GCC 6.1.0 - curl: (35) SSL certificate problem - Failed to download resource "gcc--patch"

[matkara]

Hello,

I have issues building gcc 6.1.0 without the multiline support to activate the OpenMP support as suggested when installing gcc 6.1.0 without this additional installation option.
Here it what I get:

[matkara@Tooslocal]$ sudo brew reinstall gcc --without-multilib
==> Reinstalling gcc with --without-multilib
==> Using the sandbox
==> Downloading https://ftpmirror.gnu.org/gcc/gcc-6.1.0/gcc-6.1.0.tar.bz2
Already downloaded: /Users/matkara/Library/Caches/Homebrew/gcc-6.1.0.tar.bz2
==> Downloading https://raw.githubusercontent.com/Homebrew/formula-patches/c963247c6b/gcc/gcc-6.1.0_infinite_memory_snacking.patch

curl: (35) SSL certificate problem: Couldn't understand the server certificate format
Error: Failed to download resource "gcc--patch"
Download failed: https://raw.githubusercontent.com/Homebrew/formula-patches/c963247c6b/gcc/gcc-6.1.0_infinite_memory_snacking.patch

Does anyone encounter the same issue?
It is only a download/certificate issue, it is probably trivial to fix. I tried to follow recommendations from here: meteor/meteor#3770
But it has no effect.

The Gist-log:
https://gist.github.com/e6dd7f3cc88d9b2e19122a9382cbc60a

[MikeMcQuaid]

Sorry but you have not followed the requested steps on the Troubleshooting page

Please follow (all of) these steps and post the information here so we can help you with your problem.

Thanks!

[MikeMcQuaid]

Closing in favour of Homebrew/brew#796 which describes the problem.

[jamver]

For anybody looking for a possible resolution to this issue...

I encountered this issue specifically after updating to macOS Sierra (10.12), with resolution coming from the workaround from this legacy-homebrew ticket:

cd ~
sudo wget http://curl.haxx.se/ca/cacert.pem
export CURL_CA_BUNDLE=~/cacert.pem

FWIW, this solved most, but not all issues. The others I resolved by manually downloading the packages using wget and placing them in the Homebrew Cache Dir.

I'd be interested to know the correct fix. e.g. Update system ca bundle? Apple patch required for system bundle?