Ubuntu18.04下编译OpenWRT15.05遇到的问题和解决方案

最近,OpenWRT开发主战场,从ubuntu16.04 LTS 虚拟机环境迁移到了ubuntu18.04LTS,水土不服,各种不适。不多说,折腾!!!

1. 初检git出错

依赖提示 Please install Git (git-core) >= 1.6.5

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➜  openwrt git:(master) ✗ make menuconfig
Checking 'working-make'... ok.
.
.
.
Checking 'svn'... ok.
Checking 'git'... failed.
Checking 'file'... ok.
Checking 'openssl'... ok.
Checking 'ldconfig-stub'... ok.

Build dependency: Please install Git (git-core) >= 1.6.5

/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/include/prereq.mk:12: recipe for target 'prereq' failed
Prerequisite check failed. Use FORCE=1 to override.
/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/include/toplevel.mk:140: recipe for target 'staging_dir/host/.prereq-build' failed
make: *** [staging_dir/host/.prereq-build] Error 1

明明已经安装了git,却提示我们安装git,只是openwrt里面prereq-build.mk的一个bug,可以通过打patch的方法来修复它。

解决方案

进到xxx/chaos_calmer/include目录,就是toplevel.mk所在的目录。

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wget https://gitlab.labs.nic.cz/turris/openwrt/uploads/0673001b14ab1d1769604ff0ce7d8781/git-version-check-fix.patch
patch < git-version-check-fix.patch

回到openwrt根目录,再次检查依赖,发现没,没有问题了。

2. gdate.c错误

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gdate.c: In function 'g_date_strftime':
tmplen = strftime (tmpbuf, tmpbufsize, locale_format, &tm);
^~~~~~

解决方案

单独改源码方式不好,下次重新编译有可能又要重新改, 所以新建个patch一劳永逸.

在tools/pkg-config/目录下创建目录patches并在patches目录中新建文件 001-glib-gdate-suppress-string-format-literal-warning.patch

内容如下:

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--- a/glib/glib/gdate.c
+++ b/glib/glib/gdate.c
@@ -2439,6 +2439,9 @@ win32_strftime_helper (const GDate *d,
*
* Returns: number of characters written to the buffer, or 0 the buffer was too small
*/
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wformat-nonliteral"
+
gsize
g_date_strftime (gchar *s,
gsize slen,
@@ -2549,3 +2552,5 @@ g_date_strftime (gchar *s,
return retval;
#endif
}
+
+#pragma GCC diagnostic pop

3. automake错误,与perl版本有关

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Makefile:50: recipe for target '/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/build_dir/host/automake-1.15/.configured' failed
make[3]: *** [/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/build_dir/host/automake-1.15/.configured] Error 255
make[3]: Leaving directory '/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/tools/automake'
tools/Makefile:122: recipe for target 'tools/automake/compile' failed
make[2]: *** [tools/automake/compile] Error 2
make[2]: Leaving directory '/home/ubuntu/buildbot/compex/chaos_calmer/openwrt'
tools/Makefile:121: recipe for target '/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/staging_dir/target-mips_34kc_uClibc-0.9.33.2/stamp/.tools_install_yynyynynynyyyyyyyyyyyyyyyyyyynyyyyynnyyynyyynnnyy' failed
make[1]: *** [/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/staging_dir/target-mips_34kc_uClibc-0.9.33.2/stamp/.tools_install_yynyynynynyyyyyyyyyyyyyyyyyyynyyyyynnyyynyyynnnyy] Error 2
make[1]: Leaving directory '/home/ubuntu/buildbot/compex/chaos_calmer/openwrt'
/home/ubuntu/buildbot/compex/chaos_calmer/openwrt/include/toplevel.mk:181: recipe for target 'world' failed
make: *** [world] Error 2

原因

查看perl版本

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perl -v
This is perl 5, version 26, subversion 1 (v5.26.1) built for x86_64-linux-gnu-thread-multi

新版本perl对一些写法不支持,需要增加一个插件

解决办法

tools/automake/patchs/ 目录下创建新文件 210_automake_perl_5.26.1_ver.patch

内容如下:

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diff --git a/bin/automake.in b/bin/automake.in
index a3a0aa318..2c8f31e14 100644
--- a/bin/automake.in
+++ b/bin/automake.in
@@ -3878,7 +3878,7 @@ sub substitute_ac_subst_variables_worker
sub substitute_ac_subst_variables
{
my ($text) = @_;
- $text =~ s/\${([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
+ $text =~ s/\$[{]([^ \t=:+{}]+)}/substitute_ac_subst_variables_worker ($1)/ge;
return $text;
}

