.github/workflows/CI.yml: compile and test both openssl and libsecp256k1 as elliptic curve implementation.

.github/workflows/CI.yml

@@ -13,8 +13,9 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-20.04, ubuntu-22.04, macos-latest, windows-latest ]
+        ec_lib: [ openssl, libsecp256k1 ]
 
-    name: ${{matrix.os}}
+    name: ${{matrix.os}} - ${{matrix.ec_lib}}
     runs-on: ${{matrix.os}}
 
     steps:
@@ -31,7 +32,7 @@ jobs:
         if [ "$RUNNER_OS" == "macOS" ]; then
             SSL_OPTS="-D OPENSSL_ROOT_DIR=/usr/local/opt/openssl@1.1"
         fi
-        cmake -DBUILD_TESTING=ON ${SSL_OPTS} -B build
+        cmake -DBUILD_TESTING=ON ${SSL_OPTS} -DEC_LIB=${{matrix.ec_lib}} -B build
 
     - name: Build
       shell: bash