Place cache in project directory

Fixes permission errors when running pkgman on a real machine (like Mac
in CI)

Author: ekilmer

Dockerfile

@@ -31,12 +31,12 @@ RUN pip3 install requests
 
 RUN mkdir -p /cxx-common
 WORKDIR /cxx-common
-COPY . ./
 
-# Try to recover cache
+# Will try to use cache at './cache'
 # Get cache using
-#   docker run --rm --entrypoint /bin/bash -v $(pwd)/cache:/tmp cxx-bootstrap -c "cp -r /cache/* /tmp"
-RUN mv ./cache /cache || true
+#   docker build -t cxx-common-build --target cxx-common-build .
+#   docker run --rm --entrypoint /bin/bash -v $(pwd)/cache:/tmp cxx-common-build -c "cp -r ./cache /tmp"
+COPY . ./
 
 RUN mkdir -p "${BOOTSTRAP}" && mkdir -p "${LIBRARIES}"
 

pkgman/installers/common.py

@@ -628,12 +628,13 @@ def common_installer_llvm(properties):
     cmake_command += ["-DLLVM_ENABLE_Z3_SOLVER=OFF", "-DCLANG_ANALYZER_ENABLE_Z3_SOLVER=OFF"]
 
   if properties["ccache"]:
-    print(" i Enabling ccache on /cache/ccache ... ")
+    ccache_dir = f"{os.getcwd()}/cache/ccache"
+    print(f" i Enabling ccache on {ccache_dir} ... ")
     # some versions of LLVM use CCACHE_MAX_SIZE, others use CCACHE_SIZE
     cmake_command.extend(
         ["-DLLVM_CCACHE_BUILD=ON",
          "-DLLVM_CCACHE_SIZE=5G",
-         "-DLLVM_CCACHE_DIR=/cache/ccache",
+         f'-DLLVM_CCACHE_DIR="{ccache_dir}"',
          "-DLLVM_CCACHE_MAXSIZE=5G"])
 
   if use_libcxx:

pkgman/installers/utils.py

@@ -49,7 +49,8 @@ def set_ccache_compiler():
     """
     os.environ["CMAKE_CXX_COMPILER_LAUNCHER"] = "ccache"
     os.environ["CMAKE_C_COMPILER_LAUNCHER"] = "ccache"
-    os.environ["CCACHE_DIR"] = "/cache/ccache"
+    # Only works if we never change directories in the script(s)
+    os.environ["CCACHE_DIR"] = f'"{os.getcwd()}/cache/ccache"'
 
 
 def get_parallel_build_options():