premake/src/actions/make/make_cpp.lua

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--
-- make_cpp.lua
-- Generate a C/C++ project makefile.
-- Copyright (c) 2002-2011 Jason Perkins and the Premake project
--
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premake.make.cpp = { }
local make = premake.make
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local cpp = premake.make.cpp
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local project = premake5.project
local config = premake5.config
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--
-- Generate a GNU make C++ project makefile, with support for the new platforms API.
--
function make.cpp.generate(prj)
cpp.header(prj)
-- main build rule(s)
_p('.PHONY: clean prebuild prelink')
_p('')
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for cfg in project.eachconfig(prj) do
cpp.config(cfg)
end
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-- list intermediate files
cpp.objects(prj)
-- identify the shell type
_p('SHELLTYPE := msdos')
_p('ifeq (,$(ComSpec)$(COMSPEC))')
_p(' SHELLTYPE := posix')
_p('endif')
_p('ifeq (/bin,$(findstring /bin,$(SHELL)))')
_p(' SHELLTYPE := posix')
_p('endif')
_p('')
-- common build target rules
_p('all: $(TARGETDIR) $(OBJDIR) prebuild prelink $(TARGET)')
_p('\t@:')
_p('')
_p('$(TARGET): $(GCH) $(OBJECTS) $(LDDEPS) $(RESOURCES)')
_p('\t@echo Linking %s', prj.name)
_p('\t$(SILENT) $(LINKCMD)')
_p('\t$(POSTBUILDCMDS)')
_p('')
make.mkdirrule("$(TARGETDIR)")
make.mkdirrule("$(OBJDIR)")
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-- clean target
_p('clean:')
_p('\t@echo Cleaning %s', prj.name)
_p('ifeq (posix,$(SHELLTYPE))')
_p('\t$(SILENT) rm -f $(TARGET)')
_p('\t$(SILENT) rm -rf $(OBJDIR)')
_p('else')
_p('\t$(SILENT) if exist $(subst /,\\\\,$(TARGET)) del $(subst /,\\\\,$(TARGET))')
_p('\t$(SILENT) if exist $(subst /,\\\\,$(OBJDIR)) rmdir /s /q $(subst /,\\\\,$(OBJDIR))')
_p('endif')
_p('')
-- custom build step targets
_p('prebuild:')
_p('\t$(PREBUILDCMDS)')
_p('')
_p('prelink:')
_p('\t$(PRELINKCMDS)')
_p('')
-- precompiler header rule
cpp.pchrules(prj)
-- file building rules
cpp.filerules(prj)
-- include the dependencies, built by GCC (with the -MMD flag)
_p('-include $(OBJECTS:%%.o=%%.d)')
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end
--
-- Write out the C++ makefile header.
--
function cpp.header(prj)
-- a little help for the uninitiated
_p('# %s C/C++ project makefile autogenerated by Premake', premake.action.current().shortname)
_p('')
make.defaultconfig(prj)
_p('ifndef verbose')
_p(' SILENT = @')
_p('endif')
_p('')
end
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--
-- Write out the settings for a particular configuration.
