Fixed the path to includes. It should not be hardcoded, rather it should be taken from CMake variables.

KOLANICH · KOLANICH · commit 30863f367de7 · 2021-12-09T13:13:15.000+03:00
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -53,7 +53,7 @@ target_include_directories(
   lyra
   INTERFACE
   $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
-  $<INSTALL_INTERFACE:include>
+  $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
   )
 
 # Add an alias to public name.
@@ -83,8 +83,8 @@ install(
   )
 
 install(
-  DIRECTORY ${PROJECT_SOURCE_DIR}/include
-  DESTINATION  ${CMAKE_INSTALL_PREFIX}
+  DIRECTORY ${PROJECT_SOURCE_DIR}/include/lyra
+  DESTINATION  ${CMAKE_INSTALL_INCLUDEDIR}
   )
 
 install(
diff --git a/data/pkgconfig/pkgconfig.pc.in b/data/pkgconfig/pkgconfig.pc.in
@@ -1,5 +1,5 @@
 prefix=@CMAKE_INSTALL_PREFIX@
-includedir=${prefix}/include
+includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@
 
 Name: @PROJECT_NAME@
 Description: @PROJECT_DESCRIPTION@

Original file line number	Diff line number	Diff line change
`@@ -53,7 +53,7 @@ target_include_directories(`
`53`	`53`	`lyra`
`54`	`54`	`INTERFACE`
`55`	`55`	`$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>`
`56`		`- $<INSTALL_INTERFACE:include>`
	`56`	`+ $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>`
`57`	`57`	`)`
`58`	`58`
`59`	`59`	`# Add an alias to public name.`
`@@ -83,8 +83,8 @@ install(`
`83`	`83`	`)`
`84`	`84`
`85`	`85`	`install(`
`86`		`- DIRECTORY ${PROJECT_SOURCE_DIR}/include`
`87`		`- DESTINATION ${CMAKE_INSTALL_PREFIX}`
	`86`	`+ DIRECTORY ${PROJECT_SOURCE_DIR}/include/lyra`
	`87`	`+ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}`
`88`	`88`	`)`
`89`	`89`
`90`	`90`	`install(`