4. gcc版本问题

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include/linux/compiler-gcc.h:114:1: fatal error: linux/compiler-gcc7.h: No such file or directory
#include gcc_header(__GNUC__)

原因

ubuntu18.04默认安装的gcc版本较高,为gcc7;

解决方案

参考https://github.com/openwrt/openwrt/blob/70b104f98c0657323b28fce140b73a94bf3eb756/tools/mkimage/patches/200-compiler-support.patch

给mkimage打个patch,

tools/mkimage/patches/ 目录下wget 200-compiler-support.patch

如下:

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wget https://raw.githubusercontent.com/openwrt/openwrt/70b104f98c0657323b28fce140b73a94bf3eb756/tools/mkimage/patches/200-compiler-support.patch

5. 模块 mkimage(u-boot-2014.10) 出错

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u-boot-2014.10/lib/rsa/rsa-sign.c:279:21: error: dereferencing pointer to incomplete type 'RSA {aka struct rsa_st}'
if (BN_num_bits(key->e) > 64)

原因

OpenSSL版本是1.1x,OpenSSL 1.1.x对一些API做了改动,因此出现错误信息。

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➜  openssl version
OpenSSL 1.1.1 11 Sep 2018

解决方法

参考https://github.com/openwrt/openwrt/commit/70b104f98c0657323b28fce140b73a94bf3eb756

tools/mkimage/patches/ 目录下wget 210-openssl-1.1.x-compat.patch

如下:

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wget https://raw.githubusercontent.com/openwrt/openwrt/70b104f98c0657323b28fce140b73a94bf3eb756/tools/mkimage/patches/210-openssl-1.1.x-compat.patch

6. gcc4.8编译出错

到这一步,一些哥们干脆把系统gcc降级回到gcc4.8,解决问题。坚决不妥协,继续。。。

解决方案

添加条件编译宏定义

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#ifdef __GNUC_STDC_INLINE__
__attribute__ ((__gnu_inline__))
#endif

到目录openwrt/build_dir/toolchain-mips_34kc_gcc-4.8-linaro_uClibc-0.9.33.2/gcc-linaro-4.8-2014.04/gcc/cp/下的cfns.gperf(25行)和cfns.h文件(50行)如下

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#ifdef __GNUC__
__inline
#endif
static unsigned int hash (const char *, unsigned int);
#ifdef __GNUC__
__inline
#ifdef __GNUC_STDC_INLINE__
__attribute__ ((__gnu_inline__))
#endif
#endif
const char * libc_name_p (const char *, unsigned int);

7. 编译coccinelle-1.0.0-rc24c出错

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/usr/bin/ld: /home/ubuntu/buildbot/ipq40xx_qca/staging_dir/host/lib/libpython2.7.a(bytes_methods.o): relocation R_X86_64_32S against symbol `_Py_ctype_table' can not be used when making a shared object; recompile with -fPIC
/usr/bin/ld: final link failed: Nonrepresentable section on output
collect2: error: ld returned 1 exit status
Makefile:46: recipe for target 'dllpycaml_stubs.so' failed
make[10]: *** [dllpycaml_stubs.so] Error 2
make[10]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24/bundles/pycaml'
Makefile:26: recipe for target 'all' failed
make[9]: *** [all] Error 2
make[9]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24/bundles/pycaml'
Makefile:271: recipe for target '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24/bundles/pycaml/.all' failed
make[8]: *** [/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24/bundles/pycaml/.all] Error 2
make[8]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24'
Makefile:265: recipe for target 'subdirs.all' failed
make[7]: *** [subdirs.all] Error 1
make[7]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24'
Makefile:177: recipe for target 'byte' failed
make[6]: *** [byte] Error 2
make[6]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24'
Makefile:157: recipe for target 'all-dev' failed
make[5]: *** [all-dev] Error 2
make[5]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24'
Makefile:142: recipe for target 'all' failed
make[4]: *** [all] Error 2
make[4]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24'
Makefile:21: recipe for target '/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24/.built' failed
make[3]: *** [/home/ubuntu/buildbot/ipq40xx_qca/build_dir/host/coccinelle-coccinelle-1.0.0-rc24/.built] Error 2
make[3]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca/tools/coccinelle'
tools/Makefile:124: recipe for target 'tools/coccinelle/compile' failed
make[2]: *** [tools/coccinelle/compile] Error 2
make[2]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca'
tools/Makefile:123: recipe for target '/home/ubuntu/buildbot/ipq40xx_qca/staging_dir/target-arm_cortex-a7_uClibc-1.0.14_eabi/stamp/.tools_install_yynyynyynynyyyyyyyyynyyyyyyyyynyyyyynnyyyynnyynnnyy' failed
make[1]: *** [/home/ubuntu/buildbot/ipq40xx_qca/staging_dir/target-arm_cortex-a7_uClibc-1.0.14_eabi/stamp/.tools_install_yynyynyynynyyyyyyyyynyyyyyyyyynyyyyynnyyyynnyynnnyy] Error 2
make[1]: Leaving directory '/home/ubuntu/buildbot/ipq40xx_qca'
/home/ubuntu/buildbot/ipq40xx_qca/include/toplevel.mk:186: recipe for target 'world' failed
make: *** [world] Error 2

