1 files changed, 103 insertions, 0 deletions
diff --git a/libs/assimp/contrib/draco/cmake/compiler_tests.cmake b/libs/assimp/contrib/draco/cmake/compiler_tests.cmake
new file mode 100644
index 0000000..e781a65
--- /dev/null
+++ b/libs/assimp/contrib/draco/cmake/compiler_tests.cmake
@@ -0,0 +1,103 @@
+if(DRACO_CMAKE_COMPILER_TESTS_CMAKE_)
+  return()
+endif()
+set(DRACO_CMAKE_COMPILER_TESTS_CMAKE_ 1)
+
+include(CheckCSourceCompiles)
+include(CheckCXXSourceCompiles)
+
+# The basic main() macro used in all compile tests.
+set(DRACO_C_MAIN "\nint main(void) { return 0; }")
+set(DRACO_CXX_MAIN "\nint main() { return 0; }")
+
+# Strings containing the names of passed and failed tests.
+set(DRACO_C_PASSED_TESTS)
+set(DRACO_C_FAILED_TESTS)
+set(DRACO_CXX_PASSED_TESTS)
+set(DRACO_CXX_FAILED_TESTS)
+
+macro(draco_push_var var new_value)
+  set(SAVED_${var} ${var})
+  set(${var} ${new_value})
+endmacro()
+
+macro(draco_pop_var var)
+  set(var ${SAVED_${var}})
+  unset(SAVED_${var})
+endmacro()
+
+# Confirms $test_source compiles and stores $test_name in one of
+# $DRACO_C_PASSED_TESTS or $DRACO_C_FAILED_TESTS depending on out come. When the
+# test passes $result_var is set to 1. When it fails $result_var is unset. The
+# test is not run if the test name is found in either of the passed or failed
+# test variables.
+macro(draco_check_c_compiles test_name test_source result_var)
+  unset(C_TEST_PASSED CACHE)
+  unset(C_TEST_FAILED CACHE)
+  string(FIND "${DRACO_C_PASSED_TESTS}" "${test_name}" C_TEST_PASSED)
+  string(FIND "${DRACO_C_FAILED_TESTS}" "${test_name}" C_TEST_FAILED)
+  if(${C_TEST_PASSED} EQUAL -1 AND ${C_TEST_FAILED} EQUAL -1)
+    unset(C_TEST_COMPILED CACHE)
+    message("Running C compiler test: ${test_name}")
+    check_c_source_compiles("${test_source} ${DRACO_C_MAIN}" C_TEST_COMPILED)
+    set(${result_var} ${C_TEST_COMPILED})
+
+    if(${C_TEST_COMPILED})
+      set(DRACO_C_PASSED_TESTS "${DRACO_C_PASSED_TESTS} ${test_name}")
+    else()
+      set(DRACO_C_FAILED_TESTS "${DRACO_C_FAILED_TESTS} ${test_name}")
+      message("C Compiler test ${test_name} failed.")
+    endif()
+  elseif(NOT ${C_TEST_PASSED} EQUAL -1)
+    set(${result_var} 1)
+  else() # ${C_TEST_FAILED} NOT EQUAL -1
+    unset(${result_var})
+  endif()
+endmacro()
+
+# Confirms $test_source compiles and stores $test_name in one of
+# $DRACO_CXX_PASSED_TESTS or $DRACO_CXX_FAILED_TESTS depending on out come. When
+# the test passes $result_var is set to 1. When it fails $result_var is unset.
+# The test is not run if the test name is found in either of the passed or
+# failed test variables.
+macro(draco_check_cxx_compiles test_name test_source result_var)
+  unset(CXX_TEST_PASSED CACHE)
+  unset(CXX_TEST_FAILED CACHE)
+  string(FIND "${DRACO_CXX_PASSED_TESTS}" "${test_name}" CXX_TEST_PASSED)
+  string(FIND "${DRACO_CXX_FAILED_TESTS}" "${test_name}" CXX_TEST_FAILED)
+  if(${CXX_TEST_PASSED} EQUAL -1 AND ${CXX_TEST_FAILED} EQUAL -1)
+    unset(CXX_TEST_COMPILED CACHE)
+    message("Running CXX compiler test: ${test_name}")
+    check_cxx_source_compiles("${test_source} ${DRACO_CXX_MAIN}"
+                              CXX_TEST_COMPILED)
+    set(${result_var} ${CXX_TEST_COMPILED})
+
+    if(${CXX_TEST_COMPILED})
+      set(DRACO_CXX_PASSED_TESTS "${DRACO_CXX_PASSED_TESTS} ${test_name}")
+    else()
+      set(DRACO_CXX_FAILED_TESTS "${DRACO_CXX_FAILED_TESTS} ${test_name}")
+      message("CXX Compiler test ${test_name} failed.")
+    endif()
+  elseif(NOT ${CXX_TEST_PASSED} EQUAL -1)
+    set(${result_var} 1)
+  else() # ${CXX_TEST_FAILED} NOT EQUAL -1
+    unset(${result_var})
+  endif()
+endmacro()
+
+# Convenience macro that confirms $test_source compiles as C and C++.
+# $result_var is set to 1 when both tests are successful, and 0 when one or both
+# tests fail. Note: This macro is intended to be used to write to result
+# variables that are expanded via configure_file(). $result_var is set to 1 or 0
+# to allow direct usage of the value in generated source files.
+macro(draco_check_source_compiles test_name test_source result_var)
+  unset(C_PASSED)
+  unset(CXX_PASSED)
+  draco_check_c_compiles(${test_name} ${test_source} C_PASSED)
+  draco_check_cxx_compiles(${test_name} ${test_source} CXX_PASSED)
+  if(${C_PASSED} AND ${CXX_PASSED})
+    set(${result_var} 1)
+  else()
+    set(${result_var} 0)
+  endif()
+endmacro()