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Refactoring cmake files
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I'm working on adding an option to build the tools.  There are some options
that are common to all targets, and some that only apply to the clientlib.

WIP.  The cert tool doesn't build yet, but everything else still should work,
so checking it in.
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@zpostfacto
zpostfacto committed Nov 24, 2021
1 parent 1de57b8 commit e5bfae4
Showing 1 changed file with 120 additions and 68 deletions.
188 changes: 120 additions & 68 deletions src/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -7,31 +7,19 @@ include(GNUInstallDirs)
find_package(Protobuf REQUIRED)
find_package(Threads REQUIRED)

set(GNS_PROTOS
set(GNS_COMMON_PROTOS
"common/steamnetworkingsockets_messages_certs.proto"
"common/steamnetworkingsockets_messages.proto"
)
set(GNS_CLIENTLIB_PROTOS
"common/steamnetworkingsockets_messages_udp.proto"
)

set(GNS_SRCS
"common/crypto.cpp"
"common/crypto_textencode.cpp"
"common/keypair.cpp"
set(GNS_COMMON_SRCS
"common/steamid.cpp"
"steamnetworkingsockets/clientlib/csteamnetworkingsockets.cpp"
"steamnetworkingsockets/clientlib/csteamnetworkingmessages.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_flat.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_connections.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_p2p.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_p2p_ice.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_snp.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_udp.cpp"
"steamnetworkingsockets/steamnetworkingsockets_certs.cpp"
"steamnetworkingsockets/steamnetworkingsockets_certstore.cpp"
"steamnetworkingsockets/steamnetworkingsockets_shared.cpp"
"steamnetworkingsockets/steamnetworkingsockets_stats.cpp"
"steamnetworkingsockets/steamnetworkingsockets_thinker.cpp"
"tier0/dbg.cpp"
"tier0/platformtime.cpp"
"tier1/netadr.cpp"
Expand All @@ -41,46 +29,66 @@ set(GNS_SRCS
"vstdlib/strtools.cpp"
)

set(GNS_CLIENTLIB_SRCS
"steamnetworkingsockets/steamnetworkingsockets_stats.cpp"
"steamnetworkingsockets/steamnetworkingsockets_thinker.cpp"
"steamnetworkingsockets/clientlib/csteamnetworkingsockets.cpp"
"steamnetworkingsockets/clientlib/csteamnetworkingmessages.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_flat.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_connections.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_lowlevel.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_p2p.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_p2p_ice.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_snp.cpp"
"steamnetworkingsockets/clientlib/steamnetworkingsockets_udp.cpp"
)

set(GNS_CRYPTO_SRCS
"common/crypto.cpp"
"common/crypto_textencode.cpp"
"common/keypair.cpp"
)

if(USE_CRYPTO STREQUAL "BCrypt")
set(GNS_CRYPTO_DEFINES ${GNS_CRYPTO_DEFINES} STEAMNETWORKINGSOCKETS_CRYPTO_BCRYPT ED25519_HASH_BCRYPT)
set(GNS_SRCS ${GNS_SRCS}
set(GNS_CRYPTO_SRCS ${GNS_CRYPTO_SRCS}
"common/crypto_bcrypt.cpp"
)
endif()

if(USE_CRYPTO STREQUAL "OpenSSL")
set(GNS_CRYPTO_DEFINES ${GNS_CRYPTO_DEFINES} STEAMNETWORKINGSOCKETS_CRYPTO_VALVEOPENSSL)
set(GNS_SRCS ${GNS_SRCS}
set(GNS_CRYPTO_SRCS ${GNS_CRYPTO_SRCS}
"common/crypto_openssl.cpp"
"common/opensslwrapper.cpp"
)
endif()

if(USE_CRYPTO STREQUAL "libsodium")
set(GNS_CRYPTO_DEFINES ${GNS_CRYPTO_DEFINES} STEAMNETWORKINGSOCKETS_CRYPTO_LIBSODIUM)
set(GNS_SRCS ${GNS_SRCS}
set(GNS_CRYPTO_SRCS ${GNS_CRYPTO_SRCS}
"common/crypto_libsodium.cpp")
endif()

