From 7d72f825ae6ef7019fb1898165cbe701971fc111 Mon Sep 17 00:00:00 2001
From: AndreaRigoni <andrea.rigoni@igi.cnr.it>
Date: Fri, 3 Apr 2026 13:22:52 +0000
Subject: [PATCH] fixed warnings

---
 CMakeLists.txt | 11 ++++++++++-
 README.md      | 12 ++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f4ce092..9e12148 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -15,11 +15,20 @@ if(POLICY CMP0167)
     cmake_policy(SET CMP0167 NEW)
 endif()
 
-
 ## -------------------------------------------------------------------------- ##
 
 project(uLib)
 
+# Remove GCC-only flag injected by conda's CFLAGS/CXXFLAGS that clang doesn't support.
+# Must run after project() since that's when CMake initialises CMAKE_<LANG>_FLAGS from env.
+if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    foreach(_lang C CXX)
+        foreach(_var CMAKE_${_lang}_FLAGS CMAKE_${_lang}_FLAGS_RELEASE CMAKE_${_lang}_FLAGS_RELWITHDEBINFO CMAKE_${_lang}_FLAGS_DEBUG)
+            string(REPLACE "-fno-merge-constants" "" ${_var} "${${_var}}")
+        endforeach()
+    endforeach()
+endif()
+
 # CUDA Toolkit seems to be missing locally. Toggle ON if nvcc is made available.
 option(USE_CUDA "Enable CUDA support" OFF)
 if(USE_CUDA)
diff --git a/README.md b/README.md
index d3e4092..0b7729d 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,18 @@ cmake --preset conan-release
 cmake --build build -j$(nproc)
 ```
 
+5. **Clean build (wipe and rebuild everything):**
+```bash
+cmake --build build --clean-first -j$(nproc)
+```
+
+6. **Run tests:**
+```bash
+cmake --build build --target test -j$(nproc)
+# or equivalently:
+ctest --test-dir build --output-on-failure -j$(nproc)
+```
+
 #### LLVM/Clang build (clang + lld + ccache — fastest)
 
 A `fast` conan profile is provided that uses **clang**, **lld** (LLVM linker), and **ccache**. Install them into your environment first: