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Fix discovery of <sys/auxv.h>

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This commit is contained in:
Guillaume Chatelet 2019-01-15 15:42:04 +01:00
parent 347065af95
commit b3bb9048f4
1 changed files with 33 additions and 20 deletions
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53
CMakeLists.txt
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@ -23,8 +23,8 @@ option(BUILD_SHARED_LIBS "Build library as shared." OFF)
include (CheckIncludeFile)
include (CheckSymbolExists)
check_symbol_exists(getauxval sys/auxv.h HAVE_STRONG_GETAUXVAL)
check_include_file(dlfcn.h HAVE_DLFCN_H)
check_symbol_exists(getauxval "sys/auxv.h" HAVE_STRONG_GETAUXVAL)
set(_HDRS
include/cpu_features_macros.h
@ -32,44 +32,55 @@ set(_HDRS
set(_SRCS
include/internal/bit_utils.h
include/internal/linux_features_aggregator.h
include/internal/filesystem.h
include/internal/hwcaps.h
include/internal/stack_line_reader.h
include/internal/string_view.h
src/linux_features_aggregator.c
src/filesystem.c
src/hwcaps.c
src/stack_line_reader.c
src/string_view.c
)
macro(add_linux_detection)
if(NOT (APPLE OR UNIX))
message(FATAL_ERROR "Use of add_linux_detection() on non Linux-like OS")
endif()
list(APPEND _SRCS
include/internal/linux_features_aggregator.h
src/linux_features_aggregator.c
include/internal/hwcaps.h
src/hwcaps.c
include/internal/filesystem.h
src/filesystem.c
include/internal/stack_line_reader.h
src/stack_line_reader.c
include/internal/string_view.h
src/string_view.c
)
endmacro()
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
list(APPEND _HDRS include/cpuinfo_mips.h)
list(APPEND _SRCS src/cpuinfo_mips.c)
add_linux_detection()
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
list(APPEND _HDRS include/cpuinfo_arm.h)
list(APPEND _SRCS src/cpuinfo_arm.c)
add_linux_detection()
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
list(APPEND _HDRS include/cpuinfo_aarch64.h)
list(APPEND _SRCS src/cpuinfo_aarch64.c)
add_linux_detection()
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL "x86_64" OR
CMAKE_SYSTEM_PROCESSOR STREQUAL "AMD64" OR
CMAKE_SYSTEM_PROCESSOR MATCHES "^i.86$")
list(APPEND _HDRS include/cpuinfo_x86.h)
list(APPEND _HDRS include/internal/cpuid_x86.h)
list(APPEND _SRCS src/cpuinfo_x86.c)
# add_linux_detection() is not needed on x86, we fetch the features directly
# from the CPU.
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)")
list(APPEND _HDRS include/cpuinfo_ppc.h)
list(APPEND _SRCS src/cpuinfo_ppc.c)
add_linux_detection()
else()
message(FATAL_ERROR "Unsupported architectures ${CMAKE_SYSTEM_PROCESSOR}")
endif()
add_library(cpu_features
${_HDRS}
${_SRCS}
)
add_library(cpu_features ${_HDRS} ${_SRCS})
target_include_directories(cpu_features
PUBLIC
@ -79,11 +90,13 @@ target_include_directories(cpu_features
include/internal
)
set_target_properties(cpu_features PROPERTIES PUBLIC_HEADER "${_HDRS}")
target_compile_definitions(cpu_features PUBLIC
STACK_LINE_READER_BUFFER_SIZE=1024
HAVE_STRONG_GETAUXVAL=${HAVE_STRONG_GETAUXVAL}
HAVE_DLFCN_H=${HAVE_DLFCN_H}
)
target_compile_definitions(cpu_features PUBLIC STACK_LINE_READER_BUFFER_SIZE=1024)
if(HAVE_DLFCN_H)
target_compile_definitions(cpu_features PRIVATE HAVE_DLFCN_H)
endif()
if(HAVE_STRONG_GETAUXVAL)
target_compile_definitions(cpu_features PRIVATE HAVE_STRONG_GETAUXVAL)
endif()
target_link_libraries(cpu_features PUBLIC ${CMAKE_DL_LIBS})
# The use of shared libraries is discouraged.