build: trace gnuplot commands option

Author: Neko-Box-Coder

CMakeLists.txt

@@ -57,6 +57,7 @@ option(MATPLOTPP_BUILD_HIGH_RESOLUTION_WORLD_MAP "Compile the high resolution ma
 option(MATPLOTPP_BUILD_FOR_DOCUMENTATION_IMAGES "Bypass show() commands and save figures as .svg at destruction" OFF)
 option(MATPLOTPP_BUILD_EXPERIMENTAL_OPENGL_BACKEND "Compile target with the experimental OpenGL backend" OFF)
 option(MATPLOTPP_WITH_OPENCV "Use OpenCV in CImg" ON)
+option(MATPLOT_TRACE_GNUPLOT_COMMANDS "Show gnuplot commands used for drawing" OFF)
 
 # Where to find dependencies
 option(MATPLOTPP_WITH_SYSTEM_CIMG "Use system-provided CImg.h instead of bundled" OFF)

source/matplot/CMakeLists.txt

@@ -156,6 +156,14 @@ else ()
     message("Not including the high resolution maps for geoplots")
 endif ()
 
+# Tracing gnuplot commands for debugging
+if (MATPLOT_TRACE_GNUPLOT_COMMANDS)
+    if (MATPLOTPP_BUILD_FOR_DOCUMENTATION_IMAGES)
+        message(FATAL_ERROR "MATPLOT_TRACE_GNUPLOT_COMMANDS is not compatible with MATPLOTPP_BUILD_FOR_DOCUMENTATION_IMAGES")
+    endif()
+    target_compile_definitions(matplot PUBLIC MATPLOT_TRACE_GNUPLOT_COMMANDS)
+endif ()
+
 #######################################################
 ### Library options                                 ###
 #######################################################

source/matplot/backend/gnuplot.h

@@ -73,7 +73,7 @@ namespace matplot::backend {
         // http://www.gnuplot.info/files/gpReadMouseTest.c
         static constexpr bool allow_using_mouse = true;
 
-#if defined(TRACE_GNUPLOT_COMMANDS) &&                                         \
+#if defined(MATPLOT_TRACE_GNUPLOT_COMMANDS) &&                                         \
     !defined(MATPLOT_BUILD_FOR_DOCUMENTATION_IMAGES)
         static constexpr bool trace_commands = true;
 #else