原因

coccinelle-coccinelle-1.0.0-rc21对应ocaml 4.02.3

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➜  tools ocaml -version
The OCaml toplevel, version 4.05.0

系统ocaml的版本太高,将ocaml降到4.02.3,就可以解决。

解决方案

安装opam

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add-apt-repository ppa:avsm/ppa
apt update
apt install opam

初始化,并安装 ocaml 4.02.3

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# environment setup
opam init
eval `opam env`
# install given version of the compiler
opam switch create 4.02.3
eval `opam env`
# check you got what you want
which ocaml
ocaml -version

Enjoy!

附 gcc多版本切换方法

Ubuntu18.04操作系统默认预装GCC 7.3版本,不过有时候在编译时是需要用不同gcc的版本,本文介绍怎样安装不同的gcc和g++,并设置根据不同的需要在不同版本之间转换。

1、可以通过如下命令查看当前安装的版本:

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ll /usr/bin/gcc*

将ubuntu-toolchain-r/test PPA添加到您的系统

sudo add-apt-repository ppa:ubuntu-toolchain-r/test

2、安装gcc-4.8和gcc-5.2:

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sudo apt install gcc-4.8 gcc-4.8-multilib g++-4.8 g++-4.8-multilib

sudo apt install gcc-5 gcc-5-multilib g++-5 g++-5-multilib

3、使用update-alternatives设置gcc和g++:

update-alternatives是ubuntu系统中专门维护系统命令链接符的工具,通过它可以很方便的设置系统默认使用哪个命令、哪个软件版本。

其中40 ,50 ,70是优先级数值可以自己设定,–slave能保证gcc和g++保持相同的版本。

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sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 40 --slave /usr/bin/g++ g++ /usr/bin/g++-4.8
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-5 50 --slave /usr/bin/g++ g++ /usr/bin/g++-5
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 70 --slave /usr/bin/g++ g++ /usr/bin/g++-7

4、使用如下命令选择gcc的版本:

运行如下命令:

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sudo update-alternatives --config gcc

可以看到当前gcc默认的版本是gcc-7,下面我们修改为gcc-4.8,直接选择编号即可。

5、验证是否修改成功,运行命令:

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gcc -v
g++ -v

6、删除的方法

删除某个gcc版本的选项的话,可以使用命令:

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sudo update-alternatives --remove gcc /usr/bin/*(*为gcc版本号,比如gcc-4.8)

再使用apt-remove删除即可。

文章目录
  1. 1. 1. 初检git出错
    1. 1.1. 解决方案
  2. 2. 2. gdate.c错误
    1. 2.1. 解决方案
  3. 3. 3. automake错误,与perl版本有关
    1. 3.1. 原因
    2. 3.2. 解决办法
  4. 4. 4. gcc版本问题
    1. 4.1. 原因
    2. 4.2. 解决方案
  5. 5. 5. 模块 mkimage(u-boot-2014.10) 出错
    1. 5.1. 原因
    2. 5.2. 解决方法
  6. 6. 6. gcc4.8编译出错
    1. 6.1. 解决方案
  7. 7. 7. 编译coccinelle-1.0.0-rc24c出错
    1. 7.1. 原因
    2. 7.2. 解决方案
  8. 8. Enjoy!
  9. 9. 附 gcc多版本切换方法
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