1# Copyright (C) 2013-2016 Free Software Foundation, Inc.
2
3# This program is free software; you can redistribute it and/or modify
4# it under the terms of the GNU General Public License as published by
5# the Free Software Foundation; either version 3 of the License, or
6# (at your option) any later version.
7#
8# This program is distributed in the hope that it will be useful,
9# but WITHOUT ANY WARRANTY; without even the implied warranty of
10# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
11# GNU General Public License for more details.
12#
13# You should have received a copy of the GNU General Public License
14# along with GCC; see the file COPYING3.  If not see
15# <http://www.gnu.org/licenses/>.
16
17#
18# atomic_link_flags -- compute library path and flags to find libatomic.
19# (originally from g++.exp)
20#
21
22proc atomic_link_flags { paths } {
23    global srcdir
24    global ld_library_path
25    global shlib_ext
26
27    set gccpath ${paths}
28    set flags ""
29
30    set shlib_ext [get_shlib_extension]
31
32    if { $gccpath != "" } {
33      if { [file exists "${gccpath}/libatomic/.libs/libatomic.a"]
34	   || [file exists "${gccpath}/libatomic/.libs/libatomic.${shlib_ext}"] } {
35	  append flags " -B${gccpath}/libatomic/ "
36	  append flags " -L${gccpath}/libatomic/.libs"
37	  append ld_library_path ":${gccpath}/libatomic/.libs"
38      }
39    } else {
40      global tool_root_dir
41
42      set libatomic [lookfor_file ${tool_root_dir} libatomic]
43      if { $libatomic != "" } {
44	  append flags "-L${libatomic} "
45	  append ld_library_path ":${libatomic}"
46      }
47    }
48
49    set_ld_library_path_env_vars
50
51    return "$flags"
52}
53
54#
55# atomic_init -- called at the start of each subdir of tests
56#
57
58proc atomic_init { args } {
59    global TEST_ALWAYS_FLAGS
60    global ALWAYS_CXXFLAGS
61    global TOOL_OPTIONS
62    global atomic_saved_TEST_ALWAYS_FLAGS
63    global atomic_saved_ALWAYS_CXXFLAGS
64
65    set link_flags ""
66    if ![is_remote host] {
67	if [info exists TOOL_OPTIONS] {
68	    set link_flags "[atomic_link_flags [get_multilibs ${TOOL_OPTIONS}]]"
69	} else {
70	    set link_flags "[atomic_link_flags [get_multilibs]]"
71	}
72    }
73
74    append link_flags " -latomic "
75
76    if [info exists TEST_ALWAYS_FLAGS] {
77	set atomic_saved_TEST_ALWAYS_FLAGS $TEST_ALWAYS_FLAGS
78    }
79    if [info exists ALWAYS_CXXFLAGS] {
80	set atomic_saved_ALWAYS_CXXFLAGS $ALWAYS_CXXFLAGS
81	set ALWAYS_CXXFLAGS [concat "{ldflags=$link_flags}" $ALWAYS_CXXFLAGS]
82    } else {
83	if [info exists TEST_ALWAYS_FLAGS] {
84	    set TEST_ALWAYS_FLAGS "$link_flags $TEST_ALWAYS_FLAGS"
85	} else {
86	    set TEST_ALWAYS_FLAGS "$link_flags"
87	}
88    }
89    return [check_no_compiler_messages_nocache libatomic_available executable {
90	int main (void) { return 0; }
91    }]
92}
93
94#
95# atomic_finish -- called at the end of each subdir of tests
96#
97
98proc atomic_finish { args } {
99    global TEST_ALWAYS_FLAGS
100    global atomic_saved_TEST_ALWAYS_FLAGS
101    global atomic_saved_ALWAYS_CXXFLAGS
102
103    if [info exists atomic_saved_ALWAYS_CXXFLAGS] {
104	set ALWAYS_CXXFLAGS $atomic_saved_ALWAYS_CXXFLAGS
105    } else {
106	if [info exists atomic_saved_TEST_ALWAYS_FLAGS] {
107	  set TEST_ALWAYS_FLAGS $atomic_saved_TEST_ALWAYS_FLAGS
108	} else {
109	  unset TEST_ALWAYS_FLAGS
110	}
111    }
112    clear_effective_target_cache
113}
114