Add debug configuration to Travis

.travis.yml

@@ -24,6 +24,7 @@ env:
   matrix:
     - BUILD_MODE="all"
     - BUILD_MODE="no-asm"
+    - BUILD_MODE="debug"
     - BUILD_MODE="asan"
     - BUILD_MODE="ubsan"
     - BUILD_MODE="ios-arm"
@@ -77,6 +78,10 @@ script:
         cp ./TestScripts/setenv-ios.sh .
         . ./setenv-ios.sh tv
         make -f GNUmakefile-cross
+    elif [[ "$BUILD_MODE" == "debug" ]]; then
+        CXXFLAGS="-DDEBUG -g2 -O1" make
+        ./cryptest.exe v
+        ./cryptest.exe tv all
     else
         make "$BUILD_MODE"
         ./cryptest.exe v