travis: add bearssl build

Closes #7133

.travis.yml

@@ -26,6 +26,7 @@ cache:
   directories:
   - $HOME/wolfssl-4.7.0-stable
   - $HOME/mesalink-1.0.0
+  - $HOME/bearssl-0.6
 
 env:
   global:
@@ -134,6 +135,16 @@ jobs:
         - libpsl-dev
         - libbrotli-dev
         - libzstd-dev
+  - env:
+    - T=debug-bearssl C="--with-bearssl" BEARSSL="yes"
+    addons:
+      apt:
+        <<: *common_apt
+        packages:
+        - *common_packages
+        - libpsl-dev
+        - libbrotli-dev
+        - libzstd-dev
   - env:
     - T=novalgrind LIBRESSL=yes C="--with-openssl=$HOME/libressl" LD_LIBRARY_PATH=/home/travis/libressl/lib:/usr/local/lib
     - OVERRIDE_CC="CC=gcc-8" OVERRIDE_CXX="CXX=g++-8"

scripts/travis/before_script.sh

@@ -175,4 +175,18 @@ if [ $TRAVIS_OS_NAME = linux ]; then
     sudo make install
 
   fi
+
+  if [ "$BEARSSL" = "yes" ]; then
+    if [ ! -e $HOME/bearssl-0.6/Makefile ]; then
+      cd $HOME
+      curl -LO https://bearssl.org/bearssl-0.6.tar.gz
+      tar -xzf bearssl-0.6.tar.gz
+      cd bearssl-0.6
+      make
+    fi
+    cd $HOME/bearssl-0.6
+    sudo cp inc/*.h /usr/local/include
+    sudo cp build/libbearssl.* /usr/local/lib
+  fi
+
 fi

scripts/travis/script.sh

@@ -76,6 +76,12 @@ if [ "$T" = "debug-rustls" ]; then
   make "TFLAGS=HTTPS !313" test-nonflaky
 fi
 
+if [ "$T" = "debug-bearssl" ]; then
+  ./configure --enable-debug --enable-werror $C
+  make
+  make "TFLAGS=-n !313" test-nonflaky
+fi
+
 if [ "$T" = "novalgrind" ]; then
   ./configure --enable-werror $C
   make