关于【gcc】的问题- 第1页

Jinja_dude

Asked: 2021-03-31 04:06:27 +0800 CST

Ansible 运行分析工具：使用 pip3 安装 mysqlclient 时出现异常

5

我想使用带有 ARA 的 mysql 引擎/数据库，而不是工具附带的默认 sqlite 引擎，以便为多个条目提供更强大的引擎，但我面临的问题不允许我在下面实现这一点细节：

当我在我的 ARA 服务器的 settings.yml 文件中指定 mysql 引擎时，出现以下错误：

~/.ara/server # [ara] Using settings file: /root/.ara/server/settings.yaml
Traceback (most recent call last):
  File "/root/.local/lib/python3.8/site-packages/ara/server/__main__.py", line 54, in main
    import MySQLdb  # noqa
ModuleNotFoundError: No module named 'MySQLdb'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/root/.local/bin/ara-manage", line 8, in <module>
    sys.exit(main())
  File "/root/.local/lib/python3.8/site-packages/ara/server/__main__.py", line 56, in main
    raise MissingMysqlclientException from e
ara.setup.exceptions.MissingMysqlclientException: The mysqlclient python library must be installed in order to use the MySQL database engine.

所以我检查了是否安装了 mysqlclient 并且显然没有安装：

~/.ara/server # pip3 list installed | grep mysql

但是当我尝试安装它时，我有这个巨大的异常块：


~/.ara/server # pip3.8 install mysqlclient
Collecting mysqlclient
  Using cached mysqlclient-2.0.3.tar.gz (88 kB)
Building wheels for collected packages: mysqlclient
  Building wheel for mysqlclient (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/setup.py'"'"'; __file__='"'"'/tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-lm119tma
       cwd: /tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/
  Complete output (41 lines):
  mysql_config --version
  ['10.5.5']
  mysql_config --libs
  ['-L/usr/lib/', '-lmariadb']
  mysql_config --cflags
  ['-I/usr/include/mysql', '-I/usr/include/mysql/mysql']
  ext_options:
    library_dirs: ['/usr/lib/']
    libraries: ['mariadb']
    extra_compile_args: ['-std=c99']
    extra_link_args: []
    include_dirs: ['/usr/include/mysql', '/usr/include/mysql/mysql']
    extra_objects: []
    define_macros: [('version_info', "(2,0,3,'final',0)"), ('__version__', '2.0.3')]
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-x86_64-3.8
  creating build/lib.linux-x86_64-3.8/MySQLdb
  copying MySQLdb/__init__.py -> build/lib.linux-x86_64-3.8/MySQLdb
  copying MySQLdb/_exceptions.py -> build/lib.linux-x86_64-3.8/MySQLdb
  copying MySQLdb/connections.py -> build/lib.linux-x86_64-3.8/MySQLdb
  copying MySQLdb/converters.py -> build/lib.linux-x86_64-3.8/MySQLdb
  copying MySQLdb/cursors.py -> build/lib.linux-x86_64-3.8/MySQLdb
  copying MySQLdb/release.py -> build/lib.linux-x86_64-3.8/MySQLdb
  copying MySQLdb/times.py -> build/lib.linux-x86_64-3.8/MySQLdb
  creating build/lib.linux-x86_64-3.8/MySQLdb/constants
  copying MySQLdb/constants/__init__.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
  copying MySQLdb/constants/CLIENT.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
  copying MySQLdb/constants/CR.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
  copying MySQLdb/constants/ER.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
  copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
  copying MySQLdb/constants/FLAG.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
  running build_ext
  building 'MySQLdb._mysql' extension
  creating build/temp.linux-x86_64-3.8
  creating build/temp.linux-x86_64-3.8/MySQLdb
  gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fomit-frame-pointer -g -fno-semantic-interposition -fomit-frame-pointer -g -fno-semantic-interposition -fomit-frame-pointer -g -fno-semantic-interposition -DTHREAD_STACK_SIZE=0x100000 -fPIC -Dversion_info=(2,0,3,'final',0) -D__version__=2.0.3 -I/usr/include/mysql -I/usr/include/mysql/mysql -I/usr/include/python3.8 -c MySQLdb/_mysql.c -o build/temp.linux-x86_64-3.8/MySQLdb/_mysql.o -std=c99
  unable to execute 'gcc': No such file or directory
  error: command 'gcc' failed with exit status 1
  ----------------------------------------
