mirror of
https://github.com/pgbackrest/pgbackrest.git
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33d7681347
Warn if a global variable is defined without a previous declaration. Use this option to detect global variables that do not have a matching extern declaration in a header file.
250 lines
9.9 KiB
Meson
250 lines
9.9 KiB
Meson
####################################################################################################################################
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# pgBackRest Project
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####################################################################################################################################
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project(
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'pgbackrest',
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['c'],
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version: '2.55dev',
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license: 'MIT',
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meson_version: '>=0.47',
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default_options: [
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# Core options
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'buildtype=release',
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'warning_level=2',
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# Base options
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'b_ndebug=if-release',
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# Perform unity builds in a single file
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'unity_size=100000',
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# Compiler options
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'c_std=c99',
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],
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)
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# Selected C compiler
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cc = meson.get_compiler('c')
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####################################################################################################################################
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# OS-specific settings
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####################################################################################################################################
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if host_machine.system() == 'linux'
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add_global_arguments('-D_POSIX_C_SOURCE=200809L', language: 'c')
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elif host_machine.system() == 'darwin'
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add_global_arguments('-D_DARWIN_C_SOURCE', language: 'c')
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endif
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####################################################################################################################################
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# Enable/disable warnings
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####################################################################################################################################
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# Enable as many additional warnings as possible to catch potential errors
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warning_enable = [
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# Warn whenever a pointer is cast so as to remove a type qualifier from the target type
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'-Wcast-qual',
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# Warn for implicit conversions that may alter a value
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'-Wconversion',
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# Warn about duplicated conditions in an if-else-if chain
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'-Wduplicated-cond',
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# Warn when an if-else has identical branches
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'-Wduplicated-branches',
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# Warn if floating-point values are used in equality comparisons
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'--Wfloat-equal',
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# Warn if the format string is not a string literal and cannot be checked
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'-Wformat-nonliteral',
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# Enable -Wformat plus additional format checks
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'-Wformat=2',
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# Warn if the format string requires an unsigned argument and the argument is signed and vice versa
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'-Wformat-signedness',
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# Warn about uninitialized variables which are initialized with themselves
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'-Winit-self',
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# Warn if a global function is defined without a previous prototype declaration
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'-Wmissing-prototypes',
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# Warn if a global variable is defined without a previous declaration
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'-Wmissing-variable-declarations',
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# Warn about anything that depends on the “size of” a function type or of void
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'-Wpointer-arith',
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# Warn if anything is declared more than once in the same scope, even when the extra declaration is valid and changes nothing
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'-Wredundant-decls',
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# Warn if a function is declared or defined without specifying the argument types
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'-Wstrict-prototypes',
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# Warn if a variable-length array is used
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'-Wvla',
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# Give string constants the type const char[length] so that copying the address of one into a non-const char * pointer produces
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# a warning
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'-Wwrite-strings',
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]
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# Disable various unhelpful warnings
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warning_disable = [
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# Warn for variables that might be changed by longjmp or vfork. Disable because of constant false positives/negatives.
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'-Wno-clobbered',
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# Warn if a structure’s initializer has some fields missing. Disable so we can initialize with {0}.
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'-Wno-missing-field-initializers',
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# Warn when a switch case falls through. Disable because this an useful aspect of switches and tests should catch problems.
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'-Wno-implicit-fallthrough',
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]
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add_project_arguments(cc.get_supported_arguments(warning_enable, warning_disable), language: 'c')
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####################################################################################################################################
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# Enable additional optimizations for release builds. We would prefer to use `get_option('optimization') in ['2', '3']` when our
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# minimum version is high enough to allow it.
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####################################################################################################################################
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if get_option('buildtype') == 'release'
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optimization_enable = [
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# Unroll loops whose number of iterations can be determined at compile time or upon entry to the loop
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'-funroll-loops',
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# Perform loop vectorization on trees
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'-ftree-vectorize',
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]
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add_project_arguments(cc.get_supported_arguments(optimization_enable), language: 'c')
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endif
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####################################################################################################################################
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# Stop after the first error when error on warn enabled. Subsequent errors are often caused by the first error.
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####################################################################################################################################
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if get_option('fatal-errors')
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add_project_arguments(cc.get_supported_arguments('-Wfatal-errors'), language: 'c')
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endif
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####################################################################################################################################
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# Generate -fmacro-prefix-map so the relative path to the source directory is not included in the __FILE__ macro. This provides
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# reproducible builds and minimizes the file path in debug messages, just like an in-tree make build. For test source, prefix with
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# test/ in case there are any module name collisions.
