From ebe01b5c259fa28b4da24cc1c11ab24a31281b64 Mon Sep 17 00:00:00 2001
From: Remi Collet <remi@remirepo.net>
Date: Mon, 13 Jul 2020 08:16:59 +0200
Subject: [PATCH] restore GNUInstallDirs

---
 CMakeLists.txt     | 17 +++++++++--------
 lib/CMakeLists.txt | 10 +++++-----
 man/CMakeLists.txt |  8 ++++----
 3 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8013d2ea..b2f81b1c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -29,6 +29,7 @@ include(CheckCSourceRuns)
 include(CheckCSourceCompiles)
 include(CheckStructHasMember)
 include(TestBigEndian)
+include(GNUInstallDirs)
 if(ENABLE_COMMONCRYPTO)
   check_include_files(CommonCrypto/CommonCrypto.h COMMONCRYPTO_FOUND)
 else()
@@ -234,7 +235,7 @@ endif(WIN32)
 
 # rpath handling: use rpath in installed binaries
 if(NOT CMAKE_SYSTEM_NAME MATCHES Linux)
-  set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/lib)
+  set(CMAKE_INSTALL_RPATH ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
   set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 endif()
 
@@ -279,9 +280,9 @@ endif()
 # pkgconfig file
 set(prefix ${CMAKE_INSTALL_PREFIX})
 set(exec_prefix \${prefix})
-set(bindir \${exec_prefix}/bin)
-set(libdir \${exec_prefix}/lib)
-set(includedir \${prefix}/include)
+SET(bindir \${exec_prefix}/${CMAKE_INSTALL_BINDIR})
+SET(libdir \${exec_prefix}/${CMAKE_INSTALL_LIBDIR})
+SET(includedir \${prefix}/${CMAKE_INSTALL_INCLUDEDIR})
 if(CMAKE_SYSTEM_NAME MATCHES BSD)
   set(PKG_CONFIG_RPATH "-Wl,-R\${libdir}")
 endif(CMAKE_SYSTEM_NAME MATCHES BSD)
@@ -295,7 +296,7 @@ foreach(LIB ${LIBS_PRIVATE})
 endforeach()
 configure_file(libzip.pc.in libzip.pc @ONLY)
 if(LIBZIP_DO_INSTALL)
-  install(FILES ${PROJECT_BINARY_DIR}/libzip.pc DESTINATION lib/pkgconfig)
+  install(FILES ${PROJECT_BINARY_DIR}/libzip.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
 endif()
 
 # fixed size integral types
@@ -417,7 +418,7 @@ write_basic_package_version_file("${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-v
   COMPATIBILITY AnyNewerVersion)
 
 configure_package_config_file("${PROJECT_NAME}-config.cmake.in" "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
-  INSTALL_DESTINATION lib/cmake/libzip)
+  INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/libzip)
 
 # Add targets to the build-tree export set
 export(TARGETS zip
@@ -427,10 +428,10 @@ export(TARGETS zip
 if(LIBZIP_DO_INSTALL)
   install(FILES ${PROJECT_BINARY_DIR}/zipconf.h DESTINATION include)
   install(FILES ${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake ${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake
-    DESTINATION lib/cmake/${PROJECT_NAME}
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
     )
   install(EXPORT ${PROJECT_NAME}-targets NAMESPACE libzip:: FILE ${PROJECT_NAME}-targets.cmake
-    DESTINATION lib/cmake/${PROJECT_NAME}
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}
     )
 endif()
 
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 5a6f1713..082203d0 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -181,11 +181,11 @@ target_include_directories(zip
 if(LIBZIP_DO_INSTALL)
   install(TARGETS zip
     EXPORT ${PROJECT_NAME}-targets
-    RUNTIME DESTINATION bin
-    ARCHIVE DESTINATION lib
-    INCLUDES DESTINATION include
-    LIBRARY DESTINATION lib)
-  install(FILES zip.h DESTINATION include)
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
+  install(FILES zip.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 endif()
 
 # create zip_err_str.h from zip.h
diff --git a/man/CMakeLists.txt b/man/CMakeLists.txt
index ce714ec4..90d462a5 100644
--- a/man/CMakeLists.txt
+++ b/man/CMakeLists.txt
@@ -104,10 +104,10 @@ foreach(MAN_PAGE ${MAN_PAGES})
   string(REGEX REPLACE "[1-9]$" "${DOCUMENTATION_FORMAT}" SOURCE_FILE ${MAN_PAGE})
   if(LIBZIP_DO_INSTALL)
     if (DOCUMENTATION_FORMAT MATCHES "html")
-      install(FILES ${PROJECT_BINARY_DIR}/man/${MAN_PAGE} DESTINATION share/doc/${PROJECT_NAME} RENAME ${SOURCE_FILE})
+      install(FILES ${PROJECT_BINARY_DIR}/man/${MAN_PAGE} DESTINATION ${CMAKE_INSTALL_DOCDIR}/${PROJECT_NAME} RENAME ${SOURCE_FILE})
     else()
       string(REGEX REPLACE ".*(.)$" "man\\1" SUBDIR ${MAN_PAGE})
-      install(FILES ${PROJECT_BINARY_DIR}/man/${MAN_PAGE} DESTINATION man/${SUBDIR})
+      install(FILES ${PROJECT_BINARY_DIR}/man/${MAN_PAGE} DESTINATION ${CMAKE_INSTALL_MANDIR}/${SUBDIR})
     endif()
   endif()
   # configure_file does not find out about updates to the sources, and it does not provide a target
@@ -147,9 +147,9 @@ foreach(LINKS_LINE ${MANPAGE_LINKS})
     set(TARGET ${CMAKE_MATCH_2})
     if(LIBZIP_DO_INSTALL)
       if (DOCUMENTATION_FORMAT MATCHES "html")
-	INSTALL(FILES ${PROJECT_BINARY_DIR}/man/${SOURCE}.3 DESTINATION share/doc/${PROJECT_NAME} RENAME ${TARGET}.html)
+	INSTALL(FILES ${PROJECT_BINARY_DIR}/man/${SOURCE}.3 DESTINATION ${CMAKE_INSTALL_DOCDIR}/${PROJECT_NAME} RENAME ${TARGET}.html)
       else()
-	INSTALL(FILES ${PROJECT_BINARY_DIR}/man/${SOURCE}.3 DESTINATION man/man3 RENAME ${TARGET}.3)
+	INSTALL(FILES ${PROJECT_BINARY_DIR}/man/${SOURCE}.3 DESTINATION ${CMAKE_INSTALL_MANDIR}/man3 RENAME ${TARGET}.3)
       endif()
     endif()
   endif()