From e889f8091a5a60d5961f545107b57b8e840204d0 Mon Sep 17 00:00:00 2001
From: Jauhien Piatlicki <jauhien@gentoo.org>
Date: Sun, 17 Aug 2014 08:23:36 +0200
Subject: [PATCH] Look for standard crates in LIBDIR provided by --libdir
 option, not in hardcoded libdir path. If there was no LIBDIR provided during
 configuration fallback to hardcoded paths.

Thanks to Jan Niklas Hasse for solution and to Alex Crichton for improvements.

Closes #11671
---
 configure                           | 23 +++++++++++++++++++++--
 mk/main.mk                          |  8 ++++++++
 src/etc/install.sh                  | 15 +++++++++++----
 src/librustc/metadata/filesearch.rs | 13 +++++++++----
 4 files changed, 49 insertions(+), 10 deletions(-)

diff --git a/configure b/configure
index 77900253014..c5c1bb4eb6c 100755
--- a/configure
+++ b/configure
@@ -550,9 +550,19 @@ CFG_LIBDIR_RELATIVE=lib
 if [ "$CFG_OSTYPE" = "pc-windows-gnu" ]
 then
     CFG_LIBDIR_RELATIVE=bin
-fi
+    CFG_LIBDIR="${CFG_PREFIX}/${CFG_LIBDIR_RELATIVE}"
+else
+    valopt libdir "${CFG_PREFIX}/${CFG_LIBDIR_RELATIVE}" "install libraries (ignored on windows platform)"
 
-valopt libdir "${CFG_PREFIX}/${CFG_LIBDIR_RELATIVE}" "install libraries"
+    case "$CFG_LIBDIR" in
+	"$CFG_PREFIX"/*) CAT_INC=2;;
+	"$CFG_PREFIX"*)  CAT_INC=1;;
+	*)
+            err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
+    esac
+
+    CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
+fi
 
 if [ $HELP -eq 1 ]
 then
@@ -989,6 +999,15 @@ for h in $CFG_HOST
 do
     for t in $CFG_TARGET
     do
+        # host lib dir stage0
+        make_dir $h/stage0/lib
+
+        # target bin dir stage0
+        make_dir $h/stage0/lib/rustlib/$t/bin
+
+        # target lib dir stage0
+        make_dir $h/stage0/lib/rustlib/$t/lib
+
         for i in 0 1 2 3
         do
             # host bin dir
diff --git a/mk/main.mk b/mk/main.mk
index 3df4d3bfa5e..7b42c5b4ae9 100644
--- a/mk/main.mk
+++ b/mk/main.mk
@@ -332,7 +332,15 @@ define SREQ
 # Destinations of artifacts for the host compiler
 HROOT$(1)_H_$(3) = $(3)/stage$(1)
 HBIN$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/bin
+ifeq ($$(CFG_WINDOWSY_$(3)),1)
 HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(CFG_LIBDIR_RELATIVE)
+else
+ifeq ($(1),0)
+HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/lib
+else
+HLIB$(1)_H_$(3) = $$(HROOT$(1)_H_$(3))/$$(CFG_LIBDIR_RELATIVE)
+endif
+endif
 
 # Destinations of artifacts for target architectures
 TROOT$(1)_T_$(2)_H_$(3) = $$(HLIB$(1)_H_$(3))/rustlib/$(2)
diff --git a/src/etc/install.sh b/src/etc/install.sh
index 4f43b1ed130..8bc48fc7934 100644
--- a/src/etc/install.sh
+++ b/src/etc/install.sh
@@ -301,9 +301,16 @@ fi
 flag uninstall "only uninstall from the installation prefix"
 opt verify 1 "verify that the installed binaries run correctly"
 valopt prefix "/usr/local" "set installation prefix"
-# NB This isn't quite the same definition as in `configure`.
-# just using 'lib' instead of CFG_LIBDIR_RELATIVE
+# NB This is exactly the same definition as in `configure`.
 valopt libdir "${CFG_PREFIX}/${CFG_LIBDIR_RELATIVE}" "install libraries"
+case "$CFG_LIBDIR" in
+    "$CFG_PREFIX"/*) CAT_INC=2;;
+    "$CFG_PREFIX"*)  CAT_INC=1;;
+    *)
+        err "libdir must begin with the prefix. Use --prefix to set it accordingly.";;
+esac
+CFG_LIBDIR_RELATIVE=`echo ${CFG_LIBDIR} | cut -c$((${#CFG_PREFIX}+${CAT_INC}))-`
+
 valopt mandir "${CFG_PREFIX}/share/man" "install man pages in PATH"
 
 if [ $HELP -eq 1 ]
@@ -428,9 +435,9 @@ while read p; do
     # Decide the destination of the file
     FILE_INSTALL_PATH="${CFG_PREFIX}/$p"
 
-    if echo "$p" | grep "^lib/" > /dev/null
+    if echo "$p" | grep "^${CFG_LIBDIR_RELATIVE}/" > /dev/null
     then
-        pp=`echo $p | sed 's/^lib\///'`
+        pp=`echo $p | sed "s%^${CFG_LIBDIR_RELATIVE}/%%"`
         FILE_INSTALL_PATH="${CFG_LIBDIR}/$pp"
     fi
 
diff --git a/src/librustc/metadata/filesearch.rs b/src/librustc/metadata/filesearch.rs
index 99e9deb4637..d536d8b3fa7 100644
--- a/src/librustc/metadata/filesearch.rs
+++ b/src/librustc/metadata/filesearch.rs
@@ -255,11 +255,16 @@ fn find_libdir(sysroot: &Path) -> String {
     // to lib64/lib32. This would be more foolproof by basing the sysroot off
     // of the directory where librustc is located, rather than where the rustc
     // binary is.
+    //If --libdir is set during configuration to the value other than
+    // "lib" (i.e. non-default), this value is used (see issue #16552).
 
-    if sysroot.join(primary_libdir_name()).join(rustlibdir()).exists() {
-        return primary_libdir_name();
-    } else {
-        return secondary_libdir_name();
+    match option_env!("CFG_LIBDIR_RELATIVE") {
+        Some(libdir) if libdir != "lib" => return libdir.to_string(),
+        _ => if sysroot.join(primary_libdir_name()).join(rustlibdir()).exists() {
+            return primary_libdir_name();
+        } else {
+            return secondary_libdir_name();
+        }
     }
 
     #[cfg(target_word_size = "64")]