Ubuntu 18: failed to run custom build command for `openssl-sys v0.9.39`

[karasjoh000]

installed libssl-dev on ubuntu 18 and still get this error:
error: failed to run custom build command for openssl-sys v0.9.39
process didn't exit successfully: /home/forecast/cs453_finalproj_backend/target/release/build/openssl-sys-864259d0b1f702fc/build-script-main (exit code: 101)

[karasjoh000]

might be same as #994 but too many comments there, can't find what will actually work

1.1.0g-2ubuntu4.1

[sfackler]

What does the rest of the error message say? In particular, you need pkg-config installed.

[karasjoh000]

elease
Compiling openssl-sys v0.9.39
error: failed to run custom build command for openssl-sys v0.9.39
process didn't exit successfully: /home/forecast/cs453_finalproj_backend/target/release/build/openssl-sys-864259d0b1f702fc/build-script-main (exit code: 101)
--- stdout
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_GNU_OPENSSL_LIB_DIR
cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_GNU_OPENSSL_INCLUDE_DIR
cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_GNU_OPENSSL_DIR
cargo:rerun-if-env-changed=OPENSSL_DIR
run pkg_config fail: "Failed to run \"pkg-config\" \"--libs\" \"--cflags\" \"openssl\": No such file or directory (os error 2)"

--- stderr
thread 'main' panicked at '

Could not find directory of OpenSSL installation, and this -sys crate cannot
proceed without this knowledge. If OpenSSL is installed and this crate had
trouble finding it, you can set the OPENSSL_DIR environment variable for the
compilation process.

Make sure you also have the development packages of openssl installed.
For example, libssl-dev on Ubuntu or openssl-devel on Fedora.

If you're in a situation where you think the directory should be found
automatically, please open a bug at https://github.com/sfackler/rust-openssl
and include information about your system as well as this message.

$HOST = x86_64-unknown-linux-gnu
$TARGET = x86_64-unknown-linux-gnu
openssl-sys = 0.9.39

It looks like you're compiling on Linux and also targeting Linux. Currently this
requires the pkg-config utility to find OpenSSL but unfortunately pkg-config
could not be found. If you have OpenSSL installed you can likely fix this by
installing pkg-config.

', /home/forecast/.cargo/registry/src/github.com-1ecc6299db9ec823/openssl-sys-0.9.39/build/main.rs:269:9
stack backtrace:
0: std::sys::unix::backtrace::tracing:👿:unwind_backtrace
at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
1: std::sys_common::backtrace::_print
at src/libstd/sys_common/backtrace.rs:71
2: std::panicking::default_hook::{{closure}}
at src/libstd/sys_common/backtrace.rs:59
at src/libstd/panicking.rs:211
3: std::panicking::default_hook
at src/libstd/panicking.rs:227
4: std::panicking::rust_panic_with_hook
at src/libstd/panicking.rs:476
5: std::panicking::begin_panic
6: build_script_main:👿:get_openssl
7: build_script_main::main
8: std::rt::lang_start::{{closure}}
9: std::panicking::try::do_call
at src/libstd/rt.rs:59
at src/libstd/panicking.rs:310
10: __rust_maybe_catch_panic
at src/libpanic_unwind/lib.rs:102
11: std::rt::lang_start_internal
at src/libstd/panicking.rs:289
at src/libstd/panic.rs:398
at src/libstd/rt.rs:58
12: main
13: __libc_start_main
14: _start

[karasjoh000]

so how do I configure pkg-config

[karasjoh000]

Works now, ran sudo apt install pkg-config

[agryaznov]

Works now, ran sudo apt install pkg-config

Didn't help in my case. What helped was to get that openssl library sources and build it ourselves

See the full list of commands here

[ssainball]

Works now, ran sudo apt install pkg-config

Thank you very much. from Korea.

[lechatthecat]

I'm using Ubuntu and the error message says:

Make sure you also have the development packages of openssl installed.
For example, libssl-dev on Ubuntu or openssl-devel on Fedora.

So I installed it:

sudo apt install libssl-dev

And it is working now.