From 9ac60f77d2f96cadacd8787de5cd5381e0252239 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@codesourcery.com>
Date: Wed, 30 Oct 2019 12:51:15 +0100
Subject: [PATCH] [LIBPHOBOS] Fix multi-lib RUNTESTFLAGS handling

Testing libphobos fails for multi-lib configs:

$ make check-target-libphobos RUNTESTFLAGS="--target_board=unix\{-m32,\}"

fails for every 32bit execution, because the host libgcc_s.so is used which
is not the correct version:

spawn [open ...]
./test_aa.exe: /lib/i386-linux-gnu/libgcc_s.so.1: version `GCC_7.0.0' not found (required by ./test_aa.exe)
FAIL: libphobos.aa/test_aa.d execution test

This can be fixed by adding a few lines from libstdc++/testsuite/lib/libstdc++.exp
to libphobos/testsuite/lib/libphobos.exp

Backport trunk r275332:

	libphobos/
	2019-09-03  Bernd Edlinger  <bernd.edlinger@hotmail.de>

	* testsuite/lib/libphobos.exp (libphobos_init): Add multi-lib libgcc
	dirs to the ld_library_path var.

From-SVN: r277611
---
 libphobos/ChangeLog                   |  9 +++++++++
 libphobos/testsuite/lib/libphobos.exp | 19 +++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/libphobos/ChangeLog b/libphobos/ChangeLog
index 24de0ab9bd8..becd8b1ec86 100644
--- a/libphobos/ChangeLog
+++ b/libphobos/ChangeLog
@@ -1,3 +1,12 @@
+2019-10-30  Thomas Schwinge  <thomas@codesourcery.com>
+
+	Backport from trunk:
+
+	2019-09-03  Bernd Edlinger  <bernd.edlinger@hotmail.de>
+
+	* testsuite/lib/libphobos.exp (libphobos_init): Add multi-lib libgcc
+	dirs to the ld_library_path var.
+
 2019-08-12  Release Manager
 
 	* GCC 9.2.0 released.
diff --git a/libphobos/testsuite/lib/libphobos.exp b/libphobos/testsuite/lib/libphobos.exp
index d3fe75358c8..056e8f1d444 100644
--- a/libphobos/testsuite/lib/libphobos.exp
+++ b/libphobos/testsuite/lib/libphobos.exp
@@ -170,6 +170,25 @@ proc libphobos_init { args } {
 	append ld_library_path ":${blddir}/src/.libs"
     }
 
+    # Compute what needs to be added to the existing LD_LIBRARY_PATH.
+    if {$gccdir != ""} {
+	set compiler ${gccdir}/gdc
+
+	if { [is_remote host] == 0 && [which $compiler] != 0 } {
+	  foreach i "[exec $compiler --print-multi-lib]" {
+	    set mldir ""
+	    regexp -- "\[a-z0-9=_/\.-\]*;" $i mldir
+	    set mldir [string trimright $mldir "\;@"]
+	    if { "$mldir" == "." } {
+	      continue
+	    }
+	    if { [llength [glob -nocomplain ${gccdir}/${mldir}/libgcc_s*.so.*]] >= 1 } {
+	      append ld_library_path ":${gccdir}/${mldir}"
+	    }
+	  }
+	}
+    }
+
     set_ld_library_path_env_vars
 
     libphobos_maybe_build_wrapper "${objdir}/testglue.o"