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gcc.lua
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gcc.lua
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---
-- gcc.lua
-- Provides GCC-specific configuration strings.
-- Copyright (c) 2002-2015 Jason Perkins and the Premake project
---
local p = premake
p.tools.gcc = {}
local gcc = p.tools.gcc
local project = p.project
local config = p.config
--
-- Returns list of C preprocessor flags for a configuration.
--
gcc.cppflags = {
system = {
haiku = "-MMD",
wii = { "-MMD", "-MP", "-I$(LIBOGC_INC)", "$(MACHDEP)" },
_ = { "-MMD", "-MP" }
}
}
function gcc.getcppflags(cfg)
local flags = config.mapFlags(cfg, gcc.cppflags)
return flags
end
--
-- Returns string to be appended to -g
--
function gcc.getdebugformat(cfg)
local flags = {
Default = "",
Dwarf = "dwarf",
SplitDwarf = "split-dwarf",
}
return flags
end
--
-- Returns list of C compiler flags for a configuration.
--
gcc.shared = {
architecture = {
x86 = "-m32",
x86_64 = "-m64",
},
flags = {
FatalCompileWarnings = "-Werror",
LinkTimeOptimization = "-flto",
ShadowedVariables = "-Wshadow",
UndefinedIdentifiers = "-Wundef",
},
floatingpoint = {
Fast = "-ffast-math",
Strict = "-ffloat-store",
},
strictaliasing = {
Off = "-fno-strict-aliasing",
Level1 = { "-fstrict-aliasing", "-Wstrict-aliasing=1" },
Level2 = { "-fstrict-aliasing", "-Wstrict-aliasing=2" },
Level3 = { "-fstrict-aliasing", "-Wstrict-aliasing=3" },
},
optimize = {
Off = "-O0",
On = "-O2",
Debug = "-Og",
Full = "-O3",
Size = "-Os",
Speed = "-O3",
},
pic = {
On = "-fPIC",
},
vectorextensions = {
AVX = "-mavx",
AVX2 = "-mavx2",
SSE = "-msse",
SSE2 = "-msse2",
SSE3 = "-msse3",
SSSE3 = "-mssse3",
["SSE4.1"] = "-msse4.1",
},
isaextensions = {
MOVBE = "-mmovbe",
POPCNT = "-mpopcnt",
PCLMUL = "-mpclmul",
LZCNT = "-mlzcnt",
BMI = "-mbmi",
BMI2 = "-mbmi2",
F16C = "-mf16c",
AES = "-maes",
FMA = "-mfma",
FMA4 = "-mfma4",
RDRND = "-mrdrnd",
},
warnings = {
Extra = {"-Wall", "-Wextra"},
High = "-Wall",
Off = "-w",
},
symbols = function(cfg, mappings)
local values = gcc.getdebugformat(cfg)
local debugformat = values[cfg.debugformat] or ""
return {
On = "-g" .. debugformat,
FastLink = "-g" .. debugformat,
Full = "-g" .. debugformat,
}
end,
unsignedchar = {
On = "-funsigned-char",
Off = "-fno-unsigned-char"
},
omitframepointer = {
On = "-fomit-frame-pointer",
Off = "-fno-omit-frame-pointer"
}
}
gcc.cflags = {
cdialect = {
["C89"] = "-std=c89",
["C90"] = "-std=c90",
["C99"] = "-std=c99",
["C11"] = "-std=c11",
["gnu89"] = "-std=gnu89",
["gnu90"] = "-std=gnu90",
["gnu99"] = "-std=gnu99",
["gnu11"] = "-std=gnu11",
}
}
function gcc.getcflags(cfg)
local shared_flags = config.mapFlags(cfg, gcc.shared)
local cflags = config.mapFlags(cfg, gcc.cflags)
local flags = table.join(shared_flags, cflags)
flags = table.join(flags, gcc.getwarnings(cfg))
return flags
end
function gcc.getwarnings(cfg)
local result = {}
for _, enable in ipairs(cfg.enablewarnings) do
table.insert(result, '-W' .. enable)
end
for _, disable in ipairs(cfg.disablewarnings) do
table.insert(result, '-Wno-' .. disable)
end
for _, fatal in ipairs(cfg.fatalwarnings) do
table.insert(result, '-Werror=' .. fatal)
end
return result
end
--
-- Returns list of C++ compiler flags for a configuration.
