Add CMake compile instructions for macOS

1 files changed, 13 insertions, 39 deletions

diff --git a/README.md b/README.md
index 5eecfce..47f8f08 100644
--- a/README.md
+++ b/README.md
@@ -326,7 +326,7 @@ Also needs a UTF8 locale and a font that covers:
 
 ## Compilation Linux
 
-   Needs GCC 10 / Clang 16 (or higher).
+   Requires at least GCC 10 or Clang 16.
 
    The makefile also needs GNU coreutils and `sed` (should already be installed on any modern distribution).
 
@@ -359,11 +359,9 @@ Also needs a UTF8 locale and a font that covers:
    ```
 
 <details>
-
 <summary>
 
 ### With Make
-
 </summary>
 
 1. **Install dependencies (example for Ubuntu 21.04 Hirsute)**      
@@ -451,11 +449,9 @@ Also needs a UTF8 locale and a font that covers:
 
 </details>
 <details>
-
 <summary>
 
 ### With CMake (Community maintained)
-
 </summary>
 
 1. **Install build dependencies**
@@ -498,7 +494,7 @@ Also needs a UTF8 locale and a font that covers:
    | `-DBTOP_RSMI_STATIC=<ON\|OFF>`  | Build and link the ROCm SMI library statically (OFF by default)         |
    | `-DCMAKE_INSTALL_PREFIX=<path>` | The installation prefix ('/usr/local' by default)                       |
 
-   To force a compiler, run `CXX=<compiler> cmake -B build -G Ninja`
+   To force any other compiler, run `CXX=<compiler> cmake -B build -G Ninja`
 
 4. **Install**
 
@@ -525,7 +521,7 @@ Also needs a UTF8 locale and a font that covers:
 
 ## Compilation macOS OSX
 
-   Needs GCC 10 / Clang 16 (or higher).
+   Requires at least GCC 10 or Clang 16.
 
    With GCC, version 12 (or better) is needed for macOS Ventura. If you get linker errors on Ventura you'll need to upgrade your command line tools (Version 14.0) is bugged.
 
@@ -534,11 +530,9 @@ Also needs a UTF8 locale and a font that covers:
    Install and use Homebrew or MacPorts package managers for easy dependency installation
 
 <details>
-
 <summary>
 
 ### With Make
-
 </summary>
 
 1. **Install dependencies (example for Homebrew)**
@@ -621,30 +615,20 @@ Also needs a UTF8 locale and a font that covers:
 
 </details>
 <details>
-
 <summary>
 
 ### With CMake (Community maintained)
-
 </summary>
 
 1. **Install build dependencies**
 
-   Requires Clang / GCC, CMake, Ninja and Git
-
-   _**Note**: Since btop uses C++ 20 features the compiler choice is important._
+   Requires Clang, CMake, Ninja and Git
 
-   With LLVM:
    ```bash
    brew update --quiet
-   brew install llvm@17 ninja
+   brew install cmake git llvm ninja
    ```
 
-   With GCC:
-   ```bash
-   brew update --quiet
-   brew install gcc@13
-
 2. **Clone the repository**
 
    ```bash
@@ -653,21 +637,18 @@ Also needs a UTF8 locale and a font that covers:
 
 3. **Compile**
 
-	FreeBSD 14 and later:
    ```bash
    # Configure
+   export LLVM_PREFIX="$(brew --prefix llvm)"
+   export CXX="$LLVM_PREFIX/bin/clang++"
+   export CPPFLAGS="-I$LLVM_PREFIX/include"
+   export LDFLAGS="-L$LLVM_PREFIX/lib -L$LLVM_PREFIX/lib/c++ -Wl,-rpath,$LLVM_PREFIX/lib/c++ -fuse-ld=$LLVM_PREFIX/bin/ld64.lld"
    cmake -B build -G Ninja
    # Build
    cmake --build build
    ```
 
-	FreeBSD 13:
-   ```bash
-   # Configure
-   CXX=g++13 cmake -B build -G Ninja
-   # Build
-   cmake --build build
-   ```
+   _**Note:** btop uses lots of C++ 20 features, so it's necessary to be specific about the compiler and the standard library. If you get a compile with Apple-Clang or GCC, feel free to add the instructions here._
 
    This will automatically build a release version of btop.
 
@@ -675,16 +656,13 @@ Also needs a UTF8 locale and a font that covers:
 
    | Configure flag                  | Description                                                             |
    |---------------------------------|-------------------------------------------------------------------------|
-   | `-DBTOP_STATIC=<ON\|OFF>`       | Enables static linking (OFF by default)                                 |
    | `-DBTOP_LTO=<ON\|OFF>`          | Enables link time optimization (ON by default)                          |
    | `-DBTOP_USE_MOLD=<ON\|OFF>`     | Use mold to link btop (OFF by default)                                  |
    | `-DBTOP_PEDANTIC=<ON\|OFF>`     | Compile with additional warnings (OFF by default)                       |
    | `-DBTOP_WERROR=<ON\|OFF>`       | Compile with warnings as errors (OFF by default)                        |
    | `-DCMAKE_INSTALL_PREFIX=<path>` | The installation prefix ('/usr/local' by default)                       |
 
-   _**Note:** Static linking does not work with GCC._
-
-   To force a compiler, run `CXX=<compiler> cmake -B build -G Ninja`
+   To force any specific compiler, run `CXX=<compiler> cmake -B build -G Ninja`
 
 4. **Install**
 
@@ -711,16 +689,14 @@ Also needs a UTF8 locale and a font that covers:
 
 ## Compilation FreeBSD
 
-   Needs GCC 10 / Clang 16 (or higher).
+   Requires at least GCC 10 or Clang 16.
 
    Note that GNU make (`gmake`) is required to compile on FreeBSD.
 
 <details>
-
 <summary>
 
 ### With gmake
-
 </summary>
 
 1. **Install dependencies**
@@ -804,11 +780,9 @@ Also needs a UTF8 locale and a font that covers:
 
 </details>
 <details>
-
 <summary>
 
 ### With CMake (Community maintained)
-
 </summary>
 
 1. **Install build dependencies**
@@ -866,7 +840,7 @@ Also needs a UTF8 locale and a font that covers:
 
    _**Note:** Static linking does not work with GCC._
 
-   To force a compiler, run `CXX=<compiler> cmake -B build -G Ninja`
+   To force any other compiler, run `CXX=<compiler> cmake -B build -G Ninja`
 
 4. **Install**