mirror of
https://github.com/pgbackrest/pgbackrest.git
synced 2024-12-12 10:04:14 +02:00
9ec9b9d120
Warn if a global function is defined without a previous prototype declaration. This helps detect when a function that should be static is accidentally declared extern. Most of the changes are to add missing header files so functions can see their declarations. In a some cases functions that should have been static were marked as such. There were only five of these in the core but every little bit counts. Lastly, it was necessary to suppress the warning in the postgres test modules where the function declarations are not available. This is fixable by aligning the module with the auto-generated code in core, but is not a priority.
240 lines
9.5 KiB
Meson
240 lines
9.5 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 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 if a global function is defined without a previous prototype declaration
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'-Wmissing-prototypes',
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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 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 optional lz4 library
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lib_lz4 = dependency('liblz4')
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configuration.set('HAVE_LIBLZ4', true, description: 'Is liblz4 present?')
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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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