--
function cpp.config(cfg)
-- identify the toolset used by this configurations
local toolset = premake.tools[cfg.toolset or "gcc"]
if not toolset then
error("Invalid toolset '" + cfg.toolset + "'")
end
_p('ifeq ($(config),%s)', make.esc(cfg.shortname))
-- write toolset specific configurations
cpp.toolconfig(cfg, toolset)
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-- write target information (target dir, name, obj dir)
cpp.targetconfig(cfg)
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-- write flags
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cpp.flags(cfg, toolset)
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-- set up precompiled headers
cpp.pchconfig(cfg)
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-- write the link step
cpp.linkconfig(cfg, toolset)
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-- write the custom build commands
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_p(' define PREBUILDCMDS')
if #cfg.prebuildcommands > 0 then
_p('\t@echo Running pre-build commands')
_p('\t%s', table.implode(cfg.prebuildcommands, "", "", "\n\t"))
end
_p(' endef')
_p(' define PRELINKCMDS')
if #cfg.prelinkcommands > 0 then
_p('\t@echo Running pre-link commands')
_p('\t%s', table.implode(cfg.prelinkcommands, "", "", "\n\t"))
end
_p(' endef')
_p(' define POSTBUILDCMDS')
if #cfg.postbuildcommands > 0 then
_p('\t@echo Running post-build commands')
_p('\t%s', table.implode(cfg.postbuildcommands, "", "", "\n\t"))
end
_p(' endef')
_p('')
-- write the target building rule
-- cpp.targetrules(cfg)
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-- write out config-level makesettings blocks
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make.settings(cfg, toolset)
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_p('endif')
_p('')
end
--
-- Build command for a single file.
--
function cpp.buildcommand(prj)
local flags = iif(prj.language == "C", '$(CC) $(CFLAGS)', '$(CXX) $(CXXFLAGS)')
_p('\t$(SILENT) %s -o "$@" -MF $(@:%%.o=%%.d) -c "$<"', flags)
end
--
-- Output the list of file building rules.
--
function cpp.filerules(prj)
local tr = project.getsourcetree(prj)
premake.tree.traverse(tr, {
onleaf = function(node, depth)
if path.iscppfile(node.abspath) then
local objectname = project.getfileobject(prj, node.abspath)
_p('$(OBJDIR)/%s.o: %s', make.esc(objectname), make.esc(node.relpath))
_p('\t@echo $(notdir $<)')
cpp.buildcommand(prj)
elseif path.isresourcefile(node.abspath) then
local objectname = project.getfileobject(prj, node.abspath)
_p('$(OBJDIR)/%s.res: %s', make.esc(objectname), make.esc(node.relpath))
_p('\t@echo $(notdir $<)')
_p('\t$(SILENT) $(RESCOMP) $< -O coff -o "$@" $(RESFLAGS)')
end
end
})
_p('')
end
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--
-- Compile flags
--
function cpp.flags(cfg, toolset)
_p(' DEFINES += %s', table.concat(toolset.getdefines(cfg.defines), " "))
_p(' INCLUDES += %s', table.concat(make.esc(toolset.getincludedirs(cfg, cfg.includedirs), " ")))
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_p(' CPPFLAGS += %s $(DEFINES) $(INCLUDES)', table.concat(toolset.getcppflags(cfg), " "))
_p(' CFLAGS += $(CPPFLAGS) $(ARCH) %s', table.concat(table.join(toolset.getcflags(cfg), cfg.buildoptions), " "))
_p(' CXXFLAGS += $(CFLAGS) %s', table.concat(toolset.getcxxflags(cfg), " "))
_p(' LDFLAGS += %s', table.concat(table.join(toolset.getldflags(cfg), cfg.linkoptions), " "))
local resflags = table.join(toolset.getdefines(cfg.resdefines), toolset.getincludedirs(cfg, cfg.resincludedirs), cfg.resoptions)
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_p(' RESFLAGS += $(DEFINES) $(INCLUDES) %s', table.concat(resflags, " "))
end
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--
-- Link step
--
function cpp.linkconfig(cfg, toolset)
local flags = toolset.getlinks(cfg)
_p(' LIBS += %s', table.concat(flags, " "))
local deps = config.getlinks(cfg, "siblings", "fullpath")
_p(' LDDEPS += %s', table.concat(make.esc(deps), " "))
if cfg.kind == premake.STATICLIB then
if cfg.architecture == premake.UNIVERSAL then
_p(' LINKCMD = libtool -o $(TARGET) $(OBJECTS)')
else
_p(' LINKCMD = $(AR) -rcs $(TARGET) $(OBJECTS)')
end
else
-- This started as: $(TARGET) $(LDFLAGS) $(OBJECTS).