--
gcc.cxxflags = {
exceptionhandling = {
Off = "-fno-exceptions"
},
flags = {
NoBufferSecurityCheck = "-fno-stack-protector",
},
cppdialect = {
["C++98"] = "-std=c++98",
["C++0x"] = "-std=c++0x",
["C++11"] = "-std=c++11",
["C++1y"] = "-std=c++1y",
["C++14"] = "-std=c++14",
["C++1z"] = "-std=c++1z",
["C++17"] = "-std=c++17",
["gnu++98"] = "-std=gnu++98",
["gnu++0x"] = "-std=gnu++0x",
["gnu++11"] = "-std=gnu++11",
["gnu++1y"] = "-std=gnu++1y",
["gnu++14"] = "-std=gnu++14",
["gnu++1z"] = "-std=gnu++1z",
["gnu++17"] = "-std=gnu++17",
},
rtti = {
Off = "-fno-rtti"
},
visibility = {
Default = "-fvisibility=default",
Hidden = "-fvisibility=hidden",
Internal = "-fvisibility=internal",
Protected = "-fvisibility=protected",
},
inlinesvisibility = {
Hidden = "-fvisibility-inlines-hidden"
}
}
function gcc.getcxxflags(cfg)
local shared_flags = config.mapFlags(cfg, gcc.shared)
local cxxflags = config.mapFlags(cfg, gcc.cxxflags)
local flags = table.join(shared_flags, cxxflags)
flags = table.join(flags, gcc.getwarnings(cfg))
return flags
end
--
-- Decorate defines for the GCC command line.
--
function gcc.getdefines(defines)
local result = {}
for _, define in ipairs(defines) do
table.insert(result, '-D' .. p.esc(define))
end
return result
end
function gcc.getundefines(undefines)
local result = {}
for _, undefine in ipairs(undefines) do
table.insert(result, '-U' .. p.esc(undefine))
end
return result
end
--
-- Returns a list of forced include files, decorated for the compiler
-- command line.
--
-- @param cfg
-- The project configuration.
-- @return
-- An array of force include files with the appropriate flags.
--
function gcc.getforceincludes(cfg)
local result = {}
table.foreachi(cfg.forceincludes, function(value)
local fn = project.getrelative(cfg.project, value)
table.insert(result, string.format('-include %s', p.quoted(fn)))
end)
return result
end
--
-- Decorate include file search paths for the GCC command line.
--
function gcc.getincludedirs(cfg, dirs, sysdirs)
local result = {}
for _, dir in ipairs(dirs) do
dir = project.getrelative(cfg.project, dir)
table.insert(result, '-I' .. p.quoted(dir))
end
for _, dir in ipairs(sysdirs or {}) do
dir = project.getrelative(cfg.project, dir)
table.insert(result, '-isystem ' .. p.quoted(dir))
end
return result
end
--
-- Return a list of decorated rpaths
--
function gcc.getrunpathdirs(cfg, dirs)
local result = {}
if not (table.contains(os.getSystemTags(cfg.system), "darwin")
or (cfg.system == p.LINUX)) then
return result
end
local rpaths = {}
-- User defined runpath search paths
for _, fullpath in ipairs(cfg.runpathdirs) do
local rpath = path.getrelative(cfg.buildtarget.directory, fullpath)
if not (table.contains(rpaths, rpath)) then
table.insert(rpaths, rpath)
end
end
-- Automatically add linked shared libraries path relative to target directory
for _, sibling in ipairs(config.getlinks(cfg, "siblings", "object")) do
if (sibling.kind == p.SHAREDLIB) then
local fullpath = sibling.linktarget.directory
local rpath = path.getrelative(cfg.buildtarget.directory, fullpath)
if not (table.contains(rpaths, rpath)) then
table.insert(rpaths, rpath)
end
end
end
for _, rpath in ipairs(rpaths) do
if table.contains(os.getSystemTags(cfg.system), "darwin") then
rpath = "@loader_path/" .. rpath
elseif (cfg.system == p.LINUX) then
rpath = iif(rpath == ".", "", "/" .. rpath)
rpath = "$$ORIGIN" .. rpath
end
table.insert(result, "-Wl,-rpath,'" .. rpath .. "'")
end
return result
end
--
-- get the right output flag.
--
function gcc.getsharedlibarg(cfg)
if table.contains(os.getSystemTags(cfg.system), "darwin") then
if cfg.sharedlibtype == "OSXBundle" then
return "-bundle"
elseif cfg.sharedlibtype == "XCTest" then
return "-bundle"
elseif cfg.sharedlibtype == "OSXFramework" then
return "-framework"
else
return "-dynamiclib"
end
else
return "-shared"
end
end
--
-- Return a list of LDFLAGS for a specific configuration.
--
function gcc.ldsymbols(cfg)
-- OS X has a bug, see http://lists.apple.com/archives/Darwin-dev/2006/Sep/msg00084.html
return iif(table.contains(os.getSystemTags(cfg.system), "darwin"), "-Wl,-x", "-s")
end
gcc.ldflags = {
architecture = {
x86 = "-m32",
x86_64 = "-m64",
},
flags = {
LinkTimeOptimization = "-flto",
},
kind = {
SharedLib = function(cfg)
local r = { gcc.getsharedlibarg(cfg) }
if cfg.system == p.WINDOWS and not cfg.flags.NoImportLib then
table.insert(r, '-Wl,--out-implib="' .. cfg.linktarget.relpath .. '"')
elseif cfg.system == p.LINUX then
table.insert(r, '-Wl,-soname=' .. p.quoted(cfg.linktarget.name))
elseif table.contains(os.getSystemTags(cfg.system), "darwin") then
table.insert(r, '-Wl,-install_name,' .. p.quoted('@rpath/' .. cfg.linktarget.name))
end
return r
end,
WindowedApp = function(cfg)
if cfg.system == p.WINDOWS then return "-mwindows" end
end,
},
system = {
wii = "$(MACHDEP)",
},
symbols = {
Off = gcc.ldsymbols,
Default = gcc.ldsymbols,
}
}
function gcc.getldflags(cfg)
local flags = config.mapFlags(cfg, gcc.ldflags)
return flags
end
--
-- Return a list of decorated additional libraries directories.
