From 0199b3fd17fca361bba4eec93209c0b74c0f7340 Mon Sep 17 00:00:00 2001
From: Charles Karney <charles@karney.com>
Date: Sat, 10 Feb 2018 17:17:27 -0500
Subject: Re-do pull request #451 export CMake targets with PROJ4:: namespace

This version takes to add the include path to the target definition for
cmake 2.8.11 and later.  Also the documentation sticks to the existing
convention of using cmake variables ${PROJ4_LIBRARIES} and
${PROJ4_INCLUDE_DIRS}.  However, the namespace variables are still being
included.

Here's the roll-out plan

(0) Version 4.9.x: The target is proj and PROJ4_LIBRARIES is set to
this.

(1) Version 5.0.x: Two targets, proj and PROJ4::proj, are defined;
PROJ4_LIBRARIES = proj.

(2) In a year or two: Two targets, proj and PROJ4::proj, are defined;
PROJ4_LIBRARIES = PROJ4::proj.

(3) With a change in the library which breaks backwards compatibility:
The target is PROJ4::proj and PROJ4_LIBRARIES = PROJ4::proj.
---
 src/lib_proj.cmake | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src')

diff --git a/src/lib_proj.cmake b/src/lib_proj.cmake
index f1337a54..c9e4d9e6 100644
--- a/src/lib_proj.cmake
+++ b/src/lib_proj.cmake
@@ -284,6 +284,10 @@ add_library( ${PROJ_CORE_TARGET}
                     ${ALL_LIBPROJ_HEADERS}
                     ${PROJ_RESOURCES}  )
 
+if (NOT CMAKE_VERSION VERSION_LESS 2.8.11)
+  target_include_directories (${PROJ_CORE_TARGET} INTERFACE
+    $<INSTALL_INTERFACE:${INCLUDEDIR}>)
+endif ()
 
 if(WIN32)
   set_target_properties(${PROJ_CORE_TARGET}
-- 
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