dtoverlay, vcgencmd, vcmailbox: fix build locations

Use the install location variables provided by GNUInstallDirs.

Author: macmpi

dtmerge/CMakeLists.txt

@@ -21,12 +21,12 @@ install(FILES dtmerge.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
 
 add_executable(dtoverlay dtoverlay_main.c utils.c)
 target_link_libraries(dtoverlay dtovl)
-install(TARGETS dtoverlay RUNTIME DESTINATION bin)
-install(FILES dtoverlay.1 DESTINATION man/man1)
+install(TARGETS dtoverlay RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(FILES dtoverlay.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
 
 add_custom_command(TARGET dtoverlay POST_BUILD COMMAND ln;-sf;dtoverlay;dtparam)
-install(FILES ${CMAKE_CURRENT_BINARY_DIR}/dtparam DESTINATION bin)
-install(FILES dtparam.1 DESTINATION man/man1)
+install(FILES ${CMAKE_CURRENT_BINARY_DIR}/dtparam DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(FILES dtparam.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
 
 set(DTOVERLAY_SCRIPTS dtoverlay-pre dtoverlay-post)
-install(PROGRAMS ${DTOVERLAY_SCRIPTS} DESTINATION bin)
+install(PROGRAMS ${DTOVERLAY_SCRIPTS} DESTINATION ${CMAKE_INSTALL_BINDIR})

vcgencmd/CMakeLists.txt

@@ -1,5 +1,10 @@
 cmake_minimum_required(VERSION 3.10)
 
+include(GNUInstallDirs)
+
+#set project name
+project(vcgencmd)
+
 add_executable(vcgencmd vcgencmd.c)
-install(TARGETS vcgencmd RUNTIME DESTINATION bin)
-install(FILES vcgencmd.1 DESTINATION man/man1)
+install(TARGETS vcgencmd RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(FILES vcgencmd.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)

vcmailbox/CMakeLists.txt

@@ -1,8 +1,13 @@
 cmake_minimum_required(VERSION 3.10)
 
+include(GNUInstallDirs)
+
+#set project name
+project(vcmailbox)
+
 add_executable(vcmailbox vcmailbox.c)
 target_link_libraries(vcmailbox)
 
-install(TARGETS vcmailbox RUNTIME DESTINATION bin)
-install(FILES vcmailbox.1 DESTINATION man/man1)
-install(FILES vcmailbox.7 raspiotp.7 raspirev.7 DESTINATION man/man7)
+install(TARGETS vcmailbox RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
+install(FILES vcmailbox.1 DESTINATION ${CMAKE_INSTALL_MANDIR}/man1)
+install(FILES vcmailbox.7 raspiotp.7 raspirev.7 DESTINATION ${CMAKE_INSTALL_MANDIR}/man7)