Ubuntu14.04编译Allwinner lichee 两个出错解决方法
1.host-m4-1.4.15
In file includedfrom clean-temp.h:22:0,
from clean-temp.c:23:
./stdio.h:456:1:error: 'gets' undeclared here (not in a function)
_GL_WARN_ON_USE(gets, "gets is a security hole - use fgets instead");
解决方法：参考链接：
http://www.civilnet.cn/talk/browse.php?topicno=78555，2楼.
找到：host-m4-1.4.15/lib/stdio.h，然后对stdio.h文件做出如下改动，必要时连同stdio.in.h一起修改：
<span style="font-family:Arial;font-size:12px;"># Begin patch
=== modified file 'grub-core/gnulib/stdio.in.h'
--- grub-core/gnulib/stdio.in.h 2010-09-20 10:35:33 +0000
+++ grub-core/gnulib/stdio.in.h 2012-07-04 15:18:15 +0000
@@ -140,8 +140,10 @@
/* It is very rare that the developer ever has full control of stdin,
so any use of gets warrants an unconditional warning. Assume it is
always declared, since it is required by C89. */
+#if defined gets
#undef gets
_GL_WARN_ON_USE (gets, "gets is a security hole - use fgets instead");
+#endif
2.host-autoconf-2.65
conftest.c:14625:must be after `@defmac' to use `@defmacx'
make[3]: ***[autoconf.info] Error 1
make[3]: Leavingdirectory`//opt/Android/a23androidSRC/lichee/out/linux/common/buildroot/build/host-autoconf-2.65/doc'
make[2]: ***[install-recursive] Error 1
make[2]: Leavingdirectory`/opt/Android/a23androidSRC/lichee/out/linux/common/buildroot/build/host-autoconf-2.65'
make[1]: ***[install] Error 2
make[1]: Leavingdirectory`/opt/Android/a23androidSRC/lichee/out/linux/common/buildroot/build/host-autoconf-2.65'
make: ***[/opt/Android/a23androidSRC/lichee/out/linux/common/buildroot/build/host-autoconf-2.65/.stamp_host_installed]Error 2
解决方法如下：
参考链接：
http://gnu-autoconf.7623.n7.nabble.com/compile-error-conftest-c-14625-must-be-after-defmac-to-use-defmacx-td18843.html
2楼有个补丁文件：
--- autoconf-2.65/doc/autoconf.texi 2009-11-05 10:42:15.000000000 +0800
+++ autoconf-2.65/doc/autoconf.texi.new 2013-05-28 05:41:09.243770263 +0800
@@ -15,7 +15,7 @@
@c The ARG is an optional argument. To be used for macro arguments in
@c their documentation (@defmac).
@macro ovar{varname}
-@r{[}@var{\varname\}@r{]}@c
+@r{[}@var{\varname\}@r{]}
@end macro
@c @dvar(ARG, DEFAULT)
@@ -23,7 +23,7 @@
@c The ARG is an optional argument, defaulting to DEFAULT. To be used
@c for macro arguments in their documentation (@defmac).
@macro dvar{varname, default}
-@r{[}@var{\varname\} = @samp{\default\}@r{]}@c
+@r{[}@var{\varname\} = @samp{\default\}@r{]}
@end macro
@c Handling the indexes with Texinfo yields several different problems.
根据这个补丁文件修改即可，直接修改源代码包，下次编译就不会再提示这个错误了。
3.host-makedevs
/opt/Android/a23androidSRC/lichee/out/linux/common/buildroot/build/host-makedevs/makedevs.c:374:6: error: variable ‘ret’ set but not used [-Werror=unused-but-set-variable]
int ret = EXIT_SUCCESS;
^
cc1: all warnings being treated as errors
直接修改makedevs.c文件：
最后一行，return 0;
修改为：return ret;
源代码位置：./buildroot/package/makedevs/makedevs.c