  ERROR: Failed building wheel for mysqlclient
  Running setup.py clean for mysqlclient
Failed to build mysqlclient
Installing collected packages: mysqlclient
    Running setup.py install for mysqlclient ... error
    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/setup.py'"'"'; __file__='"'"'/tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-ksqr0pbp/install-record.txt --single-version-externally-managed --compile --install-headers /usr/include/python3.8/mysqlclient
         cwd: /tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/
    Complete output (41 lines):
    mysql_config --version
    ['10.5.5']
    mysql_config --libs
    ['-L/usr/lib/', '-lmariadb']
    mysql_config --cflags
    ['-I/usr/include/mysql', '-I/usr/include/mysql/mysql']
    ext_options:
      library_dirs: ['/usr/lib/']
      libraries: ['mariadb']
      extra_compile_args: ['-std=c99']
      extra_link_args: []
      include_dirs: ['/usr/include/mysql', '/usr/include/mysql/mysql']
      extra_objects: []
      define_macros: [('version_info', "(2,0,3,'final',0)"), ('__version__', '2.0.3')]
    running install
    running build
    running build_py
    creating build
    creating build/lib.linux-x86_64-3.8
    creating build/lib.linux-x86_64-3.8/MySQLdb
    copying MySQLdb/__init__.py -> build/lib.linux-x86_64-3.8/MySQLdb
    copying MySQLdb/_exceptions.py -> build/lib.linux-x86_64-3.8/MySQLdb
    copying MySQLdb/connections.py -> build/lib.linux-x86_64-3.8/MySQLdb
    copying MySQLdb/converters.py -> build/lib.linux-x86_64-3.8/MySQLdb
    copying MySQLdb/cursors.py -> build/lib.linux-x86_64-3.8/MySQLdb
    copying MySQLdb/release.py -> build/lib.linux-x86_64-3.8/MySQLdb
    copying MySQLdb/times.py -> build/lib.linux-x86_64-3.8/MySQLdb
    creating build/lib.linux-x86_64-3.8/MySQLdb/constants
    copying MySQLdb/constants/__init__.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
    copying MySQLdb/constants/CLIENT.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
    copying MySQLdb/constants/CR.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
    copying MySQLdb/constants/ER.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
    copying MySQLdb/constants/FIELD_TYPE.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
    copying MySQLdb/constants/FLAG.py -> build/lib.linux-x86_64-3.8/MySQLdb/constants
    running build_ext
    building 'MySQLdb._mysql' extension
    creating build/temp.linux-x86_64-3.8
    creating build/temp.linux-x86_64-3.8/MySQLdb
    gcc -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fomit-frame-pointer -g -fno-semantic-interposition -fomit-frame-pointer -g -fno-semantic-interposition -fomit-frame-pointer -g -fno-semantic-interposition -DTHREAD_STACK_SIZE=0x100000 -fPIC -Dversion_info=(2,0,3,'final',0) -D__version__=2.0.3 -I/usr/include/mysql -I/usr/include/mysql/mysql -I/usr/include/python3.8 -c MySQLdb/_mysql.c -o build/temp.linux-x86_64-3.8/MySQLdb/_mysql.o -std=c99
    unable to execute 'gcc': No such file or directory
    error: command 'gcc' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/setup.py'"'"'; __file__='"'"'/tmp/pip-install-oq1ay19g/mysqlclient_f0ad3d21508f4b698b4bfb4e7c70b25d/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-ksqr0pbp/install-record.txt --single-version-externally-managed --compile --install-headers /usr/include/python3.8/mysqlclient Check the logs for full command output.

如果我理解错误，则由于缺少 gcc 存在编译问题。但是当我尝试使用 pip 卸载 gcc7 时它不起作用：

~/.ara/server # pip3 install gcc7
ERROR: Could not find a version that satisfies the requirement gcc7
ERROR: No matching distribution found for gcc7

1-我的分析对吗？

2-这背后的真正问题是什么？我的意思是还有其他可能导致此问题的依赖项。任何帮助或提示将不胜感激。

PS：我正在研究高山分布。

Harry Kruger

Asked: 2019-08-24 10:06:56 +0800 CST

使用 gcc 编译 c 代码时访问被拒绝

5

我编译了我的 c 程序gcc -c -o test.exe test.c 并且编译没有错误然后当我运行它时给出Access is denied.

