liblzma: Disable inline assembly when compiled with conflicting flag

7 months ago · 8f9b5ff8d6
1 changed files with 5 additions and 0 deletions
--- a/Utilities/cmliblzma/CMakeLists.txt
+++ b/Utilities/cmliblzma/CMakeLists.txt
@ -176,6 +176,11 @@ endif()

 ADD_LIBRARY(cmliblzma STATIC ${LZMA_SRCS})

+# Disable inline assembly in a case where it does not compile.
+if(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_C_FLAGS MATCHES "-ftrapv")
+  set_property(SOURCE liblzma/lzma/lzma_decoder.c PROPERTY COMPILE_DEFINITIONS LZMA_RANGE_DECODER_CONFIG=0)
+endif()
+
 IF(CMAKE_C_COMPILER_ID STREQUAL "XL")
  # Disable the XL compiler optimizer because it causes crashes
  # and other bad behavior in liblzma code.