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Fix linking failures when compiled with Clang 9

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sfan5 committed Mar 5, 2020
1 parent e774d8c commit db95ff22865e8aa5eb512a1ac1f2f8715c18e3c8
Showing with 9 additions and 2 deletions.
  1. +9 −2 src/CMakeLists.txt
@@ -696,7 +696,7 @@ else()
set(RELEASE_WARNING_FLAGS "")
endif()

if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
set(WARNING_FLAGS "${WARNING_FLAGS} -Wsign-compare")
endif()
if(APPLE AND USE_LUAJIT)
@@ -713,7 +713,14 @@ else()
if(CMAKE_SYSTEM_NAME MATCHES "(Darwin|BSD|DragonFly)")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -Os")
else()
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -ffast-math -fomit-frame-pointer")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 -fomit-frame-pointer")
if(CMAKE_SYSTEM_NAME STREQUAL "Linux"
AND CMAKE_CXX_COMPILER_ID STREQUAL "Clang"
AND CMAKE_CXX_COMPILER_VERSION MATCHES "^9\\.")
# Clang 9 has broken -ffast-math on glibc
else()
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -ffast-math")
endif()
endif(CMAKE_SYSTEM_NAME MATCHES "(Darwin|BSD|DragonFly)")
set(CMAKE_CXX_FLAGS_SEMIDEBUG "-g -O1 -Wall -Wabi ${WARNING_FLAGS} ${OTHER_FLAGS}")
set(CMAKE_CXX_FLAGS_DEBUG "-g -O0 -Wall -Wabi ${WARNING_FLAGS} ${OTHER_FLAGS}")

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