这是我的代码

#include <stdio.h>
int main()
{
    printf("Hello, World!");
    return 0;
}

Phil Turner

Asked: 2019-06-11 13:29:24 +0800 CST

为什么我构建的 gcc 不支持共享库

5

我在 Debian Wheezy 主机上的 Debian Lenny chroot 中构建了 gcc-4.9.0。拱门 = Armel（Wheezy 和 Lenny）。我使用了以下配置选项：

$PWD/../gcc-4.9.0/configure --prefix=/usr/local/GCC-4.9.0 --enable-languages=c,c++ --with-arch=armv4t --with-float=soft --enable-checking=release --enable-shared --build=arm-linux-gnueabi --host=arm-linux-gnueabi --target=arm-linux-gnueabi LDFLAGS=-Wl,-no-keep-memory --disable-libjava

当我尝试构建一些库（本例中为 libgcrypt）时，我无法构建共享库：

checking whether the /usr/local/GCC-4.9.0/bin/gcc linker (/usr/local/GCC-4.9.0/bin/gcc) supports shared libraries... no
checking dynamic linker characteristics... GNU/Linux ld.so
checking how to hardcode library paths into programs... unsupported
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... no
checking whether to build shared libraries... no
checking whether to build static libraries... yes`

对于卷曲：

gcc: error: ../lib/.libs/libcurl.so: No such file or directory
make[2]: *** [Makefile:923: curl] Error 1

构建 gcc 时我是否仍然缺少一些配置选项？

maxbachmann

Asked: 2019-05-02 18:50:49 +0800 CST

缺少 gcc 编译器警告标志

5

我想使用https://gcc.gnu.org/onlinedocs/gcc/Warning-Options.html上列出的一些警告标志。然而，我似乎不能全部使用它们。例如-Wpessimizing-move，gcc 无法识别我（总是生成错误，因为此选项不存在）。很多标志都存在这个问题。我使用 fedora 存储库中的 gcc 这就是我的版本输出：

Es werden eingebaute Spezifikationen verwendet.
COLLECT_GCC=/usr/bin/gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-redhat-linux/8/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Ziel: x86_64-redhat-linux
Konfiguriert mit: ../configure --enable-bootstrap --enable-languages=c,c++,fortran,objc,obj-c++,ada,go,lto --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-shared --enable-threads=posix --enable-checking=release --enable-multilib --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-linker-build-id --with-gcc-major-version-only --with-linker-hash-style=gnu --enable-plugin --enable-initfini-array --with-isl --enable-libmpx --enable-offload-targets=nvptx-none --without-cuda-driver --enable-gnu-indirect-function --enable-cet --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread-Modell: posix
gcc-Version 8.3.1 20190223 (Red Hat 8.3.1-2) (GCC)

gcc 和 g++ 都会出现同样的错误。这种行为的原因可能是什么？以及如何解决？

Richard

Asked: 2019-04-23 22:28:35 +0800 CST

命令未找到...错误 (Fedora 29)

7

我正在学习关于 lex 和 yacc 的教程，该教程要求我编译一些 C 源代码。本教程要求我在终端中输入以下行：

$ gcc ‑o exampleA lex.yy.c ‑lfl

但我随后收到消息：

bash: $: command not found...

我尝试使用更简单的 HelloWorld C 源代码文件，但得到了相同的消息。

但我知道 gcc 可执行文件位于 /usr/bin 中，当我在终端中键入“gcc --version”或“gcc --help”时，我会得到一个合理的响应。

这里发生了什么？

顺便说一句，我正在使用 Fedora 29 Linux 发行版。

Ansible 运行分析工具：使用 pip3 安装 mysqlclient 时出现异常

使用 gcc 编译 c 代码时访问被拒绝

为什么我构建的 gcc 不支持共享库

缺少 gcc 编译器警告标志

命令未找到...错误 (Fedora 29)

如何减少“vmmem”进程的消耗？

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问题[gcc](computer)