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Andrew Geisslerc182c622020-05-15 14:13:32 -05001From 9c0c73ee48dbee2aad57f4dcdad1b7b74e77b944 Mon Sep 17 00:00:00 2001
Andrew Geissler82c905d2020-04-13 13:39:40 -05002From: Khem Raj <raj.khem@gmail.com>
3Date: Mon, 7 Dec 2015 23:41:45 +0000
Andrew Geisslerc182c622020-05-15 14:13:32 -05004Subject: [PATCH] Search target sysroot gcc version specific dirs with
Andrew Geissler82c905d2020-04-13 13:39:40 -05005 multilib.
6
7We install the gcc libraries (such as crtbegin.p) into
8<sysroot><libdir>/<target-sys>/5.2.0/
9which is a default search path for GCC (aka multi_suffix in the
10code below). <target-sys> is 'machine' in gcc's terminology. We use
11these directories so that multiple gcc versions could in theory
12co-exist on target.
13
14We only want to build one gcc-cross-canadian per arch and have this work
15for all multilibs. <target-sys> can be handled by mapping the multilib
16<target-sys> to the one used by gcc-cross-canadian, e.g.
17mips64-polkmllib32-linux
18is symlinked to by mips64-poky-linux.
19
20The default gcc search path in the target sysroot for a "lib64" mutlilib
21is:
22
23<sysroot>/lib32/mips64-poky-linux/5.2.0/
24<sysroot>/lib32/../lib64/
25<sysroot>/usr/lib32/mips64-poky-linux/5.2.0/
26<sysroot>/usr/lib32/../lib64/
27<sysroot>/lib32/
28<sysroot>/usr/lib32/
29
30which means that the lib32 crtbegin.o will be found and the lib64 ones
31will not which leads to compiler failures.
32
33This patch injects a multilib version of that path first so the lib64
34binaries can be found first. With this change the search path becomes:
35
36<sysroot>/lib32/../lib64/mips64-poky-linux/5.2.0/
37<sysroot>/lib32/mips64-poky-linux/5.2.0/
38<sysroot>/lib32/../lib64/
39<sysroot>/usr/lib32/../lib64/mips64-poky-linux/5.2.0/
40<sysroot>/usr/lib32/mips64-poky-linux/5.2.0/
41<sysroot>/usr/lib32/../lib64/
42<sysroot>/lib32/
43<sysroot>/usr/lib32/
44
45Upstream-Status: Pending
46RP 2015/7/31
47
48Signed-off-by: Khem Raj <raj.khem@gmail.com>
49---
50 gcc/gcc.c | 29 ++++++++++++++++++++++++++++-
51 1 file changed, 28 insertions(+), 1 deletion(-)
52
53diff --git a/gcc/gcc.c b/gcc/gcc.c
Andrew Geisslerc182c622020-05-15 14:13:32 -050054index 535d5c3bb65..04647ae812d 100644
Andrew Geissler82c905d2020-04-13 13:39:40 -050055--- a/gcc/gcc.c
56+++ b/gcc/gcc.c
Andrew Geisslerc182c622020-05-15 14:13:32 -050057@@ -2616,7 +2616,7 @@ for_each_path (const struct path_prefix *paths,
Andrew Geissler82c905d2020-04-13 13:39:40 -050058 if (path == NULL)
59 {
60 len = paths->max_len + extra_space + 1;
61- len += MAX (MAX (suffix_len, multi_os_dir_len), multiarch_len);
62+ len += MAX ((suffix_len + multi_os_dir_len), multiarch_len);
63 path = XNEWVEC (char, len);
64 }
65
Andrew Geisslerc182c622020-05-15 14:13:32 -050066@@ -2628,6 +2628,33 @@ for_each_path (const struct path_prefix *paths,
Andrew Geissler82c905d2020-04-13 13:39:40 -050067 /* Look first in MACHINE/VERSION subdirectory. */
68 if (!skip_multi_dir)
69 {
70+ if (!(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
71+ {
72+ const char *this_multi;
73+ size_t this_multi_len;
74+
75+ if (pl->os_multilib)
76+ {
77+ this_multi = multi_os_dir;
78+ this_multi_len = multi_os_dir_len;
79+ }
80+ else
81+ {
82+ this_multi = multi_dir;
83+ this_multi_len = multi_dir_len;
84+ }
85+
86+ /* Look in multilib MACHINE/VERSION subdirectory first */
87+ if (this_multi_len)
88+ {
89+ memcpy (path + len, this_multi, this_multi_len + 1);
90+ memcpy (path + len + this_multi_len, multi_suffix, suffix_len + 1);
91+ ret = callback (path, callback_info);
92+ if (ret)
93+ break;
94+ }
95+ }
96+
97 memcpy (path + len, multi_suffix, suffix_len + 1);
98 ret = callback (path, callback_info);
99 if (ret)