编译glibc遇到的问题
https://blog.csdn.net/jiuweideqixu/article/details/104408432
因为学习堆的时候需要glibc2.26以下的版本，决定自己在docker里编译一个glibc2.24，中间遇到一些bug记录如下
.symver on common symbols
编译时报错
/tmp/ccPRCqlU.s: Error: `loc1@GLIBC_2.2.5' can't be versioned to common symbol 'loc1'
/tmp/ccPRCqlU.s: Error: `loc2@GLIBC_2.2.5' can't be versioned to common symbol 'loc2'
/tmp/ccPRCqlU.s: Error: `locs@GLIBC_2.2.5' can't be versioned to common symbol 'locs'
- 1
- 2
- 3
解决方案:https://patchwork.ozlabs.org/patch/780067/
patch
--- a/misc/regexp.c
+++ b/misc/regexp.c
@@ -29,14 +29,15 @@
#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_23)
-/* Define the variables used for the interface. */
-char *loc1;
-char *loc2;
+/* Define the variables used for the interface. Avoid .symver on common
+ symbol, which just creates a new common symbol, not an alias. */
+char *loc1 __attribute__ ((nocommon));
+char *loc2 __attribute__ ((nocommon));
compat_symbol (libc, loc1, loc1, GLIBC_2_0);
compat_symbol (libc, loc2, loc2, GLIBC_2_0);
/* Although we do not support the use we define this variable as well. */
-char *locs;
+char *locs __attribute__ ((nocommon));
compat_symbol (libc, locs, locs, GLIBC_2_0);
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
target ‘/root/build/math/e_pow.o’ failed
报错如下：
../sysdeps/ieee754/dbl-64/e_pow.c:469:13: error: ‘<<’ in boolean context, did you mean ‘<’ ? [-Werror=int-in-bool-context]
if (n << (k - 20))
~~^~~~~~~~~~~
../sysdeps/ieee754/dbl-64/e_pow.c:471:17: error: ‘<<’ in boolean context, did you mean ‘<’ ? [-Werror=int-in-bool-context]
return (n << (k - 21)) ? -1 : 1;
~~~^~~~~~~~~~~~
../sysdeps/ieee754/dbl-64/e_pow.c:477:9: error: ‘<<’ in boolean context, did you mean ‘<’ ? [-Werror=int-in-bool-context]
if (m << (k + 12))
~~^~~~~~~~~~~
../sysdeps/ieee754/dbl-64/e_pow.c:479:13: error: ‘<<’ in boolean context, did you mean ‘<’ ? [-Werror=int-in-bool-context]
return (m << (k + 11)) ? -1 : 1;
~~~^~~~~~~~~~~~
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
解决方案: https://patchwork.ozlabs.org/patch/680578/
patch
diff --git a/sysdeps/ieee754/dbl-64/e_pow.c b/sysdeps/ieee754/dbl-64/e_pow.c
index 663fa39..bd758b5 100644
--- a/!
+++ b/sysdeps/ieee754/dbl-64/e_pow.c
@@ -466,15 +466,15 @@ checkint (double x)
return (n & 1) ? -1 : 1; /* odd or even */
if (k > 20)
{
- if (n << (k - 20))
+ if (n << (k - 20) != 0)
return 0; /* if not integer */
- return (n << (k - 21)) ? -1 : 1;
+ return (n << (k - 21) != 0) ? -1 : 1;
}
if (n)
return 0; /*if not integer */
if (k == 20)
return (m & 1) ? -1 : 1;
- if (m << (k + 12))
+ if (m << (k + 12) != 0)
return 0;
- return (m << (k + 11)) ? -1 : 1;
+ return (m << (k + 11) != 0) ? -1 : 1;
}
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
sunrpc/rpc_parse.c
rpc_parse.c:543:23: error: ‘%d’ directive writing between 1 and 10 bytes into a region of size 7 [-Werror=format-overflow=]
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
^~
rpc_parse.c:543:20: note: directive argument in the range [1, 2147483647]
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
^~~~~~
rpc_parse.c:543:5: note: ‘sprintf’ output between 5 and 14 bytes into a destination of size 10
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
解决方案:
--- a/sunrpc/rpc_parse.c
+++ b/sunrpc/rpc_parse.c
@@ -521,7 +521,7 @@ static void
get_prog_declaration (declaration * dec, defkind dkind, int num /* arg number */ )
{
token tok;
- char name[10]; /* argument name */
+ char name[MAXLINESIZE]; /* argument name */
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
nis/nss_nisplus/nisplus-alias.c
nss_nisplus/nisplus-alias.c:300:12: error: argument 1 null where non-null expected [-Werror=nonnull]
[ERROR] nss_nisplus/nisplus-alias.c:303:39: error: '%s' directive argument is null [-Werror=format-truncation=]
[ERROR] make[3]: *** [/Volumes/OSXElCapitan/Users/mrdekk/casesafe/.build/x86_64-ubuntu16.04-linux-gnu/build/build-libc-final/multilib/nis/nisplus-alias.os] Error 1
[ERROR] make[3]: *** Waiting for unfinished jobs....
