monero/CMakeLists.txt
redfish f3e09f36d3 cmake: link with -latomic for clang
otherwise clang build fails with

../cryptonote_core/libcryptonote_core.a(miner.cpp.o): In function
`std::__atomic_base<unsigned long long>::load(std::memory_order) const':
/usr/bin/../lib/gcc/i686-pc-linux-gnu/6.1.1/../../../../include/c++/6.1.1/bits/atomic_base.h:396:
undefined reference to `__atomic_load_8'

This has no effect on the gcc build.

The one strange thing is that test code like

std::atomic<int> x;
int main() { return x; }

compiles and links without errors with clang, without -latomic.  This
alone would suggest that this patch is unnecessary, but that is not the
case. It's not clear exactly why, though. The bitmonero code is
including the same header, but it must be doing something more complex
than in this test code snippet that causes the failure at link time
pasted above. In any case, passing -latomic fixes the problem and
seems safe.

.
2016-07-10 21:27:00 -04:00

500 lines
18 KiB
CMake

# Copyright (c) 2014-2016, The Monero Project
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification, are
# permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this list of
# conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice, this list
# of conditions and the following disclaimer in the documentation and/or other
# materials provided with the distribution.
#
# 3. Neither the name of the copyright holder nor the names of its contributors may be
# used to endorse or promote products derived from this software without specific
# prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
# THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
# THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
cmake_minimum_required(VERSION 2.8.7)
project(bitmonero)
function (die msg)
if (NOT WIN32)
string(ASCII 27 Esc)
set(ColourReset "${Esc}[m")
set(BoldRed "${Esc}[1;31m")
else ()
set(ColourReset "")
set(BoldRed "")
endif ()
message(FATAL_ERROR "${BoldRed}${msg}${ColourReset}")
endfunction ()
if ("${ARCH}" STREQUAL "" OR "${ARCH}" STREQUAL "native")
set(ARCH ${CMAKE_SYSTEM_PROCESSOR})
message(STATUS "Building natively on ${ARCH}")
endif()
if (NOT "${ARCH}" STREQUAL "")
string(SUBSTRING ${ARCH} 0 3 IS_ARM)
string(TOLOWER ${IS_ARM} IS_ARM)
if (${IS_ARM} STREQUAL "arm")
string(SUBSTRING ${ARCH} 0 5 ARM_TEST)
string(TOLOWER ${ARM_TEST} ARM_TEST)
if (${ARM_TEST} STREQUAL "armv6")
set(ARM6 1)
else()
set(ARM6 0)
endif()
if (${ARM_TEST} STREQUAL "armv7")
set(ARM7 1)
else()
set(ARM7 0)
endif()
endif()
endif()
if(WIN32 OR ARM7 OR ARM6)
set(CMAKE_C_FLAGS_RELEASE "-O2 -DNDEBUG")
set(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
else()
set(CMAKE_C_FLAGS_RELEASE "-Ofast -DNDEBUG -Wno-unused-variable")
set(CMAKE_CXX_FLAGS_RELEASE "-Ofast -DNDEBUG -Wno-unused-variable")
endif()
# set this to 0 if per-block checkpoint needs to be disabled
set(PER_BLOCK_CHECKPOINT 1)
if(PER_BLOCK_CHECKPOINT)
add_definitions("-DPER_BLOCK_CHECKPOINT")
