From 3fde1dccc4d734edac3582ef11141d942d8c78c4 Mon Sep 17 00:00:00 2001
From: Schdro <>
Date: Tue, 23 May 2023 23:25:04 +0200
Subject: [PATCH] Export include path (argtable3.h) via CMake module

This way the exported header file can be used cleanly
by searching the exported config package, more so
when nonstandard paths are used for installing header.

Also use expression template to differentiate between
potentially different paths during time of compilation
and module use.

Resembles doc "cmake/help/latest/guide/importing-exporting".
---
 src/CMakeLists.txt | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 2e0b519..5fb1404 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -77,7 +77,10 @@ else()
 endif()
 
 add_library(${ARGTABLE3_PROJECT_NAME}::argtable3 ALIAS argtable3)
-target_include_directories(argtable3 PRIVATE ${PROJECT_SOURCE_DIR}/src)
+target_include_directories(argtable3 PUBLIC
+  "$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCEDIR}>"
+  "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+)
 
 set_target_properties(argtable3 PROPERTIES
   VERSION ${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}
@@ -98,6 +101,7 @@ install(TARGETS argtable3
   RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
   ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
 )
 
 install(FILES "${PROJECT_SOURCE_DIR}/src/argtable3.h"