diff options
| -rw-r--r-- | CMakeLists.txt | 2 | ||||
| -rw-r--r-- | SetFlags.cmake | 19 |
2 files changed, 16 insertions, 5 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt index a00ed84c6..4c47eb509 100644 --- a/CMakeLists.txt +++ b/CMakeLists.txt @@ -1,4 +1,4 @@ -cmake_minimum_required (VERSION 2.8.10) +cmake_minimum_required (VERSION 2.8.7) # Without this, the MSVC variable isn't defined for MSVC builds ( http://www.cmake.org/pipermail/cmake/2011-November/047130.html ) enable_language(CXX C) diff --git a/SetFlags.cmake b/SetFlags.cmake index 476a15516..34862308f 100644 --- a/SetFlags.cmake +++ b/SetFlags.cmake @@ -205,6 +205,16 @@ macro(enable_profile) endif() endmacro() +#this is a hack because we can't use cmake 2.8.10 because of travis +macro(get_clang_version) + execute_process( + COMMAND "${CMAKE_CXX_COMPILER}" "--version" + OUTPUT_VARIABLE CLANG_VERSION_OUTPUT) + message(${CLANG_VERSION_OUTPUT}) + string(REGEX MATCH "version ([0-9]\\.[0-9])" x ${CLANG_VERSION_OUTPUT}) + set(CLANG_VERSION ${CMAKE_MATCH_1}) +endmacro() + macro(set_exe_flags) # Remove disabling the maximum warning level: # clang does not like a command line that reads -Wall -Wextra -w -Wall -Wextra and does not output any warnings @@ -223,8 +233,9 @@ macro(set_exe_flags) add_flags_cxx("-ffast-math") if ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang") - if ("${CMAKE_CXX_COMPILER_VERSION}" VERSION_LESS 3.0) - message(FATAL_ERROR "MCServer requires clang version 3.0 or higher, version is ${CMAKE_CXX_COMPILER_VERSION}") + get_clang_version() + if ("${CLANG_VERSION}" VERSION_LESS 3.0) + message(FATAL_ERROR "MCServer requires clang version 3.0 or higher, version is ${CLANG_VERSION}") endif() # clang does not provide the __extern_always_inline macro and a part of libm depends on this when using fast-math add_flags_cxx("-D__extern_always_inline=inline") @@ -236,12 +247,12 @@ macro(set_exe_flags) add_flags_cxx("-Wno-error=shadow -Wno-error=old-style-cast -Wno-error=global-constructors") add_flags_cxx("-Wno-error=exit-time-destructors") add_flags_cxx("-Wno-weak-vtables -Wno-switch-enum") - if ("${CMAKE_CXX_COMPILER_VERSION}" VERSION_GREATER 3.0) + if ("${CLANG_VERSION}" VERSION_GREATER 3.0) # flags that are not present in 3.0 add_flags_cxx("-Wno-error=covered-switch-default -Wno-error=missing-variable-declarations") add_flags_cxx("-Wno-implicit-fallthrough -Wno-error=extra-semi") endif() - if ("${CMAKE_CXX_COMPILER_VERSION}" VERSION_GREATER 3.1) + if ("${CLANG_VERSION}" VERSION_GREATER 3.1) # flags introduced in 3.2 add_flags_cxx("-Wno-documentation") endif() |