--
gcc.libraryDirectories = {
architecture = {
x86 = function (cfg)
local r = {}
if not table.contains(os.getSystemTags(cfg.system), "darwin") then
table.insert (r, "-L/usr/lib32")
end
return r
end,
x86_64 = function (cfg)
local r = {}
if not table.contains(os.getSystemTags(cfg.system), "darwin") then
table.insert (r, "-L/usr/lib64")
end
return r
end,
},
system = {
wii = "-L$(LIBOGC_LIB)",
}
}
function gcc.getLibraryDirectories(cfg)
local flags = {}
-- Scan the list of linked libraries. If any are referenced with
-- paths, add those to the list of library search paths. The call
-- config.getlinks() all includes cfg.libdirs.
for _, dir in ipairs(config.getlinks(cfg, "system", "directory")) do
table.insert(flags, '-L' .. p.quoted(dir))
end
if cfg.flags.RelativeLinks then
for _, dir in ipairs(config.getlinks(cfg, "siblings", "directory")) do
local libFlag = "-L" .. p.project.getrelative(cfg.project, dir)
if not table.contains(flags, libFlag) then
table.insert(flags, libFlag)
end
end
end
for _, dir in ipairs(cfg.syslibdirs) do
table.insert(flags, '-L' .. p.quoted(dir))
end
local gccFlags = config.mapFlags(cfg, gcc.libraryDirectories)
flags = table.join(flags, gccFlags)
return flags
end
--
-- Return the list of libraries to link, decorated with flags as needed.
--
function gcc.getlinks(cfg, systemonly, nogroups)
local result = {}
if not systemonly then
if cfg.flags.RelativeLinks then
local libFiles = config.getlinks(cfg, "siblings", "basename")
for _, link in ipairs(libFiles) do
if string.startswith(link, "lib") then
link = link:sub(4)
end
table.insert(result, "-l" .. link)
end
else
-- Don't use the -l form for sibling libraries, since they may have
-- custom prefixes or extensions that will confuse the linker. Instead
-- just list out the full relative path to the library.
result = config.getlinks(cfg, "siblings", "fullpath")
end
end
if not nogroups and #result > 1 and (cfg.linkgroups == p.ON) then
table.insert(result, 1, "-Wl,--start-group")
table.insert(result, "-Wl,--end-group")
end
-- The "-l" flag is fine for system libraries
local links = config.getlinks(cfg, "system", "fullpath")
local static_syslibs = {"-Wl,-Bstatic"}
local shared_syslibs = {}
for _, link in ipairs(links) do
if path.isframework(link) then
table.insert(result, "-framework")
table.insert(result, path.getbasename(link))
elseif path.isobjectfile(link) then
table.insert(result, link)
else
local endswith = function(s, ptrn)
return ptrn == string.sub(s, -string.len(ptrn))
end
local name = path.getname(link)
-- Check whether link mode decorator is present
if endswith(name, ":static") then
name = string.sub(name, 0, -8)
table.insert(static_syslibs, "-l" .. name)
elseif endswith(name, ":shared") then
name = string.sub(name, 0, -8)
table.insert(shared_syslibs, "-l" .. name)
else
table.insert(shared_syslibs, "-l" .. name)
end
end
end
local move = function(a1, a2)
local t = #a2
for i = 1, #a1 do a2[t + i] = a1[i] end
end
if #static_syslibs > 1 then
table.insert(static_syslibs, "-Wl,-Bdynamic")
move(static_syslibs, result)
end
move(shared_syslibs, result)
return result
end
--
-- Returns makefile-specific configuration rules.
--
gcc.makesettings = {
system = {
wii = [[
ifeq ($(strip $(DEVKITPPC)),)
$(error "DEVKITPPC environment variable is not set")'
endif
include $(DEVKITPPC)/wii_rules']]
}
}
function gcc.getmakesettings(cfg)
local settings = config.mapFlags(cfg, gcc.makesettings)
return table.concat(settings)
end
--
-- Retrieves the executable command name for a tool, based on the
-- provided configuration and the operating environment.
--
-- @param cfg
-- The configuration to query.
-- @param tool
-- The tool to fetch, one of "cc" for the C compiler, "cxx" for
-- the C++ compiler, or "ar" for the static linker.
-- @return
-- The executable command name for a tool, or nil if the system's
-- default value should be used.
--
gcc.tools = {
cc = "gcc",
cxx = "g++",
ar = "ar",
rc = "windres"
}
function gcc.gettoolname(cfg, tool)
if (cfg.gccprefix and gcc.tools[tool]) or tool == "rc" then
return (cfg.gccprefix or "") .. gcc.tools[tool]
end
return nil
end