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Code Issues Releases Activity

Replaced unreliable kernel version based check by compilation check.

This commit is contained in:
Pavel Odintsov 2022-02-09 14:27:32 +00:00
parent 37b603ab98
commit 21186d13e5
1 changed files with 13 additions and 16 deletions
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29
src/CMakeLists.txt
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@ -187,23 +187,20 @@ if (ENABLE_SNABBSWITCH_SUPPORT)
target_link_libraries(snabbswitch_plugin snabb)
endif()
if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
execute_process(COMMAND uname -r OUTPUT_VARIABLE LINUX_KERNEL_VERSION OUTPUT_STRIP_TRAILING_WHITESPACE)
# Extract major version number from Linux Kernel Version
string(REGEX MATCH "^[0-9]+\\.[0-9]+" KERNEL_VERSION_MATCHES ${LINUX_KERNEL_VERSION})
# For tests
# set(KERNEL_VERSION_MATCHES "2.6.32")
CHECK_CXX_SOURCE_COMPILES("
#include <cstdint>
#include <linux/if_packet.h>
int main() {
return TPACKET_V3;
}
" HAVE_TPACKET_V3)
# We need 3.7 or more recent kernel here because older kernels are buggy
# VERSION_GREATER comparator available from cmake 2.6.2
if (${KERNEL_VERSION_MATCHES} VERSION_GREATER "3.7")
message(STATUS "You are running Linux with enough recent kernel and we can build AF_PACKET support")
set (ENABLE_AFPACKET_SUPPORT ON)
else()
message(STATUS "You are running old Linux kernel and we can't build AF_PACKET support")
endif()
if (${HAVE_TPACKET_V3})
message(STATUS "Your system has support for AF_PACKET v3")
set (ENABLE_AFPACKET_SUPPORT ON)
else()
message(STATUS "Your system does not support AF_PACKET v3, disabled it")
endif()
# -DENABLE_AFPACKET_SUPPORT=ON ..