c - 加载共享库时出错，无法打开共享对象文件 : No such file or directory (hiredis)

Question

我正处于编写后端使用 redis 的 C 程序的 alpha 阶段。

我已经尝试构建/安装 hiredis(make && sudo make install)并运行测试(大部分通过)但是在尝试构建 example.c 时程序出现找不到 hiredis.h 的错误。

在命令行上构建:gcc -v example.c -l hiredis -I/usr/local/include/hiredis/

我尝试过的事情:

1. pkg-info hiredis 返回 0
2. 通过 (make && ./hiredis-test && sudo make) 和 (make clean) 卸载/重新安装
3. 在与 hiredis.c 和 hiredis.h 相同的目录中构建 example.c(仍然没有这样的文件或目录)
4. gcc -v example.c -l hiredis -I/usr/local/include/hiredis/(以及其他变体)

都没有运气。

我猜我没有为 gcc 正确链接程序，但文档没有任何构建示例。

我做错了什么，不允许我使用 hiredis 构建此代码(或任何代码)？

准确的输出是...

     Using built-in specs.
Target: x86_64-redhat-linux
Configured with: ../configure --prefix=/usr --mandir=/usr/share/man --infodir=/usr/share/info --with-bugurl=http://bugzilla.redhat.com/bugzilla --enable-bootstrap --enable-shared --enable-threads=posix --enable-checking=release --with-system-zlib --enable-__cxa_atexit --disable-libunwind-exceptions --enable-gnu-unique-object --enable-languages=c,c++,objc,obj-c++,java,fortran,ada --enable-java-awt=gtk --disable-dssi --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-1.5.0.0/jre --enable-libgcj-multifile --enable-java-maintainer-mode --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --disable-libjava-multilib --with-ppl --with-cloog --with-tune=generic --with-arch_32=i686 --build=x86_64-redhat-linux
Thread model: posix
gcc version 4.4.7 20120313 (Red Hat 4.4.7-16) (GCC) 
COLLECT_GCC_OPTIONS='-v' '-I' '/usr/local/include/hiredis/' '-mtune=generic'
 /usr/libexec/gcc/x86_64-redhat-linux/4.4.7/cc1 -quiet -v -I /usr/local/include/hiredis/ example.c -quiet -dumpbase example.c -mtune=generic -auxbase example -version -o /tmp/ccWP2etT.s
ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.4.7/include-fixed"
ignoring nonexistent directory "/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../x86_64-redhat-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include/hiredis/
 /usr/local/include
 /usr/lib/gcc/x86_64-redhat-linux/4.4.7/include
 /usr/include
End of search list.
GNU C (GCC) version 4.4.7 20120313 (Red Hat 4.4.7-16) (x86_64-redhat-linux)
        compiled by GNU C version 4.4.7 20120313 (Red Hat 4.4.7-16), GMP version 4.3.1, MPFR version 2.4.1.
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 8fd7a5b48f606b047c876a297c82f28e
COLLECT_GCC_OPTIONS='-v' '-I' '/usr/local/include/hiredis/' '-mtune=generic'
 as -V -Qy -o /tmp/ccnscL6h.o /tmp/ccWP2etT.s
GNU assembler version 2.20.51.0.2 (x86_64-redhat-linux) using BFD version version 2.20.51.0.2-5.43.el6 20100205
COMPILER_PATH=/usr/libexec/gcc/x86_64-redhat-linux/4.4.7/:/usr/libexec/gcc/x86_64-redhat-linux/4.4.7/:/usr/libexec/gcc/x86_64-redhat-linux/:/usr/lib/gcc/x86_64-redhat-linux/4.4.7/:/usr/lib/gcc/x86_64-redhat-linux/:/usr/libexec/gcc/x86_64-redhat-linux/4.4.7/:/usr/libexec/gcc/x86_64-redhat-linux/:/usr/lib/gcc/x86_64-redhat-linux/4.4.7/:/usr/lib/gcc/x86_64-redhat-linux/
LIBRARY_PATH=/usr/lib/gcc/x86_64-redhat-linux/4.4.7/:/usr/lib/gcc/x86_64-redhat-linux/4.4.7/:/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-I' '/usr/local/include/hiredis/' '-mtune=generic'
 /usr/libexec/gcc/x86_64-redhat-linux/4.4.7/collect2 --eh-frame-hdr --build-id -m elf_x86_64 --hash-style=gnu -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/crt1.o /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/crti.o /usr/lib/gcc/x86_64-redhat-linux/4.4.7/crtbegin.o -L/usr/lib/gcc/x86_64-redhat-linux/4.4.7 -L/usr/lib/gcc/x86_64-redhat-linux/4.4.7 -L/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64 -L/lib/../lib64 -L/usr/lib/../lib64 -L/usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../.. /tmp/ccnscL6h.o -lhiredis -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /usr/lib/gcc/x86_64-redhat-linux/4.4.7/crtend.o /usr/lib/gcc/x86_64-redhat-linux/4.4.7/../../../../lib64/crtn.o

产生 a.out。尝试运行该程序时。我收到以下错误。

./a.out: error while loading shared libraries: libhiredis.so.0.13: cannot open shared object file: No such file or directory

Answer 1

问题是 libhiredis 不在 ldconfig 路径中​​。虽然构建过程是正确的并将所有内容复制到正确的目录，但 ldconfig 不知道其位置。

您可以使用 ldconfig -p 查看 ldconfig 当前知道的所有库。

您可以将路径添加到 ldconfig 中

sudo echo "/usr/local/lib">/etc/ld.so.conf.d/local.conf

&

sudo ldconfig