CI: Try adding a workflow for the openssl ECH branch.

Author: notroj

.github/workflows/linux.yml

@@ -316,6 +316,18 @@ jobs:
               APU_CONFIG="--without-crypto"
             pkgs: subversion
           # -------------------------------------------------------------------------
+          - name: OpenSSL ECH branch
+            config: --enable-mods-shared=most --enable-maintainer-mode --disable-md --disable-http2 --disable-ldap --disable-crypto
+            notest-cflags: -Werror -O2
+            env: |
+              TEST_OPENSSL3=ech
+              TEST_OPENSSL3_BRANCH=feature/ech
+              OPENSSL_CONFIG=no-engine
+              APR_VERSION=1.7.6
+              APU_VERSION=1.6.3
+              APU_CONFIG="--without-crypto"
+            pkgs: subversion
+          # -------------------------------------------------------------------------
     runs-on: ${{ matrix.os == '' && 'ubuntu-latest' || matrix.os }}
     timeout-minutes: 30
     env:

test/travis_before_linux.sh

@@ -172,8 +172,12 @@ if test -v TEST_OPENSSL3; then
 
         mkdir -p build/openssl
         pushd build/openssl
-           curl -L "https://github.com/openssl/openssl/releases/download/openssl-${TEST_OPENSSL3}/openssl-${TEST_OPENSSL3}.tar.gz" |
-              tar -xzf -
+           if test -v TEST_OPENSSL3_BRANCH; then
+               git clone -b $TEST_OPENSSL3_BRANCH -q https://github.com/openssl/openssl openssl-${TEST_OPENSSL3}
+           else
+               curl -L "https://github.com/openssl/openssl/releases/download/openssl-${TEST_OPENSSL3}/openssl-${TEST_OPENSSL3}.tar.gz" |
+                   tar -xzf -
+           fi
            cd openssl-${TEST_OPENSSL3}
            # Build with RPATH so ./bin/openssl doesn't require $LD_LIBRARY_PATH
            ./Configure --prefix=$HOME/root/openssl3 \