# Use OpenSSL for 25519 if possible
if(USE_CRYPTO25519 STREQUAL "OpenSSL")
set(GNS_CRYPTO_DEFINES ${GNS_CRYPTO_DEFINES} STEAMNETWORKINGSOCKETS_CRYPTO_25519_OPENSSL)
set(GNS_SRCS ${GNS_SRCS}
set(GNS_CRYPTO_SRCS ${GNS_CRYPTO_SRCS}
"common/crypto_25519_openssl.cpp"
)
endif()

if(USE_CRYPTO25519 STREQUAL "libsodium")
set(GNS_CRYPTO_DEFINES ${GNS_CRYPTO_DEFINES} STEAMNETWORKINGSOCKETS_CRYPTO_25519_LIBSODIUM)
set(GNS_SRCS ${GNS_SRCS}
set(GNS_CRYPTO_SRCS ${GNS_CRYPTO_SRCS}
"common/crypto_25519_libsodium.cpp"
)
endif()

# Use reference 25519 crypto implementation?
if(USE_CRYPTO25519 STREQUAL "Reference")
set(GNS_CRYPTO_DEFINES ${GNS_CRYPTO_DEFINES} VALVE_CRYPTO_25519_DONNA)
set(GNS_SRCS ${GNS_SRCS}
set(GNS_CRYPTO_SRCS ${GNS_CRYPTO_SRCS}
"common/crypto_25519_donna.cpp"
"external/curve25519-donna/curve25519.c"
"external/curve25519-donna/curve25519_VALVE_sse2.c"
Expand Down Expand Up @@ -146,12 +154,64 @@ if(NOT SANITIZE_UNDEFINED)
)
endif()

protobuf_generate_cpp(GNS_PROTO_SRCS GNS_PROTO_HDRS ${GNS_PROTOS})
protobuf_generate_cpp(GNS_COMMON_PROTO_SRCS GNS_COMMON_PROTO_HDRS ${GNS_COMMON_PROTOS})
protobuf_generate_cpp(GNS_CLIENTLIB_PROTO_SRCS GNS_CLIENTLIB_PROTO_HDRS ${GNS_CLIENTLIB_PROTOS})

function(gns_set_target_protobuf_properties TGT )
target_include_directories(${TGT} PRIVATE

# Only necessary if we're not using protobuf::libprotobuf
# But that's not supported until CMake 3.9
${Protobuf_INCLUDE_DIRS}
)

target_link_libraries(${TGT} PUBLIC
# protobuf::libprotobuf
${PROTOBUF_LIBRARIES}
Threads::Threads
)
endfunction()

# Set the target properties (sources, link libs, defines) based on crypto settings
function(gns_set_target_crypto_properties TGT)
if(USE_CRYPTO STREQUAL "OpenSSL" OR USE_CRYPTO25519 STREQUAL "OpenSSL")
target_link_libraries(${TGT} PUBLIC
OpenSSL::Crypto
)
if(WIN32 AND OPENSSL_USE_STATIC_LIBS)
target_link_libraries(${TGT} PUBLIC
ws2_32
crypt32
)
endif()
endif()

if(USE_CRYPTO STREQUAL "libsodium" OR USE_CRYPTO25519 STREQUAL "libsodium")
target_link_libraries(${TGT} PUBLIC
sodium
)
endif()

target_compile_definitions(${TGT} PRIVATE
ENABLE_OPENSSLCONNECTION # !KLUDGE! This is for some weird 25519 thing, somebody using the wrong define
${GNS_CRYPTO_DEFINES}
)

target_sources(${TGT} PRIVATE ${GNS_CRYPTO_SRCS})

if(SANITIZE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
target_compile_definitions(${TGT} PRIVATE ED25519_NO_INLINE_ASM)
endif()
endfunction()

macro(gamenetworkingsockets_common GNS_TARGET)
# Set properties on a clientlib target (either shared or static library)
macro(set_clientlib_target_properties GNS_TARGET)

target_sources(${GNS_TARGET} PRIVATE ${GNS_SRCS})
target_sources(${GNS_TARGET} PRIVATE ${GNS_PROTO_SRCS})
target_sources(${GNS_TARGET} PRIVATE
${GNS_COMMON_SRCS}
${GNS_CLIENTLIB_SRCS}
${GNS_COMMON_PROTO_SRCS}
${GNS_CLIENTLIB_PROTO_SRCS})

set_target_common_gns_properties( ${GNS_TARGET} )

Expand All @@ -164,17 +224,13 @@ macro(gamenetworkingsockets_common GNS_TARGET)
"common"
"public"
${CMAKE_CURRENT_BINARY_DIR}

# Only necessary if we're not using protobuf::libprotobuf
# But that's not supported until CMake 3.9
${Protobuf_INCLUDE_DIRS}
)

target_link_libraries(${GNS_TARGET} PUBLIC
# protobuf::libprotobuf
${PROTOBUF_LIBRARIES}
Threads::Threads
)
gns_set_target_protobuf_properties(${GNS_TARGET})
gns_set_target_crypto_properties(${GNS_TARGET})

target_compile_definitions(${GNS_TARGET} PRIVATE
STEAMNETWORKINGSOCKETS_FOREXPORT )

