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Fix cmake builds on Windows using MinGW's gcc #108

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Fix cmake builds on Windows using MinGW's gcc #108

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e607b43
Fix cmake builds on Windows using gcc
jclehner Apr 24, 2025
45a56a5
Support building against Npcap SDK
jclehner May 9, 2025
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24 changes: 19 additions & 5 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@ foreach (header stdio.h stdlib.h string.h inttypes.h)
check_include_file(${header} ${var})
endforeach ()

if (MSVC)
if (WIN32)
add_definitions(-DWIN32_LEAN_AND_MEAN)
check_include_file(winsock2.h HAVE_WINSOCK2_H)
set(HAVE_LIBWS2_32 ${HAVE_WINSOCK2_H})
Expand All @@ -36,6 +36,16 @@ if (MSVC)
set(CMAKE_REQUIRED_LIBRARIES "ws2_32")
check_symbol_exists(inet_pton WS2tcpip.h HAVE_INET_PTON)
set(CMAKE_REQUIRED_LIBRARIES )

if (NPCAP_SDK)
get_filename_component(NPCAP_SDK "${NPCAP_SDK}" ABSOLUTE)
set(NPCAP_SDK_INCLUDE "${NPCAP_SDK}/Include")
set(CMAKE_REQUIRED_INCLUDES ${NPCAP_SDK_INCLUDE})
check_include_file(Packet32.h HAVE_PACKET32_H)
set(CMAKE_REQUIRED_INCLUDES )
else()
message(WARNING "NPCAP_SDK not specified; building without Npcap support")
endif()
endif()
if(UNIX)
foreach (header strings.h
Expand Down Expand Up @@ -190,9 +200,8 @@ else()
list(APPEND PLATFORM_SOURCES src/arp-none.c)
endif()

if (HAVE_IPHLPAPI_H)
# no npcap support
# list(APPEND PLATFORM_SOURCES src/eth-win32.c)
if (HAVE_PACKET32_H)
list(APPEND PLATFORM_SOURCES src/eth-win32.c)
elseif(HAVE_NET_PFILT_H)
list(APPEND PLATFORM_SOURCES src/eth-pfilt.c)
elseif(HAVE_LINUX_PF_PACKET)
Expand Down Expand Up @@ -325,8 +334,13 @@ set_target_properties(
PUBLIC_HEADER "${DNET_HEADERS}"
)

if (MSVC)
if (WIN32)
target_link_libraries(${PROJECT_NAME} PUBLIC Iphlpapi ws2_32)
if (HAVE_PACKET32_H)
target_include_directories(${PROJECT_NAME} PUBLIC ${NPCAP_SDK_INCLUDE})
target_link_directories(${PROJECT_NAME} PUBLIC ${NPCAP_SDK}/Libs/)
target_link_libraries(${PROJECT_NAME} PUBLIC Packet)
endif()
endif()

install(TARGETS ${PROJECT_NAME}
Expand Down
2 changes: 1 addition & 1 deletion include/dnet/os.h
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Original file line number Diff line number Diff line change
Expand Up @@ -22,7 +22,7 @@
typedef u_char uint8_t;
typedef u_short uint16_t;
typedef u_int uint32_t;
# ifndef __CYGWIN__
# if !defined(__CYGWIN__) && !defined(__MINGW32__)
typedef long ssize_t;
# endif
#else
Expand Down