Can't build sccache on Ubuntu 18.04

[augusto2112]

I'm trying to install sccache but I can't make it work. I'm using Ubuntu 18.04

It fails with the message: Failed to find OpenSSL development headers. (...)

I installed OpenSSL by following the sccache page's instructions.

All the environment variables seems to be set correctly:

➜  sccache git:(master) echo $OPENSSL_LIB_DIR    
/usr/local/lib
➜  sccache git:(master) echo $OPENSSL_INCLUDE_DIR
/usr/local/include
➜  sccache git:(master) echo $OPENSSL_STATIC     
yes
➜  sccache git:(master) which openssl
/usr/local/bin/openssl

I tried setting OPENSSL_DIR to both /usr/local and /usr/local/bin but it still doesn't work.

Anyone has any idea what I'm doing wrong?

Here's the whole error message:

error: failed to run custom build command for `openssl-sys v0.9.56`

Caused by:
  process didn't exit successfully: `/tmp/cargo-installGKAYDn/release/build/openssl-sys-a8c73423c4f344c2/build-script-main` (exit code: 101)
--- stdout
cargo:rustc-cfg=const_fn
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_GNU_OPENSSL_LIB_DIR
X86_64_UNKNOWN_LINUX_GNU_OPENSSL_LIB_DIR unset
cargo:rerun-if-env-changed=OPENSSL_LIB_DIR
OPENSSL_LIB_DIR unset
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_GNU_OPENSSL_INCLUDE_DIR
X86_64_UNKNOWN_LINUX_GNU_OPENSSL_INCLUDE_DIR unset
cargo:rerun-if-env-changed=OPENSSL_INCLUDE_DIR
OPENSSL_INCLUDE_DIR unset
cargo:rerun-if-env-changed=X86_64_UNKNOWN_LINUX_GNU_OPENSSL_DIR
X86_64_UNKNOWN_LINUX_GNU_OPENSSL_DIR unset
cargo:rerun-if-env-changed=OPENSSL_DIR
OPENSSL_DIR unset
cargo:rustc-link-search=native=/usr/local/lib
cargo:rustc-link-lib=ssl
cargo:rustc-link-lib=crypto
OPT_LEVEL = Some("3")
TARGET = Some("x86_64-unknown-linux-gnu")
HOST = Some("x86_64-unknown-linux-gnu")
CC_x86_64-unknown-linux-gnu = None
CC_x86_64_unknown_linux_gnu = None
HOST_CC = None
CC = None
CFLAGS_x86_64-unknown-linux-gnu = None
CFLAGS_x86_64_unknown_linux_gnu = None
HOST_CFLAGS = None
CFLAGS = None
CRATE_CC_NO_DEFAULTS = None
DEBUG = Some("false")
CARGO_CFG_TARGET_FEATURE = Some("fxsr,sse,sse2")
running: "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-m64" "-I" "/usr/local/include" "-Wall" "-Wextra" "-E" "build/expando.c"
cargo:warning=build/expando.c:4:24: error: pasting "RUST_VERSION_OPENSSL_" and "(" does not give a valid preprocessing token
cargo:warning= #define VERSION2(n, v) RUST_VERSION_##n##_##v
cargo:warning=                        ^
cargo:warning=build/expando.c:5:23: note: in expansion of macro ‘VERSION2’
cargo:warning= #define VERSION(n, v) VERSION2(n, v)
cargo:warning=                       ^~~~~~~~
cargo:warning=build/expando.c:10:1: note: in expansion of macro ‘VERSION’
cargo:warning= VERSION(OPENSSL, OPENSSL_VERSION_NUMBER)
cargo:warning= ^~~~~~~
exit code: 1

--- stderr
thread 'main' panicked at '
Header expansion error:
Error { kind: ToolExecError, message: "Command \"cc\" \"-O3\" \"-ffunction-sections\" \"-fdata-sections\" \"-fPIC\" \"-m64\" \"-I\" \"/usr/local/include\" \"-Wall\" \"-Wextra\" \"-E\" \"build/expando.c\" with args \"cc\" did not execute successfully (status code exit code: 1)." }

Failed to find OpenSSL development headers.

You can try fixing this setting the `OPENSSL_DIR` environment variable
pointing to your OpenSSL installation or installing OpenSSL headers package
specific to your distribution:

    # On Ubuntu
    sudo apt-get install libssl-dev
    # On Arch Linux
    sudo pacman -S openssl
    # On Fedora
    sudo dnf install openssl-devel

See rust-openssl README for more information:

    https://github.com/sfackler/rust-openssl#linux
', /home/augusto/.cargo/registry/src/github.com-1ecc6299db9ec823/openssl-sys-0.9.56/build/main.rs:138:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

warning: build failed, waiting for other jobs to finish...
error: failed to compile `sccache v0.2.13`, intermediate artifacts can be found at `/tmp/cargo-installGKAYDn`

[luser]

I think you might get better help opening an issue on the rust-openssl repository. If there's something specific to sccache's usage of rust-openssl then it can certainly be fixed here, but it sounds like the problem is just that you can't build that crate on your system.

[augusto2112]

@luser thank you! I took a look at the issues in rust-openssl and someone had the same issue as me. I got it working now. Should've looked there sooner!

[mirrir0]

For those who find this issue in the future. Make sure you have the openssl dev packages installed libssl-dev (sfackler/rust-openssl#1021 (comment))

sudo apt install libssl-dev