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Build: Move platform detection to its own module

This commit is contained in:
Peter Keresztes Schmidt 2021-02-08 21:46:38 +01:00
parent 4d0800151a
commit 36253048f5
2 changed files with 47 additions and 48 deletions
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60
CMakeLists.txt
View File

@ -31,28 +31,6 @@ endif()
#set(CMAKE_VERBOSE_MAKEFILE ON) #set(CMAKE_VERBOSE_MAKEFILE ON)
#set(CMAKE_INSTALL_ALWAYS ON) #set(CMAKE_INSTALL_ALWAYS ON)
# Host OS Check
set(HOST_OS "")
if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
set(HOST_OS "linux")
endif()
if(${CMAKE_SYSTEM_NAME} MATCHES ".*(SunOS|Solaris).*")
set(HOST_OS "solaris")
set(SOLARIS 1)
endif()
if(${CMAKE_SYSTEM_NAME} MATCHES ".*BSD.*")
set(HOST_OS "BSD")
set(BSD 1)
endif()
if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
set(HOST_OS "darwin")
endif()
if(NOT HOST_OS)
message(FATAL_ERROR
"ZoneMinder was unable to deterimine the host OS. Please report this.
Value of CMAKE_SYSTEM_NAME: ${CMAKE_SYSTEM_NAME}")
endif()
set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
# Default CLFAGS and CXXFLAGS: # Default CLFAGS and CXXFLAGS:
@ -66,38 +44,24 @@ set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/") set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/cmake/Modules/")
set(CMAKE_CXX_STANDARD 11) set(CMAKE_CXX_STANDARD 11)
include(CheckPlatform)
# GCC below 6.0 doesn't support __target__("fpu=neon") attribute, required for compiling ARM Neon code, otherwise compilation fails. # GCC below 6.0 doesn't support __target__("fpu=neon") attribute, required for compiling ARM Neon code, otherwise compilation fails.
# Must use -mfpu=neon compiler flag instead, but only do that for processors that support neon, otherwise strip the neon code alltogether, # Must use -mfpu=neon compiler flag instead, but only do that for processors that support neon, otherwise strip the neon code alltogether,
# because passing -fmpu=neon is unsafe to processors that don't support neon # because passing -fmpu=neon is unsafe to processors that don't support neon
# Arm neon support only tested on Linux. If your arm hardware is running a non-Linux distro and is using gcc then contact us. # Arm neon support only tested on Linux. If your arm hardware is running a non-Linux distro and is using gcc then contact us.
if(CMAKE_SYSTEM_NAME MATCHES "Linux") if(ZM_SYSTEM_PROC MATCHES "^arm")
string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" ZM_SYSTEM_PROC) if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
if((ZM_SYSTEM_PROC STREQUAL "") OR (ZM_SYSTEM_PROC STREQUAL "unknown")) exec_program(grep ARGS " neon " "/proc/cpuinfo" OUTPUT_VARIABLE neonoutput RETURN_VALUE neonresult)
execute_process(COMMAND uname -m OUTPUT_VARIABLE ZM_SYSTEM_PROC ERROR_VARIABLE ZM_SYSTEM_PROC_ERR) if(neonresult EQUAL 0)
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -mfpu=neon")
# maybe make the following error checks fatal set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -mfpu=neon")
if(ZM_SYSTEM_PROC_ERR) set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -mfpu=neon")
message(WARNING "\nAn error occurred while attempting to determine the system processor:\n${ZM_SYSTEM_PROC_ERR}") set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -mfpu=neon")
endif() else()
if(NOT ZM_SYSTEM_PROC) add_definitions(-DZM_STRIP_NEON=1)
message(WARNING "\nUnable to determine the system processor. This may cause a build failure.\n") message(STATUS "ARM Neon is not available on this processor. Neon functions will be absent")
endif()
endif()
if(ZM_SYSTEM_PROC MATCHES "^arm")
if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_CXX_COMPILER_VERSION VERSION_LESS 6.0)
exec_program(grep ARGS " neon " "/proc/cpuinfo" OUTPUT_VARIABLE neonoutput RETURN_VALUE neonresult)
if(neonresult EQUAL 0)
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -mfpu=neon")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -mfpu=neon")
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -mfpu=neon")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -mfpu=neon")
else()
add_definitions(-DZM_STRIP_NEON=1)
message(STATUS "ARM Neon is not available on this processor. Neon functions will be absent")
endif()
endif() endif()
endif() endif()
endif() endif()

35
cmake/Modules/CheckPlatform.cmake Normal file
View File

@ -0,0 +1,35 @@
set(HOST_OS "")
if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
set(HOST_OS "linux")
endif()
if(${CMAKE_SYSTEM_NAME} MATCHES ".*(SunOS|Solaris).*")
set(HOST_OS "solaris")
set(SOLARIS 1)
endif()
if(${CMAKE_SYSTEM_NAME} MATCHES ".*BSD.*")
set(HOST_OS "BSD")
set(BSD 1)
endif()
if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
set(HOST_OS "darwin")
endif()
if(NOT HOST_OS)
message(FATAL_ERROR
"ZoneMinder was unable to deterimine the host OS. Please report this.
Value of CMAKE_SYSTEM_NAME: ${CMAKE_SYSTEM_NAME}")
endif()
if(CMAKE_SYSTEM_NAME MATCHES "Linux")
string(TOLOWER "${CMAKE_SYSTEM_PROCESSOR}" ZM_SYSTEM_PROC)
if((ZM_SYSTEM_PROC STREQUAL "") OR (ZM_SYSTEM_PROC STREQUAL "unknown"))
execute_process(COMMAND uname -m OUTPUT_VARIABLE ZM_SYSTEM_PROC ERROR_VARIABLE ZM_SYSTEM_PROC_ERR)
# maybe make the following error checks fatal
if(ZM_SYSTEM_PROC_ERR)
message(WARNING "\nAn error occurred while attempting to determine the system processor:\n${ZM_SYSTEM_PROC_ERR}")
endif()
if(NOT ZM_SYSTEM_PROC)
message(WARNING "\nUnable to determine the system processor. This may cause a build failure.\n")
endif()
endif()
endif()