endif()
list(INSERT CMAKE_MODULE_PATH 0
"${CMAKE_SOURCE_DIR}/cmake")
if (NOT DEFINED ENV{DEVELOPER_LOCAL_TOOLS})
message(STATUS "Could not find DEVELOPER_LOCAL_TOOLS in env (not required)")
set(BOOST_IGNORE_SYSTEM_PATHS_DEFAULT OFF)
elseif ("$ENV{DEVELOPER_LOCAL_TOOLS}" EQUAL 1)
message(STATUS "Found: env DEVELOPER_LOCAL_TOOLS = 1")
set(BOOST_IGNORE_SYSTEM_PATHS_DEFAULT ON)
else()
message(STATUS "Found: env DEVELOPER_LOCAL_TOOLS = 0")
set(BOOST_IGNORE_SYSTEM_PATHS_DEFAULT OFF)
endif()
message(STATUS "BOOST_IGNORE_SYSTEM_PATHS defaults to ${BOOST_IGNORE_SYSTEM_PATHS_DEFAULT}")
option(BOOST_IGNORE_SYSTEM_PATHS "Ignore boost system paths for local boost installation" ${BOOST_IGNORE_SYSTEM_PATHS_DEFAULT})
if (NOT DEFINED ENV{DEVELOPER_LIBUNBOUND_OLD})
message(STATUS "Could not find DEVELOPER_LIBUNBOUND_OLD in env (not required)")
elseif ("$ENV{DEVELOPER_LIBUNBOUND_OLD}" EQUAL 1)
message(STATUS "Found: env DEVELOPER_LIBUNBOUND_OLD = 1, will use the work around")
add_definitions(-DDEVELOPER_LIBUNBOUND_OLD)
elseif ("$ENV{DEVELOPER_LIBUNBOUND_OLD}" EQUAL 0)
message(STATUS "Found: env DEVELOPER_LIBUNBOUND_OLD = 0")
else()
message(STATUS "Found: env DEVELOPER_LIBUNBOUND_OLD with bad value. Will NOT use the work around")
endif()
set_property(GLOBAL PROPERTY USE_FOLDERS ON)
enable_testing()
option(BUILD_DOCUMENTATION "Build the Doxygen documentation." ON)
# Check whether we're on a 32-bit or 64-bit system
if(CMAKE_SIZEOF_VOID_P EQUAL "8")
set(DEFAULT_BUILD_64 ON)
else()
set(DEFAULT_BUILD_64 OFF)
endif()
option(BUILD_64 "Build for 64-bit? 'OFF' builds for 32-bit." ${DEFAULT_BUILD_64})
if(BUILD_64)
set(ARCH_WIDTH "64")
else()
set(ARCH_WIDTH "32")
endif()
message(STATUS "Building for a ${ARCH_WIDTH}-bit system")
# Check if we're on FreeBSD so we can exclude the local miniupnpc (it should be installed from ports instead)
# CMAKE_SYSTEM_NAME checks are commonly known, but specifically taken from libsdl's CMakeLists
if(CMAKE_SYSTEM_NAME MATCHES "kFreeBSD.*")
set(FREEBSD TRUE)
elseif(CMAKE_SYSTEM_NAME MATCHES "DragonFly.*|FreeBSD")
set(FREEBSD TRUE)
endif()
# Check if we're on OpenBSD. See the README.md for build instructions.
if(CMAKE_SYSTEM_NAME MATCHES "kOpenBSD.*|OpenBSD.*")
set(OPENBSD TRUE)
endif()
# TODO: check bsdi, NetBSD, to see if they need the same FreeBSD changes
#
# elseif(CMAKE_SYSTEM_NAME MATCHES "kNetBSD.*|NetBSD.*")
# set(NETBSD TRUE)
# elseif(CMAKE_SYSTEM_NAME MATCHES ".*BSDI.*")
# set(BSDI TRUE)
include_directories(src contrib/epee/include external "${CMAKE_BINARY_DIR}/version")
if(APPLE)
include_directories(SYSTEM /usr/include/malloc)
endif()
if(MSVC OR MINGW)
set(DEFAULT_STATIC true)
else()
set(DEFAULT_STATIC false)
endif()
option(STATIC "Link libraries statically" ${DEFAULT_STATIC})
if(MINGW)
string(REGEX MATCH "^[^/]:/[^/]*" msys2_install_path "${CMAKE_C_COMPILER}")
message(STATUS "MSYS location: ${msys2_install_path}")
set(CMAKE_INCLUDE_PATH "${msys2_install_path}/mingw${ARCH_WIDTH}/include")
