Some hard-coded paths make problems when package is built into chroot like
Software Collections. Removing these hard-coded paths should fix it.

Upstream report: https://mariadb.atlassian.net/browse/MDEV-6485


diff -up --recursive mysql-5.7.8.orig/client/mysql_plugin.c mysql-5.7.8/client/mysql_plugin.c
--- mysql-5.7.8.orig/client/mysql_plugin.c	2015-07-20 14:25:08.000000000 +0200
+++ mysql-5.7.8/client/mysql_plugin.c	2015-09-23 13:32:57.711495542 +0200
@@ -94,6 +94,7 @@ static int find_plugin(char *tp_path);
 static int build_bootstrap_file(char *operation, char *bootstrap);
 static int dump_bootstrap_file(char *bootstrap_file);
 static int bootstrap_server(char *server_path, char *bootstrap_file);
+static int find_file_in_path(const char *name, char *to);
 
 
 int main(int argc,char *argv[])
@@ -125,7 +126,7 @@ int main(int argc,char *argv[])
   */
   if ((error= process_options(argc, argv, operation)) ||
       (error= check_access()) ||
-      (error= find_tool("mysqld" FN_EXEEXT, server_path)) ||
+      (error= find_file_in_path("mysqld" FN_EXEEXT, server_path)) ||
       (error= find_plugin(tp_path)) ||
       (error= build_bootstrap_file(operation, bootstrap)))
     goto exit;
@@ -331,7 +332,7 @@ static int get_default_values()
   FILE *file= 0;
 
   memset(tool_path, 0, FN_REFLEN);
-  if ((error= find_tool("my_print_defaults" FN_EXEEXT, tool_path)))
+  if ((error= find_file_in_path("my_print_defaults" FN_EXEEXT, tool_path)))
     goto exit;
   else
   {
@@ -1014,6 +1015,55 @@ exit:
 }
 
 
+#if defined(__WIN__)
+#define F_OK 0
+#define PATH_SEP ';'
+#define PROGRAM_EXTENSION ".exe"
+#else
+#define PATH_SEP ':'
+#endif
+
+static int find_file_in_path(const char *name, char *to)
+{
+  char *path,*pos,dir[2];
+  const char *ext="";
+
+  if (!(path=getenv("PATH")))
+    goto notfound;
+  dir[0]=FN_LIBCHAR; dir[1]=0;
+#ifdef PROGRAM_EXTENSION
+  if (!fn_ext(name)[0])
+    ext=PROGRAM_EXTENSION;
+#endif
+
+  for (pos=path ; (pos=strchr(pos,PATH_SEP)) ; path= ++pos)
+  {
+    if (path != pos)
+    {
+      strxmov(my_stpnmov(to,path,(uint) (pos-path)),dir,name,ext,NullS);
+      if (!access(to,F_OK))
+      {
+        if (opt_verbose)
+          printf("# Found tool '%s' as '%s'.\n", name, to);
+	return 0;
+      }
+    }
+  }
+#ifdef __WIN__
+  to[0]=FN_CURLIB;
+  strxmov(to+1,dir,name,ext,NullS);
+  if (!access(to,F_OK))			/* Test in current dir */
+  {
+    if (opt_verbose)
+      printf("# Found tool '%s' as '%s'.\n", name, to);
+    return 0;
+  }
+#endif
+notfound:
+  fprintf(stderr, "WARNING: Cannot find %s.\n", name);
+  return 1;				/* File not found */
+}
+
 /**
   Locate the tool and form tool path.
 
diff -up --recursive mysql-5.7.8.orig/cmake/install_layout.cmake mysql-5.7.8/cmake/install_layout.cmake
--- mysql-5.7.8.orig/cmake/install_layout.cmake	2015-07-20 14:25:07.000000000 +0200
+++ mysql-5.7.8/cmake/install_layout.cmake	2015-09-23 13:32:57.711495542 +0200
@@ -107,7 +107,7 @@ IF(UNIX)
     " Choose between ${VALID_INSTALL_LAYOUTS}" )
   ENDIF()
 
