initial implementation + example + cmake "build"

example/CMakeLists.txt

@@ -0,0 +1,21 @@
+set(PROJECT_CXX_FLAGS "--std=c++20")
+
+add_definitions(${PROJECT_CXX_FLAGS})
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON CACHE INTERNAL "")
+
+#include(cmake/FindSphinx.cmake)
+
+add_subdirectory(ex1)
+
+# ----------------------------------------------------------------
+# make standard directories for std:: includes explicit
+# so that
+# (1) they appear in compile_commands.json.
+# (2) clangd (run from emacs lsp-mode) can find them
+#
+if(CMAKE_EXPORT_COMPILE_COMMANDS)
+  set(CMAKE_CXX_STANDARD_INCLUDE_DIRECTORIES
+      ${CMAKE_CXX_IMPLICIT_INCLUDE_DIRECTORIES})
+endif()

example/ex1/CMakeLists.txt

@@ -0,0 +1,3 @@
+add_executable(ex1 ex1.cpp)
+
+target_include_directories(ex1 PUBLIC ${PROJECT_SOURCE_DIR}/include)

example/ex1/ex1.cpp

@@ -0,0 +1,14 @@
+#include "nestlog/scope.hpp"
+
+using namespace xo;
+
+void A(int x) {
+    XO_SCOPE(log);
+
+    log("x:", x);
+}
+
+int
+main(int argc, char ** argv) {
+    A(66);
+}