From 4e402ae5480dad648a9990ce09284bfbc98460b0 Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Tue, 28 Jun 2022 23:09:20 +0800
Subject: [PATCH] build(cmake): fix static `libintl` test on macOS

If `libintl` is a static library on macOS, we also need to explicitly
link with `libiconv` and the `CoreFoundation` framework. Otherwise, our
`HAVE_WORKING_LIBINTL` test erroneously fails.

Closes #19127
Closes #19138
---
 cmake/FindLibIntl.cmake | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/cmake/FindLibIntl.cmake b/cmake/FindLibIntl.cmake
index 09eafb786a..8cc5cb7dd2 100644
--- a/cmake/FindLibIntl.cmake
+++ b/cmake/FindLibIntl.cmake
@@ -41,6 +41,16 @@ endif()
 if (MSVC)
   list(APPEND CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARY})
 endif()
+
+# On macOS, if libintl is a static library then we also need
+# to link libiconv and CoreFoundation.
+get_filename_component(LibIntl_EXT "${LibIntl_LIBRARY}" EXT)
+if (APPLE AND (LibIntl_EXT STREQUAL ".a"))
+  set(LibIntl_STATIC TRUE)
+  find_library(CoreFoundation_FRAMEWORK CoreFoundation)
+  list(APPEND CMAKE_REQUIRED_LIBRARIES "${ICONV_LIBRARY}" "${CoreFoundation_FRAMEWORK}")
+endif()
+
 check_c_source_compiles("
 #include <libintl.h>
 
@@ -54,6 +64,9 @@ int main(int argc, char** argv) {
 if (MSVC)
   list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES ${ICONV_LIBRARY})
 endif()
+if (LibIntl_STATIC)
+  list(REMOVE_ITEM CMAKE_REQUIRED_LIBRARIES  "${ICONV_LIBRARY}" "${CoreFoundation_FRAMEWORK}")
+endif()
 if (LibIntl_INCLUDE_DIR)
   list(REMOVE_ITEM CMAKE_REQUIRED_INCLUDES "${LibIntl_INCLUDE_DIR}")
 endif()