[Build] Update build files and instructions for MacOS

Author: xumingkuan

CMakeLists.txt

@@ -4,6 +4,7 @@ project(Quartz)
 SET(CMAKE_BUILD_TYPE "Release")
 
 # python
+set(Python_FIND_VIRTUALENV FIRST)
 if (MSVC)
     # Could not find the "Development" component on Windows. Using the following commands
     # to get Python_INCLUDE_DIRS and Python_LIBRARY_DIRS.
@@ -97,7 +98,7 @@ add_library(quartz_runtime SHARED ${QUARTZ_SRCS})
 
 target_compile_features(quartz_runtime PUBLIC cxx_std_17)
 
-target_link_libraries(quartz_runtime ${QUARTZ_LINK_LIBS})
+target_link_libraries(quartz_runtime PUBLIC ${QUARTZ_LINK_LIBS})
 
 target_include_directories(quartz_runtime
         PUBLIC ${PROJECT_SOURCE_DIR}/src)
@@ -109,7 +110,7 @@ if (NOT_LINUX)
         message("build on macOS, link openmp lib with compiler clang")
         include_directories(/usr/local/include)
         SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Xclang -fopenmp")
-        find_library(OPENMP_LIB libomp.dylib /usr/local/lib)
+        find_library(OPENMP_LIB libomp.dylib PATHS /usr/local/lib /usr/local/opt/libomp/lib /opt/homebrew/opt/libomp/lib)
         target_link_libraries(quartz_runtime LINK_PUBLIC ${OPENMP_LIB})
     endif()
 else()

INSTALL.md

@@ -6,10 +6,17 @@ Quartz can be built from source code using the following instructions.
 
 ### Prerequisites
 
-* `apt install build-essential` (not required for Windows)
-* CMAKE 3.16 or higher: `apt install cmake` or https://cmake.org/download/
-* conda: https://docs.conda.io/projects/conda/en/latest/user-guide/install/index.html
+* `apt install build-essential` (Linux/Unix)
+* CMAKE 3.16 or higher: `apt install cmake` (Linux/Unix) or `brew install cmake` (MacOS) or https://cmake.org/download/ (Windows)
+* conda:
+  * MacOS: 
+  ```
+  brew install anaconda
+  /opt/homebrew/anaconda3/bin/conda init zsh  # Please use your shell name and the directory you installed Anaconda
+  ```
+  * Other OS: Follow the instructions on https://docs.conda.io/projects/conda/en/latest/user-guide/install/index.html
 * Cython 3.0 or higher (We will install it with Python later by `conda`)
+* OpenMP (We will install it later by `conda` or Homebrew)
 
 #### Additional Prerequisites for Windows:
 
@@ -28,6 +35,7 @@ cd quartz
 ```shell
 conda env create --name quartz --file env.yml
 conda activate quartz
+conda install openmp  # on MacOS, please run "brew install libomp" instead
 ```
 
 3. Build the Quartz runtime library (optional with CLion, see [below](INSTALL.md#clion-integration-optional)). This step differs a little bit between Windows and other OS.

env.yml

@@ -7,7 +7,6 @@ channels:
 dependencies:
   - pip
   - python>=3.11,<3.12
-  - openmp
   - pip:
     - cython>=3.0.0
     - pybind11>=2.6.2