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--
-- GENie - Project generator tool
-- https://github.com/bkaradzic/GENie#license
--
premake.ninja.cpp = { }
local ninja = premake.ninja
local cpp = premake.ninja.cpp
local p = premake
-- generate project + config build file
function ninja.generate_cpp(prj)
local pxy = ninja.get_proxy("prj", prj)
local tool = premake.gettool(prj)
-- build a list of supported target platforms that also includes a generic build
local platforms = premake.filterplatforms(prj.solution, tool.platforms, "Native")
for _, platform in ipairs(platforms) do
for cfg in p.eachconfig(pxy, platform) do
p.generate(cfg, cfg:getprojectfilename(), function() cpp.generate_config(prj, cfg) end)
end
end
end
function cpp.generate_config(prj, cfg)
local tool = premake.gettool(prj)
_p('# Ninja build project file autogenerated by GENie')
_p('# https://github.com/bkaradzic/GENie')
_p("")
-- needed for implicit outputs, introduced in 1.7
_p("ninja_required_version = 1.7")
_p("")
local flags = {
defines = ninja.list(tool.getdefines(cfg.defines)),
includes = ninja.list(table.join(tool.getincludedirs(cfg.includedirs), tool.getquoteincludedirs(cfg.userincludedirs))),
cppflags = ninja.list(tool.getcppflags(cfg)),
asmflags = ninja.list(table.join(tool.getcflags(cfg), cfg.buildoptions, cfg.buildoptions_asm)),
cflags = ninja.list(table.join(tool.getcflags(cfg), cfg.buildoptions, cfg.buildoptions_c)),
cxxflags = ninja.list(table.join(tool.getcflags(cfg), tool.getcxxflags(cfg), cfg.buildoptions, cfg.buildoptions_cpp)),
objcflags = ninja.list(table.join(tool.getcflags(cfg), tool.getcxxflags(cfg), cfg.buildoptions, cfg.buildoptions_objc)),
}
_p("")
_p("# core rules for " .. cfg.name)
_p("rule cc")
_p(" command = " .. tool.cc .. " $defines $includes $flags -MMD -MF $out.d -c -o $out $in")
_p(" description = cc $out")
_p(" depfile = $out.d")
_p(" deps = gcc")
_p("")
_p("rule cxx")
_p(" command = " .. tool.cxx .. " $defines $includes $flags -MMD -MF $out.d -c -o $out $in")
_p(" description = cxx $out")
_p(" depfile = $out.d")
_p(" deps = gcc")
_p("")
_p("rule ar")
_p(" command = " .. tool.ar .. " $flags $out $in $libs " .. (os.is("MacOSX") and " 2>&1 > /dev/null | sed -e '/.o) has no symbols$$/d'" or ""))
_p(" description = ar $out")
_p("")
local link = iif(cfg.language == "C", tool.cc, tool.cxx)
_p("rule link")
_p(" command = " .. link .. " -o $out $in $all_ldflags $libs")
_p(" description = link $out")
_p("")
cpp.custombuildtask(prj, cfg)
cpp.dependencyRules(prj, cfg)
cpp.file_rules(cfg, flags)
local objfiles = {}
for _, file in ipairs(cfg.files) do
if path.isSourceFile(file) then
table.insert(objfiles, cpp.objectname(cfg, file))
end
end
_p('')
cpp.linker(prj, cfg, objfiles, tool, flags)
_p("")
end
function cpp.custombuildtask(prj, cfg)
local cmd_index = 1
local seen_commands = {}
local command_by_name = {}
local command_files = {}
for _, custombuildtask in ipairs(prj.custombuildtask or {}) do
for _, buildtask in ipairs(custombuildtask or {}) do
for _, cmd in ipairs(buildtask[4] or {}) do
local num = 1
-- replace dependencies in the command with actual file paths
for _, depdata in ipairs(buildtask[3] or {}) do
cmd = string.gsub(cmd,"%$%(" .. num .."%)", string.format("%s ", path.getrelative(cfg.location, depdata)))
num = num + 1
end
-- replace $(<) and $(@) with $in and $out
cmd = string.gsub(cmd, '%$%(<%)', '$in')
cmd = string.gsub(cmd, '%$%(@%)', '$out')
local cmd_name -- shortened command name
-- generate shortened rule names for the command, may be nonsensical
-- in some cases but it will at least be unique.