# This is necessary because otherwise CMake will make Boost libraries -lfoo
# rather than a full path. Unfortunately, this makes the shared libraries get
# linked due to a bug in CMake which misses putting -static flags around the
# -lfoo arguments.
set(DEFLIB ${msys2_install_path}/mingw${ARCH_WIDTH}/lib)
list(REMOVE_ITEM CMAKE_C_IMPLICIT_LINK_DIRECTORIES ${DEFLIB})
list(REMOVE_ITEM CMAKE_CXX_IMPLICIT_LINK_DIRECTORIES ${DEFLIB})
endif()
if(STATIC)
if(MSVC)
set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .dll.a .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
else()
set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
endif()
# default database:
# should be lmdb for testing, memory for production still
# set(DATABASE memory)
set(DATABASE lmdb)
if (DEFINED ENV{DATABASE})
set(DATABASE $ENV{DATABASE})
message(STATUS "DATABASE set: ${DATABASE}")
else()
message(STATUS "Could not find DATABASE in env (not required unless you want to change database type from default: ${DATABASE})")
endif()
set(BERKELEY_DB_OVERRIDE 0)
if (DEFINED ENV{BERKELEY_DB})
set(BERKELEY_DB_OVERRIDE 1)
set(BERKELEY_DB $ENV{BERKELEY_DB})
elseif()
set(BERKELEY_DB 0)
endif()
if (DATABASE STREQUAL "lmdb")
message(STATUS "Using LMDB as default DB type")
set(BLOCKCHAIN_DB DB_LMDB)
add_definitions("-DDEFAULT_DB_TYPE=\"lmdb\"")
elseif (DATABASE STREQUAL "berkeleydb")
find_package(BerkeleyDB)
if(NOT BERKELEY_DB)
die("Found BerkeleyDB includes, but could not find BerkeleyDB library. Please make sure you have installed libdb and libdb-dev / libdb++-dev or the equivalent.")
else()
message(STATUS "Found BerkeleyDB include (db.h) in ${BERKELEY_DB_INCLUDE_DIR}")
if(BERKELEY_DB_LIBRARIES)
message(STATUS "Found BerkeleyDB shared library")
set(BDB_STATIC false CACHE BOOL "BDB Static flag")
set(BDB_INCLUDE ${BERKELEY_DB_INCLUDE_DIR} CACHE STRING "BDB include path")
set(BDB_LIBRARY ${BERKELEY_DB_LIBRARIES} CACHE STRING "BDB library name")
set(BDB_LIBRARY_DIRS "" CACHE STRING "BDB Library dirs")
set(BERKELEY_DB 1)
else()
die("Found BerkeleyDB includes, but could not find BerkeleyDB library. Please make sure you have installed libdb and libdb-dev / libdb++-dev or the equivalent.")
endif()
endif()
message(STATUS "Using Berkeley DB as default DB type")
add_definitions("-DDEFAULT_DB_TYPE=\"berkeley\"")
elseif (DATABASE STREQUAL "memory")
set(BLOCKCHAIN_DB DB_MEMORY)
message(STATUS "Using Serialised In Memory as default DB type")
add_definitions("-DDEFAULT_DB_TYPE=\"memory\"")
else()
die("Invalid database type: ${DATABASE}")
endif()
if(BERKELEY_DB)
add_definitions("-DBERKELEY_DB")
endif()
add_definitions("-DBLOCKCHAIN_DB=${BLOCKCHAIN_DB}")
find_package(Libunwind)
if(LIBUNWIND_FOUND)
message(STATUS "Using libunwind to provide stack traces")
add_definitions("-DHAVE_LIBUNWIND")
else()
message(STATUS "Stack traces disabled")
set(LIBUNWIND_LIBRARIES "")
endif()
if (UNIX AND NOT APPLE)
# Note that at the time of this writing the -Wstrict-prototypes flag added below will make this fail
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads)
endif()
add_subdirectory(external)
# Final setup for miniupnpc
if(UPNP_STATIC)
add_definitions("-DUPNP_STATIC")
else()
add_definitions("-DUPNP_DYNAMIC")
include_directories(${UPNP_INCLUDE})
endif()
# Final setup for libunbound
include_directories(${UNBOUND_INCLUDE})
link_directories(${UNBOUND_LIBRARY_DIRS})
# Final setup for rapidjson
include_directories(external/rapidjson)
# Final setup for liblmdb
include_directories(${LMDB_INCLUDE})
# Final setup for Berkeley DB
if (BERKELEY_DB)
include_directories(${BDB_INCLUDE})
endif()
# Final setup for libunwind
include_directories(${LIBUNWIND_INCLUDE})
link_directories(${LIBUNWIND_LIBRARY_DIRS})
if(MSVC)
