mirror of
https://github.com/Cisco-Talos/clamav.git
synced 2025-10-19 10:23:17 +00:00
106 lines
3.6 KiB
CMake
106 lines
3.6 KiB
CMake
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#
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# Check if file descriptor passing is supported
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# Derived from work submitted by Richard Lyons <frob-clamav@webcentral.com.au>
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#
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GET_FILENAME_COMPONENT(_selfdir_CheckFDPassing
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"${CMAKE_CURRENT_LIST_FILE}" PATH)
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include(CheckSymbolExists)
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check_symbol_exists(recvmsg "sys/socket.h" HAVE_RECVMSG)
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check_symbol_exists(sendmsg "sys/socket.h" HAVE_SENDMSG)
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# Extra -D Compile Definitions for check_c_source_compiles()
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set(CMAKE_REQUIRED_DEFINITIONS "")
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if(HAVE_SYS_TYPES_H)
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set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS};-DHAVE_SYS_TYPES_H=1")
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endif()
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if(HAVE_SYS_UIO_H)
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set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS};-DHAVE_SYS_UIO_H=1")
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endif()
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# Check for msg_control field in struct msghdr
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check_c_source_compiles(
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"
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#define _XOPEN_SOURCE 500
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <sys/socket.h>
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#ifdef HAVE_SYS_UIO_H
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# include <sys/uio.h>
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#endif
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int main(void) {
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#ifdef msg_control
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# error msg_control defined
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#endif
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struct msghdr m;
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m.msg_control = 0;
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return 0;
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}
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"
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HAVE_CONTROL_IN_MSGHDR )
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if(HAVE_CONTROL_IN_MSGHDR)
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#
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# Check whether BSD 4.4 / RFC2292 style fd passing works
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#
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set(EXTRA_COMPILE_DEFINITIONS "")
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if(HAVE_SYS_TYPES_H)
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set(EXTRA_COMPILE_DEFINITIONS "${EXTRA_COMPILE_DEFINITIONS} -DHAVE_SYS_TYPES_H=1")
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endif()
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if(HAVE_SYS_UIO_H)
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set(EXTRA_COMPILE_DEFINITIONS "${EXTRA_COMPILE_DEFINITIONS} -DHAVE_SYS_UIO_H=1")
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endif()
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# Try without _XOPEN_SOURCE first
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try_run(
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# Name of variable to store the run result (process exit status; number) in:
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test_run_result
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# Name of variable to store the compile result (TRUE or FALSE) in:
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test_compile_result
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# Binary directory:
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${CMAKE_CURRENT_BINARY_DIR}
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# Source file to be compiled:
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${_selfdir_CheckFDPassing}/CheckFDPassing.c
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# Extra -D Compile Definitions
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COMPILE_DEFINITIONS ${EXTRA_COMPILE_DEFINITIONS}
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# Where to store the output produced during compilation:
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COMPILE_OUTPUT_VARIABLE test_compile_output
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# Where to store the output produced by running the compiled executable:
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RUN_OUTPUT_VARIABLE test_run_output )
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# Did compilation succeed and process return 0 (success)?
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if("${test_compile_result}" AND ("${test_run_result}" EQUAL 0))
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set(HAVE_FD_PASSING 1)
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else()
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# Try again, this time with: #define _XOPEN_SOURCE 500
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set(EXTRA_COMPILE_DEFINITIONS "${EXTRA_COMPILE_DEFINITIONS} -D_XOPEN_SOURCE=500")
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try_run(
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# Name of variable to store the run result (process exit status; number) in:
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test_run_result
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# Name of variable to store the compile result (TRUE or FALSE) in:
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test_compile_result
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# Binary directory:
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${CMAKE_CURRENT_BINARY_DIR}
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# Source file to be compiled:
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${_selfdir_CheckFDPassing}/CheckFDPassing.c
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# Extra -D Compile Definitions
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COMPILE_DEFINITIONS ${EXTRA_COMPILE_DEFINITIONS}
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# Where to store the output produced during compilation:
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COMPILE_OUTPUT_VARIABLE test_compile_output
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# Where to store the output produced by running the compiled executable:
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RUN_OUTPUT_VARIABLE test_run_output )
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# Did compilation succeed and process return 0 (success)?
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if("${test_compile_result}" AND ("${test_run_result}" EQUAL 0))
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set(HAVE_FD_PASSING 1)
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set(FDPASS_NEED_XOPEN 1)
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endif()
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endif()
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endif()
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