File 'openssl / conf.h' not found on macOS Sierra
I am working on a C ++ project that uses boost asio. While trying to build libraries using Asia I get the following error:
/usr/local/include/boost/asio/ssl/detail/openssl_types.hpp:19:10: fatal error: 'openssl/conf.h' file not found
#include <openssl/conf.h>
Searching for solutions here and here , I tried
brew install openssl
brew link openssl --force
xcode-select --install
But it didn't help.
Doing the following also doesn't work
export C_INCLUDE_PATH=/usr/local/include
export CPLUS_INCLUDE_PATH=/usr/local/include
The Boost version I'm using is boost_1_63_0
. I am on MacOS Sierra
with Xcode 8.3.1
. I have installed boost using Homebrew
brew install boost
As I understand from other links, Xcode is looking for the wrong place for ssl headers. But how can I solve this?
I looked over my /usr/local/include
and /opt/local/include
. 'openssl / ssl.h' is missing in both locations. But the execution brew install openssl
says the following
Warning: openssl is a keg-only and another version is linked to opt.
Use `brew install --force` if you want to install this version
Performing brew install openssl --force
says
Warning: openssl-1.0.2k already installed, it just not linked.
Execution brew link openssl --force
also doesn't solve the problem.
Doig a which openssl
returns the following:
/usr/local/bin/openssl
Please suggest
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Bundled or not, all installed Homebrew packages are available here /usr/local/opt
. Also, when installing openssl
via Homebrew, Homebrew tells you how to use the openssl libraries and headers.
~ nega@rust 15s
❯ brew install openssl
==> Downloading https://homebrew.bintray.com/bottles/openssl-1.0.2k.el_capitan.bottle.tar.gz
Already downloaded: /Users/nega/Library/Caches/Homebrew/openssl-1.0.2k.el_capitan.bottle.tar.gz
==> Pouring openssl-1.0.2k.el_capitan.bottle.tar.gz
==> Using the sandbox
==> Caveats
A CA file has been bootstrapped using certificates from the SystemRoots
keychain. To add additional certificates (e.g. the certificates added in
the System keychain), place .pem files in
/usr/local/etc/openssl/certs
and run
/usr/local/opt/openssl/bin/c_rehash
This formula is keg-only, which means it was not symlinked into /usr/local.
Apple has deprecated use of OpenSSL in favor of its own TLS and crypto libraries
If you need to have this software first in your PATH run:
echo 'export PATH="/usr/local/opt/openssl/bin:$PATH"' >> ~/.zshrc
For compilers to find this software you may need to set:
LDFLAGS: -L/usr/local/opt/openssl/lib
CPPFLAGS: -I/usr/local/opt/openssl/include
For pkg-config to find this software you may need to set:
PKG_CONFIG_PATH: /usr/local/opt/openssl/lib/pkgconfig
==> Summary
🍺 /usr/local/Cellar/openssl/1.0.2k: 1,696 files, 12MB
~ nega@rust 11s
❯
You don't need anything brew link
. Just use the Homebrew directories that you mention in the appropriate places in Xcode and CMake.
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