# Enable ICE?
if(USE_STEAMWEBRTC)
Expand All @@ -194,34 +250,6 @@ macro(gamenetworkingsockets_common GNS_TARGET)
)
endif()

if(USE_CRYPTO STREQUAL "OpenSSL" OR USE_CRYPTO25519 STREQUAL "OpenSSL")
target_link_libraries(${GNS_TARGET} PUBLIC
OpenSSL::Crypto
)
if(WIN32 AND OPENSSL_USE_STATIC_LIBS)
target_link_libraries(${GNS_TARGET} PUBLIC
ws2_32
crypt32
)
endif()
endif()

if(USE_CRYPTO STREQUAL "libsodium" OR USE_CRYPTO25519 STREQUAL "libsodium")
target_link_libraries(${GNS_TARGET} PUBLIC
sodium
)
endif()

target_compile_definitions(${GNS_TARGET} PRIVATE
STEAMNETWORKINGSOCKETS_FOREXPORT
ENABLE_OPENSSLCONNECTION
CRYPTO_DISABLE_ENCRYPT_WITH_PASSWORD
${GNS_CRYPTO_DEFINES}
)

if(SANITIZE AND CMAKE_CXX_COMPILER_ID MATCHES "Clang")
target_compile_definitions(${GNS_TARGET} PRIVATE ED25519_NO_INLINE_ASM)
endif()

## Needs CMake 3.8, then we could get rid of the workaround below it.
#target_compile_features(${GNS_TARGET} PUBLIC c_std_99 cxx_std_11)
Expand Down Expand Up @@ -295,15 +323,40 @@ if (BUILD_SHARED_LIB)
add_library(GameNetworkingSockets SHARED "")
add_library(GameNetworkingSockets::GameNetworkingSockets ALIAS GameNetworkingSockets)
add_library(GameNetworkingSockets::shared ALIAS GameNetworkingSockets)
gamenetworkingsockets_common(GameNetworkingSockets)
set_clientlib_target_properties(GameNetworkingSockets)
endif()

if (BUILD_STATIC_LIB)
add_library(GameNetworkingSockets_s STATIC "")
add_library(GameNetworkingSockets::GameNetworkingSockets_s ALIAS GameNetworkingSockets_s)
add_library(GameNetworkingSockets::static ALIAS GameNetworkingSockets_s)
target_compile_definitions(GameNetworkingSockets_s INTERFACE STEAMNETWORKINGSOCKETS_STATIC_LINK)
gamenetworkingsockets_common(GameNetworkingSockets_s)
set_clientlib_target_properties(GameNetworkingSockets_s)
endif()

if (BUILD_TOOLS)
add_executable(steamnetworkingsockets_certtool
"steamnetworkingsockets/certtool/steamnetworkingsockets_certtool.cpp"
)
target_sources(steamnetworkingsockets_certtool PRIVATE
${GNS_COMMON_SRCS}
${GNS_COMMON_PROTO_SRCS})

set_target_common_gns_properties( steamnetworkingsockets_certtool )

target_include_directories(steamnetworkingsockets_certtool PUBLIC
"$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include>"
"$<INSTALL_INTERFACE:$<INSTALL_PREFIX>/${CMAKE_INSTALL_INCLUDEDIR}/GameNetworkingSockets>"
)

target_include_directories(steamnetworkingsockets_certtool PRIVATE
"common"
"public"
${CMAKE_CURRENT_BINARY_DIR}
)

gns_set_target_protobuf_properties(steamnetworkingsockets_certtool)
gns_set_target_crypto_properties(steamnetworkingsockets_certtool)
endif()

install(DIRECTORY ../include/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/GameNetworkingSockets)
Expand All @@ -317,8 +370,8 @@ install(

include(CMakePackageConfigHelpers)

# Ensure that variables used in GameNetworkingSocketsConfig.cmake.in have some value
# rather than an empty string.
# Ensure that variables used in GameNetworkingSocketsConfig.cmake.in have some value
# rather than an empty string.
if(NOT USE_CRYPTO)
set(USE_CRYPTO USE_CRYPTO-NOTFOUND)
endif()
Expand All @@ -338,4 +391,3 @@ install(FILES
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/GameNetworkingSockets
)

# vim: set ts=4 sts=4 sw=4 noet:

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