-- Had trouble linking to certain static libs, so $(OBJECTS) moved up.
-- $(LDFLAGS) moved: https://sf.net/tracker/?func=detail&aid=3430158&group_id=71616&atid=531880
local cc = iif(cfg.project.language == "C", "CC", "CXX")
_p(' LINKCMD = $(%s) -o $(TARGET) $(OBJECTS) $(RESOURCES) $(ARCH) $(LIBS) $(LDFLAGS)', cc)
end
end
--
-- List the objects file for the project, and each configuration.
--
function cpp.objects(prj)
-- create lists for intermediate files, at the project level and
-- for each configuration
local root = { objects={}, resources={} }
local configs = {}
for cfg in project.eachconfig(prj) do
configs[cfg] = { objects={}, resources={} }
end
-- for each file in the iterator below, keep track of which
-- configurations to which it belongs
local incfg = {}
-- now walk the list of files in the project
local tr = project.getsourcetree(prj)
premake.tree.traverse(tr, {
onleaf = function(node, depth)
-- identify the file type
local kind
if path.iscppfile(node.abspath) then
kind = "objects"
elseif path.isresourcefile(node.abspath) then
kind = "resources"
end
-- skip files that aren't compiled
if not kind then
return
end
-- assign a unique object file name to avoid collisions from
-- files at different folder levels with the same name
local objectname = project.getfileobject(prj, node.abspath)
-- see what set of configurations contains this file
local inallcfgs = true
for cfg in project.eachconfig(prj) do
local filecfg = config.getfileconfig(cfg, node.abspath)
incfg[cfg] = (filecfg ~= nil)
if not filecfg then
inallcfgs = false
end
end
-- if this file exists in all configurations, write it to
-- the project's list of files, else add to specific cfgs
if inallcfgs then
table.insert(root[kind], objectname)
else
for cfg in project.eachconfig(prj) do
if incfg[cfg] then
table.insert(configs[cfg][kind], objectname)
end
end
end
end
})
-- now I can write out the lists, project level first...
function listobjects(var, list, ext)
_p('%s \\', var)
for _, objectname in ipairs(list) do
_p('\t$(OBJDIR)/%s.%s \\', make.esc(objectname), ext)
end
_p('')
end
listobjects('OBJECTS :=', root.objects, 'o')
listobjects('RESOURCES :=', root.resources, 'res')
-- ...then individual configurations, as needed
for cfg in project.eachconfig(prj) do
local files = configs[cfg]
if #files.objects > 0 or #files.resources > 0 then
_p('ifeq ($(config),%s)', make.esc(cfg.shortname))
if #files.objects > 0 then
listobjects(' OBJECTS +=', files.objects, 'o')
end
if #files.resources > 0 then
listobjects(' RESOURCES +=', files.resources, 'res')
end
_p('endif')
_p('')
end
end
end
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--
-- Precompiled header support
--
function cpp.pchconfig(cfg)
if not cfg.flags.NoPCH and cfg.pchheader then
-- Visual Studio needs the PCH path to match the way it appears in
-- the project's #include statement. GCC needs the full path. Assume
-- the #include path is given, is search the include dirs for it.
local pchheader = cfg.pchheader
for _, incdir in ipairs(cfg.includedirs) do
local testname = path.join(incdir, cfg.pchheader)
if os.isfile(testname) then
pchheader = testname
break
end
end
local gch = make.esc(path.getname(pchheader))
_p(' PCH = %s', make.esc(project.getrelative(cfg.project, pchheader)))
_p(' GCH = $(OBJDIR)/%s.gch', gch)
_p(' CPPFLAGS += -I$(OBJDIR) -include $(OBJDIR)/%s', gch)
end
end
function cpp.pchrules(prj)
_p('ifneq (,$(PCH))')
_p('$(GCH): $(PCH)')
_p('\t@echo $(notdir $<)')
_p('ifeq (posix,$(SHELLTYPE))')
_p('\t-$(SILENT) cp $< $(OBJDIR)')
_p('else')
_p('\t$(SILENT) xcopy /D /Y /Q "$(subst /,\\,$<)" "$(subst /,\\,$(OBJDIR))" 1>nul')
_p('endif')
cpp.buildcommand(prj)
_p('endif')
_p('')
end
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--
-- Target (name, dir) configuration.