if seen_commands[cmd] == nil then
local _, _, name = string.find(cmd, '([.%w]+)%s')
name = 'cmd' .. cmd_index .. '_' .. string.gsub(name, '[^%w]', '_')
seen_commands[cmd] = {
name = name,
index = cmd_index,
}
cmd_index = cmd_index + 1
cmd_name = name
else
cmd_name = seen_commands[cmd].name
end
local index = seen_commands[cmd].index
if command_files[index] == nil then
command_files[index] = {}
end
local cmd_set = command_files[index]
table.insert(cmd_set, {
buildtask[1],
buildtask[2],
buildtask[3],
seen_commands[cmd].name,
})
command_files[index] = cmd_set
command_by_name[cmd_name] = cmd
end
end
end
_p("# custom build rules")
for command, details in pairs(seen_commands) do
_p("rule " .. details.name)
_p(1, "command = " .. command)
end
for cmd_index, cmdsets in ipairs(command_files) do
for _, cmdset in ipairs(cmdsets) do
local file_in = path.getrelative(cfg.location, cmdset[1])
local file_out = path.getrelative(cfg.location, cmdset[2])
local deps = ''
for i, dep in ipairs(cmdset[3]) do
deps = deps .. path.getrelative(cfg.location, dep) .. ' '
end
_p("build " .. file_out .. ': ' .. cmdset[4] .. ' ' .. file_in .. ' | ' .. deps)
_p("")
end
end
end
function cpp.dependencyRules(prj, cfg)
local extra_deps = {}
for _, dependency in ipairs(prj.dependency or {}) do
for _, dep in ipairs(dependency or {}) do
-- This is assuming that the depending object is (going to be) an .o file
local objfilename = cpp.objectname(cfg, path.getrelative(prj.location, dep[1]))
local dependency = path.getrelative(cfg.location, dep[2])
-- ensure a table exists for the dependent object file
if extra_deps[objfilename] == nil then
extra_deps[objfilename] = {}
end
table.insert(extra_deps[objfilename], dependency)
end
end
-- store prepared deps for file_rules() phase
cfg.extra_deps = extra_deps
end
function cpp.objectname(cfg, file)
return path.join(cfg.objectsdir, path.trimdots(path.removeext(file)) .. ".o")
end
function cpp.file_rules(cfg, flags)
_p("# build files")
for _, file in ipairs(cfg.files) do
_p("# FILE: " .. file)
if path.isSourceFile(file) then
local objfilename = cpp.objectname(cfg, file)
local extra_deps = #cfg.extra_deps and '| ' .. table.concat(cfg.extra_deps[objfilename] or {}, ' ') or ''
local cflags = "cflags"
if path.isobjcfile(file) then
_p("build " .. objfilename .. ": cxx " .. file .. extra_deps)
cflags = "objcflags"
elseif path.isasmfile(file) then
_p("build " .. objfilename .. ": cc " .. file .. extra_deps)
cflags = "asmflags"
elseif path.iscfile(file) and not cfg.options.ForceCPP then
_p("build " .. objfilename .. ": cc " .. file .. extra_deps)
else
_p("build " .. objfilename .. ": cxx " .. file .. extra_deps)
cflags = "cxxflags"
end
_p(1, "flags = " .. flags[cflags])
_p(1, "includes = " .. flags.includes)
_p(1, "defines = " .. flags.defines)
elseif path.isresourcefile(file) then
-- TODO
end
end
_p("")
end
function cpp.linker(prj, cfg, objfiles, tool)
local all_ldflags = ninja.list(table.join(tool.getlibdirflags(cfg), tool.getldflags(cfg), cfg.linkoptions))
local lddeps = ninja.list(premake.getlinks(cfg, "siblings", "fullpath"))
local libs = lddeps .. " " .. ninja.list(tool.getlinkflags(cfg))
local function writevars()
_p(1, "all_ldflags = " .. all_ldflags)
_p(1, "libs = " .. libs)
end
if cfg.kind == "StaticLib" then
local ar_flags = ninja.list(tool.getarchiveflags(cfg, cfg, false))
_p("# link static lib")
_p("build " .. cfg:getoutputfilename() .. ": ar " .. table.concat(objfiles, " ") .. " | " .. lddeps)
_p(1, "flags = " .. ninja.list(tool.getarchiveflags(cfg, cfg, false)))
elseif cfg.kind == "SharedLib" then
local output = cfg:getoutputfilename()
_p("# link shared lib")
_p("build " .. output .. ": link " .. table.concat(objfiles, " ") .. " | " .. libs)
writevars()
elseif (cfg.kind == "ConsoleApp") or (cfg.kind == "WindowedApp") then
_p("# link executable")
_p("build " .. cfg:getoutputfilename() .. ": link " .. table.concat(objfiles, " ") .. " | " .. lddeps)
writevars()
else
p.error("ninja action doesn't support this kind of target " .. cfg.kind)
end
end
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