如何用PostgreSQL构建套接字？
如何用PostgreSQL构建套接字？
提问于 2016-02-14 14:13:24
我正在尝试构建与PostgreSQL一起运行的SOCI库。我遵循了以下步骤：
- 在Ubutu15.10中安装PostgreSQL
- 下载SOCI源代码
- 提取套接字码
然后运行以下命令：
mkdir build
cd build
cmake -G "Unix Makefiles" -DWITH_BOOST=OFF -DWITH_POSTGRESQL=ON -DPOSTGRESQL_INCLUDE_DIR=/usr/local/pgsql/include -DPOSTGRESQL_LIBRARIES=/usr/local/pgsql/lib ../soci此时，CMake发出了以下警告：
WARNING: Target "soci_postgresql" requests linking to directory "/usr/local/pgsql/lib". Targets may link only to libraries. CMake is dropping the item.
WARNING: Target "soci_postgresql_static" requests linking to directory "/usr/local/pgsql/lib". Targets may link only to libraries. CMake is dropping the item.
WARNING: Target "soci_postgresql_test" requests linking to directory "/usr/local/pgsql/lib". Targets may link only to libraries. CMake is dropping the item.
WARNING: Target "soci_postgresql_test" requests linking to directory "/usr/local/pgsql/lib". Targets may link only to libraries. CMake is dropping the item.
WARNING: Target "soci_postgresql_test_static" requests linking to directory "/usr/local/pgsql/lib". Targets may link only to libraries. CMake is dropping the item.
WARNING: Target "soci_postgresql_test_static" requests linking to directory "/usr/local/pgsql/lib". Targets may link only to libraries. CMake is dropping the item.在坚持构建时，我运行了make，如果出现以下错误，它就会失败：
[ 98%] Building CXX object tests/postgresql/CMakeFiles/soci_postgresql_test.dir/test-postgresql.cpp.o
Linking CXX executable ../../bin/soci_postgresql_test
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQresultStatus'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQgetvalue'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQclear'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQserverVersion'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQresultErrorMessage'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQexec'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `lo_lseek'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQfsize'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQgetisnull'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQerrorMessage'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `lo_open'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQexecPrepared'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQftype'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `lo_close'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQexecParams'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQfname'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQconnectdb'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQstatus'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQntuples'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQresultErrorField'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQfformat'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `lo_read'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQfinish'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQprepare'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `lo_write'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQcmdTuples'
../../lib/libsoci_postgresql.so.4.0.0: undefined reference to `PQnfields'
collect2: error: ld returned 1 exit status
tests/postgresql/CMakeFiles/soci_postgresql_test.dir/build.make:89: recipe for target 'bin/soci_postgresql_test' failed
make[2]: *** [bin/soci_postgresql_test] Error 1
CMakeFiles/Makefile2:609: recipe for target 'tests/postgresql/CMakeFiles/soci_postgresql_test.dir/all' failed
make[1]: *** [tests/postgresql/CMakeFiles/soci_postgresql_test.dir/all] Error 2
Makefile:126: recipe for target 'all' failed
make: *** [all] Error 2知道CMake警告和构建错误的原因是什么吗？
回答 2
Stack Overflow用户
发布于 2016-03-01 20:09:25
尝试用稍微不同的选项调用cmake
cmake -G "Unix Makefiles" -DWITH_BOOST=OFF -DWITH_POSTGRESQL=ON \
-DPOSTGRESQL_INCLUDE_DIR:STRING="/usr/local/pgsql/include" \
-DPOSTGRESQL_LIBRARIES:STRING="/usr/local/pgsql/lib" ../sociStack Overflow用户
发布于 2017-07-06 07:35:34
我从github那里得到了正确的答案，这是链接。以下答复基本上是从那里得到的，但为了方便起见，在此重复(附有清理和澄清)：
-DPOSTGRESQL_LIBRARIES=/usr/local/psql/lib应该指向库，而不是目录。
以下警告已经强调了这一点：
警告:目标"soci_postgresql“请求链接到目录"/usr/local/postgresql/lib”
尝试下面的命令(您可能需要首先从构建目录中删除CMakeCache.txt )：
cmake -G "Unix Makefiles" -DWITH_BOOST=OFF -DWITH_POSTGRESQL=ON ../soci在安装了"postgresql-devel.x86_64 : PostgreSQL development header files and libraries"的Linux系统上，这个命令应该足够了。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/35392767
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