--
function cpp.targetconfig(cfg)
local targetinfo = config.gettargetinfo(cfg)
_p(' OBJDIR = %s', make.esc(project.getrelative(cfg.project, cfg.objdir)))
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_p(' TARGETDIR = %s', make.esc(targetinfo.directory))
_p(' TARGET = $(TARGETDIR)/%s', make.esc(targetinfo.name))
end
--
-- The main build target rules.
--
function cpp.targetrules(cfg)
local macapp = (cfg.system == premake.MACOSX and cfg.kind == premake.WINDOWEDAPP)
if macapp then
_p('all: $(TARGETDIR) $(OBJDIR) prebuild prelink $(TARGET) $(dir $(TARGETDIR))PkgInfo $(dir $(TARGETDIR))Info.plist')
else
_p('all: $(TARGETDIR) $(OBJDIR) prebuild prelink $(TARGET)')
end
_p('\t@:')
_p('')
if macapp then
_p('$(dir $(TARGETDIR))PkgInfo:')
_p('$(dir $(TARGETDIR))Info.plist:')
_p('')
end
end
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--
-- System specific toolset configuration.
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--
function cpp.toolconfig(cfg, toolset)
local sysflags = toolset.sysflags[cfg.architecture] or toolset.sysflags[cfg.system] or {}
if sysflags.cc then
_p(' CC = %s', sysflags.cc)
end
if sysflags.cxx then
_p(' CXX = %s', sysflags.cxx)
end
if sysflags.ar then
_p(' AR = %s', sysflags.ar)
end
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end
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-----------------------------------------------------------------------------
-- Everything below this point is a candidate for deprecation
-----------------------------------------------------------------------------
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function premake.make_cpp(prj)
-- create a shortcut to the compiler interface
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local cc = premake.gettool(prj)
-- build a list of supported target platforms that also includes a generic build
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local platforms = premake.filterplatforms(prj.solution, cc.platforms, "Native")
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premake.gmake_cpp_header(prj, cc, platforms)
for _, platform in ipairs(platforms) do
for cfg in premake.eachconfig(prj, platform) do
premake.gmake_cpp_config(cfg, cc)
end
end
-- list intermediate files
_p('OBJECTS := \\')
for _, file in ipairs(prj.files) do
if path.iscppfile(file) then
_p('\t$(OBJDIR)/%s.o \\', _MAKE.esc(path.getbasename(file)))
end
end
_p('')
_p('RESOURCES := \\')
for _, file in ipairs(prj.files) do
if path.isresourcefile(file) then
_p('\t$(OBJDIR)/%s.res \\', _MAKE.esc(path.getbasename(file)))
end
end
_p('')
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-- identify the shell type
_p('SHELLTYPE := msdos')
_p('ifeq (,$(ComSpec)$(COMSPEC))')
_p(' SHELLTYPE := posix')
_p('endif')
_p('ifeq (/bin,$(findstring /bin,$(SHELL)))')
_p(' SHELLTYPE := posix')
_p('endif')
_p('')
-- main build rule(s)
_p('.PHONY: clean prebuild prelink')
_p('')
if os.is("MacOSX") and prj.kind == "WindowedApp" then
_p('all: $(TARGETDIR) $(OBJDIR) prebuild prelink $(TARGET) $(dir $(TARGETDIR))PkgInfo $(dir $(TARGETDIR))Info.plist')
else
_p('all: $(TARGETDIR) $(OBJDIR) prebuild prelink $(TARGET)')
end
_p('\t@:')
_p('')
-- target build rule
_p('$(TARGET): $(GCH) $(OBJECTS) $(LDDEPS) $(RESOURCES)')