add_definitions("/bigobj /MP /W3 /GS- /D_CRT_SECURE_NO_WARNINGS /wd4996 /wd4345 /D_WIN32_WINNT=0x0600 /DWIN32_LEAN_AND_MEAN /DGTEST_HAS_TR1_TUPLE=0 /FIinline_c.h /D__SSE4_1__")
# set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /Dinline=__inline")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /STACK:10485760")
if(STATIC)
foreach(VAR CMAKE_C_FLAGS_DEBUG CMAKE_CXX_FLAGS_DEBUG CMAKE_C_FLAGS_RELEASE CMAKE_CXX_FLAGS_RELEASE)
string(REPLACE "/MD" "/MT" ${VAR} "${${VAR}}")
endforeach()
endif()
include_directories(SYSTEM src/platform/msc)
else()
set(ARCH native CACHE STRING "CPU to build for: -march value or default")
# -march=armv7-a conflicts with -mcpu=cortex-a7
if(ARCH STREQUAL "default" OR ARM7 OR ARM6)
set(ARCH_FLAG "")
else()
if(ARCH STREQUAL "x86_64")
set(ARCH_FLAG "-march=x86-64")
else()
set(ARCH_FLAG "-march=${ARCH}")
endif()
endif()
set(WARNINGS "-Wall -Wextra -Wpointer-arith -Wundef -Wvla -Wwrite-strings -Wno-error=extra -Wno-error=deprecated-declarations -Wno-error=sign-compare -Wno-error=strict-aliasing -Wno-error=type-limits -Wno-unused-parameter -Wno-error=unused-variable -Wno-error=undef -Wno-error=uninitialized")
if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
set(WARNINGS "${WARNINGS} -Wno-deprecated-register")
endif()
if(NOT MINGW)
set(WARNINGS "${WARNINGS} -Werror") # to allow pedantic but not stop compilation
endif()
if(CMAKE_C_COMPILER_ID STREQUAL "Clang")
set(WARNINGS "${WARNINGS} -Wno-error=mismatched-tags -Wno-error=null-conversion -Wno-overloaded-shift-op-parentheses -Wno-error=shift-count-overflow -Wno-error=tautological-constant-out-of-range-compare -Wno-error=unused-private-field -Wno-error=unneeded-internal-declaration")
else()
set(WARNINGS "${WARNINGS} -Wlogical-op -Wno-error=maybe-uninitialized")
endif()
if(MINGW)
set(WARNINGS "${WARNINGS} -Wno-error=unused-value -Wno-error=unused-but-set-variable")
set(MINGW_FLAG "${MINGW_FLAG} -DWIN32_LEAN_AND_MEAN")
set(Boost_THREADAPI win32)
include_directories(SYSTEM src/platform/mingw)
# mingw doesn't support LTO (multiple definition errors at link time)
set(USE_LTO_DEFAULT false)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--stack,10485760")
if(NOT BUILD_64)
add_definitions(-DWINVER=0x0501 -D_WIN32_WINNT=0x0501)
endif()
endif()
set(C_WARNINGS "-Waggregate-return -Wnested-externs -Wold-style-definition -Wstrict-prototypes")
set(CXX_WARNINGS "-Wno-reorder -Wno-missing-field-initializers")
try_compile(STATIC_ASSERT_RES "${CMAKE_CURRENT_BINARY_DIR}/static-assert" "${CMAKE_CURRENT_SOURCE_DIR}/cmake/test-static-assert.c" COMPILE_DEFINITIONS "-std=c11")
if(STATIC_ASSERT_RES)
set(STATIC_ASSERT_FLAG "")
else()
set(STATIC_ASSERT_FLAG "-Dstatic_assert=_Static_assert")
endif()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c11 -D_GNU_SOURCE ${MINGW_FLAG} ${STATIC_ASSERT_FLAG} ${WARNINGS} ${C_WARNINGS} ${ARCH_FLAG}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -D_GNU_SOURCE ${MINGW_FLAG} ${WARNINGS} ${CXX_WARNINGS} ${ARCH_FLAG}")
option(NO_AES "Explicitly disable AES support" ${NO_AES})
if(NOT NO_AES AND NOT (ARM6 OR ARM7))
message(STATUS "AES support enabled")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -maes")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -maes")
elseif(ARM7 OR ARM6)
message(STATUS "AES support disabled (not available on ARM)")
else()
message(STATUS "AES support disabled")
endif()
if(ARM6)
message(STATUS "Setting ARM6 C and C++ flags")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=vfp -mfloat-abi=hard")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mfpu=vfp -mfloat-abi=hard")
endif()
if(ARM7)
message(STATUS "Setting ARM7 C and C++ flags")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -mfloat-abi=hard")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -mfloat-abi=hard")
endif()
if(APPLE)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DGTEST_HAS_TR1_TUPLE=0")
