In current implementation of ExternalProject_Add generator expressions are supported in CMAKE_ARGS (probably by coincidence), but not in CMAKE_CACHE_ARGS. This patch will enable generators expressions in CMAKE_CACHE_ARGS.
Use case:
set(LIBEV_LIBRARIES $<TARGET_FILE:ev>)
ExternalProject_Add(
...
CMAKE_CACHE_ARGS
-DLIBEV_LIBRARIES=${LIBEV_LIBRARIES}
...)
---
Modules/ExternalProject.cmake | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/Modules/ExternalProject.cmake b/Modules/ExternalProject.cmake
index 0c73d41..1c7cf51 100644
--- a/Modules/ExternalProject.cmake
+++ b/Modules/ExternalProject.cmake
@@ -1126,10 +1126,7 @@ function(_ep_write_initial_cache target_name
script_filename script_initial_cach
# Replace location tags.
_ep_replace_location_tags(${target_name} script_initial_cache)
# Write out the initial cache file to the location specified.
- if(NOT EXISTS "${script_filename}.in")
- file(WRITE "${script_filename}.in" "\@script_initial_cache\@\n")
- endif()
- configure_file("${script_filename}.in" "${script_filename}")
+ file(GENERATE OUTPUT "${script_filename}" CONTENT "${script_initial_cache}")
endfunction()
--
2.3.2 (Apple Git-55)
0001-ExternalProject_Add-Allow-generator-expressions-in-C.patch
Description: Binary data
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