Fix the Windows flow and improve the others (#413)

.github/workflows/build-blst-nightly.yml

@@ -30,44 +30,35 @@ jobs:
     - name: Ubuntu build C++ and test blst at origin/main
       if: startsWith(matrix.os, 'ubuntu')
       run: |
-        echo "Relic origin/main commit:"
+        echo "blst origin/main commit:"
         curl -H "application/vnd.github.v3.sha" \
         https://api.github.com/repos/supranational/blst/commits/master | \
         head -10
         cmake --version
         export BLST_MAIN=1
-        mkdir -p build
-        cd build
-        cmake ../
-        cmake --build . -- -j 6
+        cmake -B build .
+        cmake --build build -- -j 6
         echo "Running ./src/runtest"
-        ./src/runtest
+        ./build/src/runtest
 
     - name: Mac OS build C++ and test
       if: startsWith(matrix.os, 'macos')
       run: |
-        ls -l
         export MACOSX_DEPLOYMENT_TARGET=10.14
         export BLST_MAIN=1
-        mkdir -p build
-        ls -l build
-        cd build
-        cmake ../
-        cmake --build . -- -j 6
+        cmake -B build .
+        cmake --build build -- -j 6
         echo "Running ./src/runtest"
-        ./src/runtest
+        ./build/src/runtest
 
     - name: Windows build C++ and test
       if: startsWith(matrix.os, 'windows')
       run: |
-        $env:BLST_MAIN = '1'
-        mkdir build
-        cd build
-        cmake ../
-        cmake --build .
-        Get-ChildItem -Path src\ -Force
-        echo "Running ./src/runtest"
-        src\runtest
+        set BLST_MAIN=1
+        cmake -B build .
+        cmake --build build
+        echo "Running runtest"
+        build\src\Debug\runtest.exe
   
     - name: Install Python
       uses: actions/setup-python@v4
@@ -84,6 +75,6 @@ jobs:
     - name: Test javascript bindings
       run: |
         emcc -v
-        export RELIC_MAIN=1
+        export BLST_MAIN=1
         sh emsdk_build.sh
         sh js_test.sh