,$(subst lib,lible,$(subst -linux,le-linux,$(MULTILIB_OSDIRNAMES))))))
-MULTILIB_OSDIRNAMES += $(subst $(if $(findstring 64,$(target)),m64,m32).,,$(filter $(if $(findstring 64,$(target)),m64,m32).mlittle%,$(MULTILIB_OSDIRNAMES)))
+MULTILIB_OSDIRNAMES = m64=../lib
+MULTILIB_OSDIRNAMES+= m32=../lib32
 MULTILIB_MATCHES    := ${MULTILIB_MATCHES_ENDIAN}
diff --git a/gcc/config/rs6000/t-linux64lebe b/gcc/config/rs6000/t-linux64lebe
index 2e63bdb9fc9..c6e1c5db65d 100644
--- a/gcc/config/rs6000/t-linux64lebe
+++ b/gcc/config/rs6000/t-linux64lebe
@@ -2,6 +2,6 @@
 
 MULTILIB_OPTIONS    += mbig
 MULTILIB_DIRNAMES   += be
-MULTILIB_OSDIRNAMES += $(subst =,.mbig=,$(subst libbe32,lib32be,$(subst libbe64,lib64be,$(subst lib,libbe,$(subst le-linux,-linux,$(MULTILIB_OSDIRNAMES))))))
-MULTILIB_OSDIRNAMES += $(subst $(if $(findstring 64,$(target)),m64,m32).,,$(filter $(if $(findstring 64,$(target)),m64,m32).mbig%,$(MULTILIB_OSDIRNAMES)))
+MULTILIB_OSDIRNAMES := m64=../lib
+MULTILIB_OSDIRNAMES += m32=../lib32
 MULTILIB_MATCHES    := ${MULTILIB_MATCHES_ENDIAN}