LIBEXECDIR should be set and used

CMakeLists.txt

@@ -51,8 +51,10 @@ if (OS_LINUX)
     set(CMAKE_INSTALL_PREFIX "/usr")
     set(BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin")
     set(DATADIR "${CMAKE_INSTALL_PREFIX}/share")
+    set(LIBEXECDIR "${CMAKE_INSTALL_PREFIX}/libexec")
     set(PROJECT_DATADIR "${DATADIR}/openbangla-keyboard")
     add_definitions(-DPROJECT_DATADIR="${PROJECT_DATADIR}")
+    add_definitions(-DLIBEXECDIR="${LIBEXECDIR}")
 
     include(FindPkgConfig)
     find_package(PkgConfig)

data/openbangla-keyboard.desktop.in

@@ -1,7 +1,7 @@
 [Desktop Entry]
 Name=OpenBangla Keyboard
 Comment=An OpenSource, Unicode compliant Bengali Input Method.
-Exec=@BIN_DIR@/openbangla-gui %f
+Exec=@LIBEXECDIR@/openbangla-keyboard/openbangla-gui %f
 Icon=openbangla-keyboard
 Type=Application
 Categories=Utility;Application;

data/openbangla.xml.in

@@ -4,7 +4,7 @@
 <component>
     <name>org.freedesktop.IBus.OpenBangla</name>
     <description>OpenBangla Keyboard</description>
-    <exec>@BIN_DIR@/ibus-openbangla --ibus</exec>
+    <exec>@LIBEXECDIR@/ibus-engine-openbangla --ibus</exec>
     <version>@PROJECT_VERSION@</version>
     <author>See About Dialog</author>
     <license>GPL 3</license>

src/engine/ibus/CMakeLists.txt

@@ -1,6 +1,6 @@
 include_directories(../riti/include ../../shared ${IBUS_INCLUDE_DIRS})
-add_executable(ibus-openbangla main.cpp)
-target_link_libraries(ibus-openbangla riti libShared Qt5::Core ${IBUS_LIBRARIES} dl pthread)
+add_executable(ibus-engine-openbangla main.cpp)
+target_link_libraries(ibus-engine-openbangla riti libShared Qt5::Core ${IBUS_LIBRARIES} dl pthread)
 
 ## Configure the files
 configure_file(${CMAKE_SOURCE_DIR}/data/openbangla.xml.in ${CMAKE_BINARY_DIR}/data/openbangla.xml)
@@ -78,5 +78,5 @@ install(FILES ${CMAKE_BINARY_DIR}/data/openbangla-keyboard.desktop
 install(FILES ${CMAKE_SOURCE_DIR}/data/io.github.openbangla.keyboard.metainfo.xml
         DESTINATION ${DATADIR}/metainfo)
 
-install(TARGETS ibus-openbangla
-        RUNTIME DESTINATION ${BIN_DIR})
+install(TARGETS ibus-engine-openbangla
+        RUNTIME DESTINATION ${LIBEXECDIR})

src/engine/ibus/main.cpp

@@ -338,7 +338,7 @@ void start_setup(bool ibus) {
                                    "GPL 3",
                                    "See AboutBox",
                                    "http://openbangla.github.io/",
-                                   PROJECT_DATADIR "/ibus-openbangla --ibus",
+                                   LIBEXECDIR "/ibus-engine-openbangla --ibus",
                                    "openbangla-keyboard"
     );
 

src/frontend/CMakeLists.txt

@@ -25,4 +25,4 @@ add_executable(openbangla-gui ${SRC_MAIN} ${SRC_GUI})
 target_link_libraries(openbangla-gui libShared 3rdParty Qt5::Widgets Qt5::Network ${ZSTD_LIBRARIES})
 
 install(TARGETS openbangla-gui
-        RUNTIME DESTINATION ${BIN_DIR})
+        RUNTIME DESTINATION ${LIBEXECDIR}/openbangla-keyboard)