From d7a705ccaa0bbecf80e5780b57dd0faccd14b95a Mon Sep 17 00:00:00 2001
From: Jonas Schuhmacher <jonas.schuhmacher@tum.de>
Date: Tue, 10 Dec 2024 15:06:06 +0100
Subject: [PATCH] update tetgen handling to avoid CMake deprecation warning

---
 cmake/tetgen.cmake | 59 ++++++++++++++++++++++------------------------
 1 file changed, 28 insertions(+), 31 deletions(-)

diff --git a/cmake/tetgen.cmake b/cmake/tetgen.cmake
index 3e56303..1788ab0 100644
--- a/cmake/tetgen.cmake
+++ b/cmake/tetgen.cmake
@@ -3,47 +3,44 @@ include(FetchContent)
 message(STATUS "Setting up tetgen")
 
 # IMPORTANT NOTE
-# We do ot use findPackage here, as we modify the one source file slightly to suppress output via stdout!!!
+# We do not use find_package here, as we modify the one source file slightly to suppress output via stdout!!!
 
-#Fetches the version 1.6 for tetgen
+# Fetches the version 1.6 for tetgen
 FetchContent_Declare(tetgen
         GIT_REPOSITORY https://github.com/libigl/tetgen.git
         GIT_TAG 4f3bfba3997f20aa1f96cfaff604313a8c2c85b6 # release 1.6
-        )
+)
 
-FetchContent_GetProperties(tetgen)
-if(NOT tetgen_POPULATED)
-    FetchContent_Populate(tetgen)
+FetchContent_MakeAvailable(tetgen)
 
-    # This is ugly, but functional
-    # We modify one source file in order to prevent console output from the printf function
-    # without polluting the global include path (which would cause to more uglier issues)
-    if(NOT EXISTS ${tetgen_SOURCE_DIR}/tetgen_mod.cxx)
-        message(STATUS "Creating modified tetgen.cxx in order to prevent console output from library")
-        file(READ ${tetgen_SOURCE_DIR}/tetgen.cxx TETGEN_CXX)
+# Modify the tetgen library to suppress console output from the printf function
+if(NOT EXISTS ${tetgen_SOURCE_DIR}/tetgen_mod.cxx)
+    message(STATUS "Creating modified tetgen.cxx in order to prevent console output from library")
+    file(READ ${tetgen_SOURCE_DIR}/tetgen.cxx TETGEN_CXX)
 
-        string(REPLACE
-                "#include \"tetgen.h\""
-                "#include \"tetgen.h\"\n#define printf(fmt, ...) (0)\n"
-                TETGEN_CXX "${TETGEN_CXX}")
+    string(REPLACE
+            "#include \"tetgen.h\""
+            "#include \"tetgen.h\"\n#define printf(fmt, ...) (0)\n"
+            TETGEN_CXX "${TETGEN_CXX}")
 
-        file(WRITE ${tetgen_SOURCE_DIR}/tetgen_mod.cxx
-                "${TETGEN_CXX}"
-                )
-    else()
-        message(STATUS "A modified tetgen.cxx already exists! It is assumed that is the correct one disabling output")
-    endif()
-
-    add_library(tetgen STATIC
-            ${tetgen_SOURCE_DIR}/tetgen_mod.cxx
-            ${tetgen_SOURCE_DIR}/predicates.cxx
-            )
+    file(WRITE ${tetgen_SOURCE_DIR}/tetgen_mod.cxx
+            "${TETGEN_CXX}"
+    )
+else()
+    message(STATUS "A modified tetgen.cxx already exists! It is assumed that it is the correct one disabling output")
+endif()
 
-    target_compile_definitions(tetgen PRIVATE -DTETLIBRARY)
+# Add the modified version of the tetgen library
+add_library(tetgen_lib STATIC
+        ${tetgen_SOURCE_DIR}/tetgen_mod.cxx
+        ${tetgen_SOURCE_DIR}/predicates.cxx
+)
 
-    target_include_directories(tetgen INTERFACE "${tetgen_SOURCE_DIR}")
+# Define the TETLIBRARY macro for usage
+target_compile_definitions(tetgen_lib PRIVATE -DTETLIBRARY)
 
-endif()
+# Include the tetgen source directory for the library
+target_include_directories(tetgen_lib INTERFACE "${tetgen_SOURCE_DIR}")
 
 # Disable warnings from the library target
-target_compile_options(tetgen PRIVATE -w)
\ No newline at end of file
+target_compile_options(tetgen_lib PRIVATE -w)
\ No newline at end of file