allow build script customizations (#139)

build.sh

@@ -4,16 +4,21 @@ set -e
 
 # usage: ./build.sh [clean|clean --confirm|skiptest]
 
-BUILD_DIR=cmake-build
-# Choose: Debug, Release, RelWithDebInfo and MinSizeRel. Use Debug for asan checking locally.
-BUILD_TYPE=Debug
+if [[ -z "$BUILD_DIR" ]]; then
+  BUILD_DIR="cmake-build"
+fi
+
+if [[ -z "$BUILD_TYPE" ]]; then
+  # Choose: Debug, Release, RelWithDebInfo and MinSizeRel. Use Debug for asan checking locally.
+  BUILD_TYPE="Debug"
+fi
 
 BLUE="\033[0;34m"
 NC="\033[0m"
 
 if [[ "$1" == "clean" ]]; then
   echo -e "${BLUE}==== clean ====${NC}"
-  rm -rf $BUILD_DIR
+  rm -rf "$BUILD_DIR"
   rm -rf lib/spectator
   if [[ "$2" == "--confirm" ]]; then
     # remove all packages from the conan cache, to allow swapping between Release/Debug builds
@@ -34,16 +39,16 @@ fi
 if [[ ! -d $BUILD_DIR ]]; then
   echo -e "${BLUE}==== install required dependencies ====${NC}"
   if [[ "$BUILD_TYPE" == "Debug" ]]; then
-    conan install . --output-folder=$BUILD_DIR --build="*" --settings=build_type=$BUILD_TYPE --profile=./sanitized
+    conan install . --output-folder="$BUILD_DIR" --build="*" --settings=build_type="$BUILD_TYPE" --profile=./sanitized
   else
-    conan install . --output-folder=$BUILD_DIR --build=missing
+    conan install . --output-folder="$BUILD_DIR" --build=missing
   fi
 
   echo -e "${BLUE}==== install source dependencies ====${NC}"
   conan source .
 fi
 
-pushd $BUILD_DIR
+pushd "$BUILD_DIR"
 
 echo -e "${BLUE}==== configure conan environment to access tools ====${NC}"
 source conanbuild.sh
@@ -56,7 +61,7 @@ echo -e "${BLUE}==== generate build files ====${NC}"
 if [[ "$TITUS_SYSTEM_SERVICE" != "ON" ]]; then
   TITUS_SYSTEM_SERVICE=OFF
 fi
-cmake .. -DCMAKE_TOOLCHAIN_FILE=conan_toolchain.cmake -DCMAKE_BUILD_TYPE=$BUILD_TYPE -DTITUS_SYSTEM_SERVICE="$TITUS_SYSTEM_SERVICE"
+cmake .. -DCMAKE_TOOLCHAIN_FILE=conan_toolchain.cmake -DCMAKE_BUILD_TYPE="$BUILD_TYPE" -DTITUS_SYSTEM_SERVICE="$TITUS_SYSTEM_SERVICE"
 
 echo -e "${BLUE}==== build ====${NC}"
 cmake --build .