-  SET(SYSCONFDIR "${CMAKE_INSTALL_PREFIX}/etc"
+  SET(SYSCONFDIR "/etc"
     CACHE PATH "config directory (for my.cnf)")
   MARK_AS_ADVANCED(SYSCONFDIR)
 ENDIF()
@@ -321,6 +321,7 @@ SET(INSTALL_SECURE_FILE_PRIV_EMBEDDEDDIR
 SET(INSTALL_BINDIR_RPM                  "bin")
 SET(INSTALL_SBINDIR_RPM                 "sbin")
 SET(INSTALL_SCRIPTDIR_RPM               "bin")
+SET(INSTALL_SYSCONFDIR_RPM              "/etc")
 #
 IF(CMAKE_SYSTEM_PROCESSOR MATCHES "x86_64")
   SET(INSTALL_LIBDIR_RPM                "lib64")
diff -up --recursive mysql-5.7.8.orig/mysys_ssl/my_default.cc mysql-5.7.8/mysys_ssl/my_default.cc
--- mysql-5.7.8.orig/mysys_ssl/my_default.cc	2015-07-20 14:25:08.000000000 +0200
+++ mysql-5.7.8/mysys_ssl/my_default.cc	2015-09-23 13:32:57.712495541 +0200
@@ -1404,12 +1404,12 @@ static const char **init_default_directo
 
 #else
 
-  errors += add_directory(alloc, "/etc/", dirs);
-  errors += add_directory(alloc, "/etc/mysql/", dirs);
-
 #if defined(DEFAULT_SYSCONFDIR)
   if (DEFAULT_SYSCONFDIR[0])
+  {
     errors += add_directory(alloc, DEFAULT_SYSCONFDIR, dirs);
+    errors += add_directory(alloc, DEFAULT_SYSCONFDIR "/mysql", dirs);
+  }
 #endif /* DEFAULT_SYSCONFDIR */
 
 #endif
diff -up --recursive mysql-5.7.8.orig/scripts/CMakeLists.txt mysql-5.7.8/scripts/CMakeLists.txt
--- mysql-5.7.8.orig/scripts/CMakeLists.txt	2015-07-20 14:25:08.000000000 +0200
+++ mysql-5.7.8/scripts/CMakeLists.txt	2015-09-23 13:43:47.463665346 +0200
@@ -295,7 +295,7 @@ ELSE()
 ENDIF()
 
 SET(prefix "${CMAKE_INSTALL_PREFIX}")
-SET(sysconfdir ${prefix})
+SET(sysconfdir ${SYSCONFDIR})
 SET(bindir ${prefix}/${INSTALL_BINDIR})
 SET(libexecdir ${prefix}/${INSTALL_SBINDIR})
 SET(scriptdir ${prefix}/${INSTALL_BINDIR})
diff -up --recursive mysql-5.7.8.orig/scripts/mysqld_multi.sh mysql-5.7.8/scripts/mysqld_multi.sh
--- mysql-5.7.8.orig/scripts/mysqld_multi.sh	2015-07-20 14:25:08.000000000 +0200
+++ mysql-5.7.8/scripts/mysqld_multi.sh	2015-09-23 13:32:57.712495541 +0200
@@ -573,9 +573,7 @@ sub list_defaults_files
 
   my %seen;  # Don't list the same file more than once
   return grep { defined $_ and not $seen{$_}++ and -f $_ and -r $_ }
-              ('/etc/my.cnf',
-               '/etc/mysql/my.cnf',
-               '@sysconfdir@/my.cnf',
+              ('@sysconfdir@/my.cnf',
                ($ENV{MYSQL_HOME} ? "$ENV{MYSQL_HOME}/my.cnf" : undef),
                $opt{'extra-file'},
                ($ENV{HOME} ? "$ENV{HOME}/.my.cnf" : undef));