endif()
if(CMAKE_C_COMPILER_ID STREQUAL "GNU" AND NOT (CMAKE_C_COMPILER_VERSION VERSION_LESS 4.8))
set(DEBUG_FLAGS "-g3 -Og")
else()
set(DEBUG_FLAGS "-g3 -O0")
endif()
if(NOT DEFINED USE_LTO_DEFAULT)
set(USE_LTO_DEFAULT true)
endif()
set(USE_LTO ${USE_LTO_DEFAULT} CACHE BOOL "Use Link-Time Optimization (Release mode only)")
if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
# There is a clang bug that does not allow to compile code that uses AES-NI intrinsics if -flto is enabled, so explicitly disable
set(USE_LTO false)
# explicitly define stdlib for older versions of clang
if(CMAKE_C_COMPILER_VERSION VERSION_LESS 3.7)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libc++")
endif()
endif()
if(USE_LTO)
set(RELEASE_FLAGS "${RELEASE_FLAGS} -flto")
if(STATIC)
set(RELEASE_FLAGS "${RELEASE_FLAGS} -ffat-lto-objects")
endif()
# Since gcc 4.9 the LTO format is non-standard (slim), so we need the gcc-specific ar and ranlib binaries
if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND NOT (CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.9.0) AND NOT OPENBSD)
set(CMAKE_AR "gcc-ar")
set(CMAKE_RANLIB "gcc-ranlib")
endif()
endif()
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${DEBUG_FLAGS}")
set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${DEBUG_FLAGS}")
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} ${RELEASE_FLAGS}")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} ${RELEASE_FLAGS}")
if(STATIC AND NOT APPLE AND NOT FREEBSD AND NOT OPENBSD)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -static-libgcc -static-libstdc++")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--wrap=__cxa_throw")
endif()
endif()
if (${BOOST_IGNORE_SYSTEM_PATHS} STREQUAL "ON")
set(Boost_NO_SYSTEM_PATHS TRUE)
endif()
set(OLD_LIB_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
if(STATIC)
if(MINGW)
set(CMAKE_FIND_LIBRARY_SUFFIXES .a)
endif()
set(Boost_USE_STATIC_LIBS ON)
set(Boost_USE_STATIC_RUNTIME ON)
endif()
find_package(Boost 1.53 QUIET REQUIRED COMPONENTS system filesystem thread date_time chrono regex serialization program_options)
set(CMAKE_FIND_LIBRARY_SUFFIXES ${OLD_LIB_SUFFIXES})
if(NOT Boost_FOUND)
die("Could not find Boost libraries, please make sure you have installed Boost or libboost-all-dev (1.53 or 1.55+) or the equivalent")
endif()
if((Boost_MAJOR_VERSION EQUAL 1) AND (Boost_MINOR_VERSION EQUAL 54))
die("Boost version 1.54 is unsupported due to a bug (see: http://goo.gl/RrCFmA), please install Boost 1.53 or 1.55 and above")
endif()
include_directories(SYSTEM ${Boost_INCLUDE_DIRS})
if(MINGW)
set(EXTRA_LIBRARIES mswsock;ws2_32;iphlpapi)
elseif(APPLE OR FREEBSD OR OPENBSD)
set(EXTRA_LIBRARIES "")
elseif(NOT MSVC)
find_library(RT rt)
set(EXTRA_LIBRARIES ${RT})
endif()
list(APPEND EXTRA_LIBRARIES ${CMAKE_DL_LIBS})
if(NOT MINGW)
find_library(ATOMIC atomic)
list(APPEND EXTRA_LIBRARIES ${ATOMIC})
endif()
include(version.cmake)
add_subdirectory(contrib)
add_subdirectory(src)
option(BUILD_TESTS "Build tests." OFF)
if(BUILD_TESTS)
add_subdirectory(tests)
endif()
if(BUILD_DOCUMENTATION)
set(DOC_GRAPHS "YES" CACHE STRING "Create dependency graphs (needs graphviz)")
set(DOC_FULLGRAPHS "NO" CACHE STRING "Create call/callee graphs (large)")
find_program(DOT_PATH dot)
if (DOT_PATH STREQUAL "DOT_PATH-NOTFOUND")
message("Doxygen: graphviz not found - graphs disabled")
set(DOC_GRAPHS "NO")
endif()
find_package(Doxygen)
if(DOXYGEN_FOUND)
configure_file("cmake/Doxyfile.in" "Doxyfile" @ONLY)
configure_file("cmake/Doxygen.extra.css.in" "Doxygen.extra.css" @ONLY)
add_custom_target(doc
${DOXYGEN_EXECUTABLE} ${CMAKE_CURRENT_BINARY_DIR}/Doxyfile
WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
COMMENT "Generating API documentation with Doxygen.." VERBATIM)
endif()
endif()