uncommon.mk Recipe for target 'build-ext' failed

[Morningstar88]

Various Answers Here

rbenv/ruby-build#731

rbenv/ruby-build#1146

RoR Installation Main Doc

https://docs.google.com/document/d/1LJNsyG3RPPyyGqavcAkUWLFELuf7iwCsnqNonCKbbeU/edit

[Morningstar88]

Tried this, didn't work:

I also ran into this problem on ubuntu 14.10, I also solved it by sudo aptitude install libffi-dev.

[Morningstar88]

Some good ideas here

rbenv/ruby-build#1146

[Morningstar88]

Trying this

I have not detected the root cause of the problem, I found a workaround:

1. Build openssl from the source:

$ cd /tmp
$ curl -LO https://www.openssl.org/source/openssl-1.1.0f.tar.gz
$ tar xvfz openssl-1.1.0f.tar.gz
$ cd openssl-1.1.0f
$ ./config --prefix=/opt/openssl/1.1.0f
$ make
$ sudo make install

1. Build ruby with CONFIGURE_OPTS environment variable:

$ CONFIGURE_OPTS="--with-openssl-dir=/opt/openssl/1.1.0f" rbenv install 2.4.2

[UPDATE]

You also need to install cacert.pem in order to make SSL connections:

$ sudo wget -O /opt/openssl/1.1.0f/ssl/cert.pem http://curl.haxx.se/ca/cacert.pem

[Morningstar88]

Trying a shorter version:

for ruby >2.4

apt install libssl-dev
rbenv install 2.7.1

doesn't work

[Morningstar88]

rbenv/ruby-build#1146 (comment)

I have not detected the root cause of the problem, I found a workaround:

1. Build openssl from the source:

$ cd /tmp
$ curl -LO https://www.openssl.org/source/openssl-1.1.0f.tar.gz
$ tar xvfz openssl-1.1.0f.tar.gz
$ cd openssl-1.1.0f
$ ./config --prefix=/opt/openssl/1.1.0f
$ make
$ sudo make install

1. Build ruby with CONFIGURE_OPTS environment variable:

$ CONFIGURE_OPTS="--with-openssl-dir=/opt/openssl/1.1.0f" rbenv install 2.4.2

[UPDATE]

You also need to install cacert.pem in order to make SSL connections:

$ sudo wget -O /opt/openssl/1.1.0f/ssl/cert.pem http://curl.haxx.se/ca/cacert.pem

[Morningstar88]

According to a bug report, you shoud type:

$ sudo apt-get install gcc-6 g++-6
$ CC=/usr/bin/gcc-6 rbenv install 2.3.1

Doesn't work.

Unable to locate package gcc-6

https://unix.stackexchange.com/questions/566500/unable-to-locate-package-gcc-6-on-debian

[Morningstar88]

Try: Build openssl from the source

I have not detected the root cause of the problem, I found a workaround:

1. Build openssl from the source:

$ cd /tmp
$ curl -LO https://www.openssl.org/source/openssl-1.1.0f.tar.gz
$ tar xvfz openssl-1.1.0f.tar.gz
$ cd openssl-1.1.0f
$ ./config --prefix=/opt/openssl/1.1.0f
$ make
$ sudo make install

1. Build ruby with CONFIGURE_OPTS environment variable:

$ CONFIGURE_OPTS="--with-openssl-dir=/opt/openssl/1.1.0f" rbenv install 2.4.2

Looks like it's working so far.

Trying:

[UPDATE]

You also need to install cacert.pem in order to make SSL connections:

$ sudo wget -O /opt/openssl/1.1.0f/ssl/cert.pem http://curl.haxx.se/ca/cacert.pem