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Set C and C++ standards the modern Cmake way, and set C++ to C++17.

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Take 2, accepts pre-1.67 versions of boost that have been patched to
remove boost::locale's dependence on auto_ptr.
This commit is contained in:
John Ralls 2019-10-12 16:39:09 -07:00
parent 1d4d244cd6
commit 931cf50f69
1 changed files with 27 additions and 8 deletions
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35
CMakeLists.txt
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@ -512,14 +512,29 @@ set (Boost_FIND_QUIETLY ON)
if (NOT DEFINED ${BOOST_ROOT})
set(BOOST_ROOT $ENV{BOOST_ROOT})
endif()
find_package (Boost 1.54.0 REQUIRED COMPONENTS date_time regex locale filesystem system)
find_package (Boost 1.67.0 COMPONENTS date_time regex locale filesystem system)
if (Boost_FOUND)
include_directories(${Boost_INCLUDE_DIRS})
set(HAVE_BOOST 1)
else (Boost_FOUND)
message (SEND_ERROR "Boost 1.54.0 or later is not installed, and is required. Please install it and ensure that the following libraries are built: chrono, date_time, filesystem, log, program_options, regex, signals, system, and test.")
endif (Boost_FOUND)
else ()
find_package (Boost 1.60.0 REQUIRED COMPONENTS date_time regex locale filesystem system)
if (Boost_FOUND)
include (CheckIncludeFileCXX)
set(CMAKE_REQUIRED_FLAGS "-std=c++17")
set(CMAKE_REQUIRED_INCLUDES ${Boost_INCLUDE_DIR})
check_include_file_cxx("boost/locale.hpp" AUTO_PTR)
unset(CMAKE_REQUIRED_FLAGS)
unset(CMAKE_REQUIRED_INCLUDES)
if(AUTO_PTR)
include_directories(${Boost_INCLUDE_DIRS})
set(HAVE_BOOST 1)
endif()
endif()
endif()
if (NOT HAVE_BOOST)
message (SEND_ERROR "A suitable Boost is not installed, and is required. GnuCash requires that Boost be compatible and compiled with C++17. Boost 1.67 is the first compatible release but some distributions have patched earlier ones to work with C++17. Please install it and ensure that the following libraries are built: date_time, filesystem, locale, and regex.")
endif ()
# Compiler flags
@ -534,18 +549,22 @@ endif()
add_definitions(-D_GNU_SOURCE)
# Also, set the C++ version to c++11
set(CMAKE_CXX_FLAGS "-std=gnu++11 ${CMAKE_CXX_FLAGS}") # FIXME: should be -std=c++11
set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_C_EXTENSIONS ON)
if (UNIX)
set( CMAKE_C_FLAGS "-Werror -Wdeclaration-after-statement -Wno-pointer-sign -Wall -Wmissing-prototypes -Wmissing-declarations -Wno-unused ${CMAKE_C_FLAGS}")
set( CMAKE_C_FLAGS "-Wno-error=deprecated-declarations -std=gnu11 -Wno-error=parentheses ${CMAKE_C_FLAGS}")
set( CMAKE_C_FLAGS "-Wno-error=deprecated-declarations -Wno-error=parentheses ${CMAKE_C_FLAGS}")
set( CMAKE_CXX_FLAGS "-Werror -Wall -Wmissing-declarations -Wno-unused -Wno-error=parentheses ${CMAKE_CXX_FLAGS}")
set( CMAKE_CXX_FLAGS "-Wno-error=deprecated-declarations ${REGISTER_CXXFLAG} ${CMAKE_CXX_FLAGS}")
set( CMAKE_C_FLAGS_RELEASE "-O3 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 ${CMAKE_C_FLAGS}")
endif (UNIX)
if (MINGW)
set( CMAKE_C_FLAGS "-Werror -Wdeclaration-after-statement -Wno-pointer-sign -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wno-unused -Wno-error=deprecated-declarations -std=gnu11 ${CMAKE_C_FLAGS}")
set( CMAKE_C_FLAGS "-Werror -Wdeclaration-after-statement -Wno-pointer-sign -Wall -Wunused -Wmissing-prototypes -Wmissing-declarations -Wno-unused -Wno-error=deprecated-declarations ${CMAKE_C_FLAGS}")
set( CMAKE_CXX_FLAGS "-DWINVER=0x0500 -D_EMULATE_GLIBC=0 ${CMAKE_CXX_FLAGS}") # Workaround for bug in gtest on mingw, see https://github.com/google/googletest/issues/893 and https://github.com/google/googletest/issues/920
endif (MINGW)