chore: cli now prints library version with --help

Author: CD3

CMakeLists.txt

@@ -50,15 +50,15 @@ target_include_directories(
   Interpolate
   INTERFACE
     $<BUILD_INTERFACE:${libInterpolate_SOURCE_DIR}/src>
-    $<BUILD_INTERFACE:${libInterpolate_BINARY_DIR}/include>
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
     $<INSTALL_INTERFACE:include>)
 target_compile_definitions(Interpolate
                            INTERFACE $<$<BOOL:${MSVC}>:_USE_MATH_DEFINES>)
 target_compile_features(Interpolate INTERFACE cxx_std_17)
 
 configure_file(
   "${CMAKE_CURRENT_SOURCE_DIR}/src/libInterpolate/version.h.in"
-  "${CMAKE_BINARY_DIR}/include/libInterpolate/version.h"
+  "${CMAKE_CURRENT_BINARY_DIR}/include/libInterpolate/version.h"
 )
 target_sources(
   Interpolate

applications/interp-cli.cpp

@@ -1,3 +1,5 @@
+#include <libInterpolate/version.h>
+
 #include <algorithm>
 #include <boost/program_options.hpp>
 #include <boost/range/adaptor/strided.hpp>
@@ -14,6 +16,7 @@ using namespace std;
 namespace po = boost::program_options;
 
 void print_usage(char prog_name[]) {
+    cout << "version " << libInterpolate_FULL_VERSION << "\n\n";
     cout << "usage: " << prog_name
          << " [OPTIONS] interpolation-data-file x-values-file output-file"
          << "\n";

src/libInterpolate/version.h.in

@@ -1,3 +1,3 @@
 #pragma once
 
-#define libInterpolate_VERSION "@libInterpolate_FULL_VERSION@"
+#define libInterpolate_FULL_VERSION "@libInterpolate_FULL_VERSION@"