[ERROR] make[2]: *** [nis/others] Error 2
[ERROR] make[1]: *** [all] Error 2
- 1
- 2
- 3
- 4
- 5
- 6
解决方案：
diff --git a/nis/nss_nisplus/nisplus-alias.c b/nis/nss_nisplus/nisplus-alias.c
index 7f698b4e6d..509ace1f83 100644
--- a/nis/nss_nisplus/nisplus-alias.c
+++ b/nis/nss_nisplus/nisplus-alias.c
@@ -297,10 +297,10 @@ _nss_nisplus_getaliasbyname_r (const char *name, struct aliasent *alias,
return NSS_STATUS_UNAVAIL;
}
- char buf[strlen (name) + 9 + tablename_len];
+ char buf[tablename_len + 9];
int olderr = errno;
- snprintf (buf, sizeof (buf), "[name=%s],%s", name, tablename_val);
+ snprintf (buf, sizeof (buf), "[name=],%s", tablename_val);
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
build目录缺少/etc/ld.so.conf
解决方案：
cd etc/
touch ld.so.conf
- 1
- 2
转自:https://blog.wh98.me/2019/03/20/%E7%BC%96%E8%AF%91glibc%E9%81%87%E5%88%B0%E7%9A%84%E9%97%AE%E9%A2%98/
作者:hustcw
参考:
https://blog.csdn.net/qq_40827990/article/details/89295472
gawk '/\.gnu\.glibc-stub\./ { \sub(/\.gnu\.glibc-stub\./, "", $2); \stubs[$2] = 1; } \END { for (s in stubs) print "#define __stub_" s }' > /root/glibc-2.23/glibc-build/math/stubsT gawk: error while loading shared libraries: /lib64/libm.so.6: invalid ELF header make[2]: *** [/root/glibc-2.23/glibc-build/math/stubs] Error 127 make[2]: Leaving directory `/root/glibc-2.23/math' make[1]: *** [math/subdir_install] Error 2 make[1]: Leaving directory `/root/glibc-2.23' make: *** [install] Error 2
解决办法(在另外的窗口执行)：
# cd /lib64
# unlink libm.so.6
# ln -s libm-2.23.so libm.so.6
然后再次执行make install
看到如下信息就是安装成功了
LD_SO=ld-linux-x86-64.so.2 CC="gcc" /usr/bin/perl scripts/test-installation.pl /root/glibc-2.23/glibc-build/
Your new glibc installation seems to be ok.
make[1]: Leaving directory `/root/glibc-2.23'
4、验证
# ldd --version
ldd (GNU libc) 2.23
Copyright (C) 2016 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.
报错：
setenv.c: In function '__unsetenv':
setenv.c:279:6: error: suggest explicit braces to avoid ambiguous 'else' [-Werror=parentheses]
if (ep != NULL)
^
cc1: all warnings being treated as errors
../o-iterator.mk:9: recipe for target '/builddir/build/BUILD/glibc-arm-linux-gnu-2.23/build-arm-linux-gnu-glibc/stdlib/setenv.o' failed
make[2]: *** [/builddir/build/BUILD/glibc-arm-linux-gnu-2.23/build-arm-linux-gnu-glibc/stdlib/setenv.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: Leaving directory '/builddir/build/BUILD/glibc-arm-linux-gnu-2.23/glibc-2.23/stdlib'
Makefile:214: recipe for target 'stdlib/subdir_lib' failed
make[1]: *** [stdlib/subdir_lib] Error 2
make[1]: Leaving directory '/builddir/build/BUILD/glibc-arm-linux-gnu-2.23/glibc-2.23'
Makefile:9: recipe for target 'all' failed
make: *** [all] Error 2
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
原因：
glibc-2.23/nis/nis_call.c与
glibc-2.23/stdlib/setenv.c
大括号缺失
- 1
- 2
- 3
解决方法：
glibc-2.23/nis/nis_call.c
diff -up glibc-arm-linux-gnu-2.23/glibc-2.23/nis/nis_call.c.gcc61 glibc-arm-linux-gnu-2.23/glibc-2.23/nis/nis_call.c
--- glibc-arm-linux-gnu-2.23/glibc-2.23/nis/nis_call.c.gcc61 2016-02-18 18:54:00.000000000 +0100
+++ glibc-arm-linux-gnu-2.23/glibc-2.23/nis/nis_call.c 2016-05-19 18:44:24.288550322 +0200
@@ -680,6 +680,7 @@ nis_server_cache_add (const_nis_name nam
/* Choose which entry should be evicted from the cache. */
loc = &nis_server_cache[0];
if (*loc != NULL)
+ {
for (i = 1; i < 16; ++i)
if (nis_server_cache[i] == NULL)
{
@@ -690,6 +691,7 @@ nis_server_cache_add (const_nis_name nam
|| ((*loc)->uses == nis_server_cache[i]->uses
&& (*loc)->expires > nis_server_cache[i]->expires))
loc = &nis_server_cache[i];
+ }
old = *loc;
*loc = new;
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
glibc-2.23/stdlib/setenv.c
diff -up glibc-arm-linux-gnu-2.23/glibc-2.23/stdlib/setenv.c.gcc61 glibc-arm-linux-gnu-2.23/glibc-2.23/stdlib/setenv.c
--- glibc-arm-linux-gnu-2.23/glibc-2.23/stdlib/setenv.c.gcc61 2016-02-18 18:54:00.000000000 +0100
+++ glibc-arm-linux-gnu-2.23/glibc-2.23/stdlib/setenv.c 2016-05-19 18:41:09.778640989 +0200
@@ -277,6 +277,7 @@ unsetenv (const char *name)
ep = __environ;
if (ep != NULL)
+ {
while (*ep != NULL)
if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
{
@@ -290,6 +291,7 @@ unsetenv (const char *name)
}
else
++ep;
+ }
UNLOCK;
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