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####################################################################################################################################
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python = import('python').find_installation()
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file_prefix = run_command(
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[
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python,
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'-c',
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'import sys, os; print(os.path.relpath(sys.argv[1], sys.argv[2]))',
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meson.current_source_dir(),
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meson.current_build_dir(),
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],
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check: true,
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).stdout().strip()
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add_project_arguments(cc.get_supported_arguments('-fmacro-prefix-map=@0@/src/=' . format(file_prefix)), language: 'c')
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add_project_arguments(cc.get_supported_arguments('-fmacro-prefix-map=@0@/test/src/=test/' . format(file_prefix)), language: 'c')
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####################################################################################################################################
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# Build configuration
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####################################################################################################################################
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configuration = configuration_data()
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# Ensure the C compiler supports __builtin_clzl()
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if not cc.links('''int main(int arg, char **argv) {__builtin_clzl(1);}''')
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error('compiler must support __builtin_clzl()')
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endif
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# Ensure the C compiler supports __builtin_bswap64()
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if not cc.links('''int main(int arg, char **argv) {__builtin_bswap64(1);}''')
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error('compiler must support __builtin_bswap64()')
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endif
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# Find optional backtrace library
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lib_backtrace = cc.find_library('backtrace', required: false)
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if lib_backtrace.found()
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configuration.set('HAVE_LIBBACKTRACE', true, description: 'Is libbacktrace present?')
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endif
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# Find required bz2 library
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lib_bz2 = cc.find_library('bz2')
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# Find required lz4 library
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lib_lz4 = dependency('liblz4')
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# Find required openssl library
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lib_openssl = dependency('openssl', version : '>=1.1.1')
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# Find required pq library
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lib_pq = dependency('libpq')
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# Find required xml library
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lib_xml = dependency('libxml-2.0')
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# Find required yaml library (only used for build)
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lib_yaml = dependency('yaml-0.1')
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# Find required gz library
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lib_z = dependency('zlib')
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configuration.set('ZLIB_CONST', true, description: 'Require zlib const input buffer')
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# Find optional libssh2 library
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lib_ssh2 = dependency('libssh2', required: get_option('libssh2'))
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if lib_ssh2.found()
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configuration.set('HAVE_LIBSSH2', true, description: 'Is libssh2 present?')
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endif
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# Find optional zstd library
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lib_zstd = dependency('libzstd', version: '>=1.0', required: get_option('libzstd'))
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if lib_zstd.found()
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configuration.set('HAVE_LIBZST', true, description: 'Is libzstd present?')
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endif
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# Check if the C compiler supports _Static_assert()
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if cc.compiles('''int main(int arg, char **argv) {({ _Static_assert(1, "foo");});} ''')
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configuration.set('HAVE_STATIC_ASSERT', true, description: 'Does the compiler provide _Static_assert()?')
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endif
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# Enable debug code. We would prefer to use `get_option('debug')` when our minimum version is high enough to allow it.
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if get_option('buildtype') == 'debug' or get_option('buildtype') == 'debugoptimized'
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configuration.set('DEBUG', true, description: 'Enable debug code')
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endif
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# Set configuration path
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configuration.set_quoted('CFGOPTDEF_CONFIG_PATH', get_option('configdir'), description: 'Configuration path')
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# Set FN_NO_RETURN macro
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configuration.set('FN_NO_RETURN', '__attribute__((__noreturn__))', description: 'Indicate that a function does not return')
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# Set FN_INLINE_ALWAYS macro
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configuration.set(
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'FN_INLINE_ALWAYS', '__attribute__((always_inline)) static inline',
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description: 'Indicate that a function should always be inlined'
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)
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# Set FN_PRINTF macro
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configuration.set(
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'FN_PRINTF(fmt, args)', '__attribute__((format(printf, fmt, args)))',
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description: 'Indicate that a function is formatted like printf (and provide format and args position)'
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)
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# Set FN_STRFTIME macro
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configuration.set(
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'FN_STRFTIME(fmt)', '__attribute__((format(strftime, fmt, 0)))',
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description: 'Indicate that a function is formatted like strftime (and provide format position)'
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)
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####################################################################################################################################
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# Include subdirs
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####################################################################################################################################
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subdir('src')
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subdir('doc/src')
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subdir('test/src')
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