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ld 在它前面找不到图书馆

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ld 在它前面找不到图书馆

我正在尝试构建一个涉及 on 的 Rust 程序diesel，postgresql但Fedora 31构建失败，因为链接器找不到libpq.由于它可以用 重现gcc，因此我使用它gcc来缩短问题。

gcc -L /lib64 -lpq
/usr/bin/ld: cannot find -lpq

ls /lib64 | grep libpq
libpq.so.5
libpq.so.5.11

ldd /lib64/libpq.so.5
        linux-vdso.so.1 (0x00007ffc06ddd000)
        libssl.so.1.1 => /usr/lib64/libssl.so.1.1 (0x00007f4885ea7000)
        libcrypto.so.1.1 => /usr/lib64/libcrypto.so.1.1 (0x00007f4885bc7000)
        libgssapi_krb5.so.2 => /usr/lib64/libgssapi_krb5.so.2 (0x00007f4885b75000)
        libldap_r-2.4.so.2 => /usr/lib64/libldap_r-2.4.so.2 (0x00007f4885b1d000)
        libpthread.so.0 => /usr/lib64/libpthread.so.0 (0x00007f4885afb000)
        libc.so.6 => /usr/lib64/libc.so.6 (0x00007f4885932000)
        libz.so.1 => /usr/lib64/libz.so.1 (0x00007f4885916000)
        libdl.so.2 => /usr/lib64/libdl.so.2 (0x00007f488590f000)
        libkrb5.so.3 => /usr/lib64/libkrb5.so.3 (0x00007f488581e000)
        libk5crypto.so.3 => /usr/lib64/libk5crypto.so.3 (0x00007f4885805000)
        libcom_err.so.2 => /usr/lib64/libcom_err.so.2 (0x00007f48857fe000)
        libkrb5support.so.0 => /usr/lib64/libkrb5support.so.0 (0x00007f48857ec000)
        libkeyutils.so.1 => /usr/lib64/libkeyutils.so.1 (0x00007f48857e3000)
        libresolv.so.2 => /usr/lib64/libresolv.so.2 (0x00007f48857ca000)
        liblber-2.4.so.2 => /usr/lib64/liblber-2.4.so.2 (0x00007f48857b9000)
        libsasl2.so.3 => /usr/lib64/libsasl2.so.3 (0x00007f4885799000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f4885f8c000)
        libselinux.so.1 => /usr/lib64/libselinux.so.1 (0x00007f488576c000)
        libcrypt.so.2 => /usr/lib64/libcrypt.so.2 (0x00007f488572f000)
        libpcre2-8.so.0 => /usr/lib64/libpcre2-8.so.0 (0x00007f488569d000)

例如，libpthread 也在 中lib64，可以找到：

gcc -L /lib64 -lpthread
/usr/bin/ld: /usr/lib/gcc/x86_64-redhat-linux/9/../../../../lib64/crt1.o: in function `_start':

我是否遗漏了某些东西，或者通常应该立即找到它？

答案1

-lpq导致链接器查找libpq.so不带 soname 后缀的 。要在 Fedora 上提供此功能，您应该安装libpq-devel：

sudo dnf install libpq-devel

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