From 71794914928d0d2649922d090fba1230981ddd1f Mon Sep 17 00:00:00 2001
From: Even Rouault <even.rouault@spatialys.com>
Date: Sat, 9 Oct 2021 18:54:00 +0200
Subject: CMake build: generate invproj/invgeod binaries (symlinks on Unix,
 copy otherwise) (fixes #2852)

---
 src/bin_geod.cmake | 32 ++++++++++++++++++++++++++++++++
 src/bin_proj.cmake | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 64 insertions(+)

(limited to 'src')

diff --git a/src/bin_geod.cmake b/src/bin_geod.cmake
index 4ec28b04..4d91628a 100644
--- a/src/bin_geod.cmake
+++ b/src/bin_geod.cmake
@@ -18,3 +18,35 @@ install(TARGETS geod
 if(MSVC AND BUILD_SHARED_LIBS)
   target_compile_definitions(geod PRIVATE PROJ_MSVC_DLL_IMPORT=1)
 endif()
+
+# invgeod target: symlink or copy of geod executable
+
+set(link_target "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/invgeod${CMAKE_EXECUTABLE_SUFFIX}")
+set(link_source "geod${CMAKE_EXECUTABLE_SUFFIX}")
+
+if(UNIX)
+    add_custom_command(
+      OUTPUT ${link_target}
+      COMMAND ${CMAKE_COMMAND} -E create_symlink ${link_source} ${link_target}
+      WORKING_DIRECTORY "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}"
+      DEPENDS geod
+      COMMENT "Generating invgeod"
+      VERBATIM
+    )
+else()
+    # symlinks are supported on Windows in cmake >= 3.17, but
+    # symlinks on Windows are a bit tricky, so just copy
+
+    add_custom_command(
+      OUTPUT ${link_target}
+      COMMAND ${CMAKE_COMMAND} -E copy ${link_source} ${link_target}
+      WORKING_DIRECTORY "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}"
+      DEPENDS geod
+      COMMENT "Generating invgeod"
+      VERBATIM
+    )
+endif()
+
+add_custom_target(invgeod ALL DEPENDS ${link_target})
+
+install(FILES ${link_target} DESTINATION ${BINDIR})
diff --git a/src/bin_proj.cmake b/src/bin_proj.cmake
index b5a4c140..2976b3da 100644
--- a/src/bin_proj.cmake
+++ b/src/bin_proj.cmake
@@ -19,3 +19,35 @@ install(TARGETS binproj
 if(MSVC AND BUILD_SHARED_LIBS)
   target_compile_definitions(binproj PRIVATE PROJ_MSVC_DLL_IMPORT=1)
 endif()
+
+# invproj target: symlink or copy of proj executable
+
+set(link_target "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/invproj${CMAKE_EXECUTABLE_SUFFIX}")
+set(link_source "proj${CMAKE_EXECUTABLE_SUFFIX}")
+
+if(UNIX)
+    add_custom_command(
+      OUTPUT ${link_target}
+      COMMAND ${CMAKE_COMMAND} -E create_symlink ${link_source} ${link_target}
+      WORKING_DIRECTORY "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}"
+      DEPENDS binproj
+      COMMENT "Generating invproj"
+      VERBATIM
+    )
+else()
+    # symlinks are supported on Windows in cmake >= 3.17, but
+    # symlinks on Windows are a bit tricky, so just copy
+
+    add_custom_command(
+      OUTPUT ${link_target}
+      COMMAND ${CMAKE_COMMAND} -E copy ${link_source} ${link_target}
+      WORKING_DIRECTORY "${CMAKE_RUNTIME_OUTPUT_DIRECTORY}"
+      DEPENDS binproj
+      COMMENT "Generating invproj"
+      VERBATIM
+    )
+endif()
+
+add_custom_target(invproj ALL DEPENDS ${link_target})
+
+install(FILES ${link_target} DESTINATION ${BINDIR})
-- 
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