_p('\t@echo Linking %s', prj.name)
_p('\t$(SILENT) $(LINKCMD)')
_p('\t$(POSTBUILDCMDS)')
_p('')
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-- Create destination directories. Can't use $@ for this because it loses the
-- escaping, causing issues with spaces and parenthesis
_p('$(TARGETDIR):')
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premake.make_mkdirrule("$(TARGETDIR)")
_p('$(OBJDIR):')
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premake.make_mkdirrule("$(OBJDIR)")
-- Mac OS X specific targets
if os.is("MacOSX") and prj.kind == "WindowedApp" then
_p('$(dir $(TARGETDIR))PkgInfo:')
_p('$(dir $(TARGETDIR))Info.plist:')
_p('')
end
-- clean target
_p('clean:')
_p('\t@echo Cleaning %s', prj.name)
_p('ifeq (posix,$(SHELLTYPE))')
_p('\t$(SILENT) rm -f $(TARGET)')
_p('\t$(SILENT) rm -rf $(OBJDIR)')
_p('else')
_p('\t$(SILENT) if exist $(subst /,\\\\,$(TARGET)) del $(subst /,\\\\,$(TARGET))')
_p('\t$(SILENT) if exist $(subst /,\\\\,$(OBJDIR)) rmdir /s /q $(subst /,\\\\,$(OBJDIR))')
_p('endif')
_p('')
-- custom build step targets
_p('prebuild:')
_p('\t$(PREBUILDCMDS)')
_p('')
_p('prelink:')
_p('\t$(PRELINKCMDS)')
_p('')
-- precompiler header rule
cpp.pchrules(prj)
-- per-file rules
for _, file in ipairs(prj.files) do
if path.iscppfile(file) then
_p('$(OBJDIR)/%s.o: %s', _MAKE.esc(path.getbasename(file)), _MAKE.esc(file))
_p('\t@echo $(notdir $<)')
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cpp.buildcommand_old(path.iscfile(file))
elseif (path.getextension(file) == ".rc") then
_p('$(OBJDIR)/%s.res: %s', _MAKE.esc(path.getbasename(file)), _MAKE.esc(file))
_p('\t@echo $(notdir $<)')
_p('\t$(SILENT) $(RESCOMP) $< -O coff -o "$@" $(RESFLAGS)')
end
end
_p('')
-- include the dependencies, built by GCC (with the -MMD flag)
_p('-include $(OBJECTS:%%.o=%%.d)')
end
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--
-- Write the makefile header
--
function premake.gmake_cpp_header(prj, cc, platforms)
_p('# %s project makefile autogenerated by Premake', premake.action.current().shortname)
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-- set up the environment
_p('ifndef config')
_p(' config=%s', _MAKE.esc(premake.getconfigname(prj.solution.configurations[1], platforms[1], true)))
_p('endif')
_p('')
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_p('ifndef verbose')
_p(' SILENT = @')
_p('endif')
_p('')
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_p('ifndef CC')
_p(' CC = %s', cc.cc)
_p('endif')
_p('')
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_p('ifndef CXX')
_p(' CXX = %s', cc.cxx)
_p('endif')
_p('')
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_p('ifndef AR')
_p(' AR = %s', cc.ar)
_p('endif')
_p('')
_p('ifndef RESCOMP')
_p(' ifdef WINDRES')
_p(' RESCOMP = $(WINDRES)')
_p(' else')
_p(' RESCOMP = windres')
_p(' endif')
_p('endif')
_p('')
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end
--
-- Write a block of configuration settings.
--
function premake.gmake_cpp_config(cfg, cc)
_p('ifeq ($(config),%s)', _MAKE.esc(cfg.shortname))
-- if this platform requires a special compiler or linker, list it here
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cpp.platformtools_old(cfg, cc)
_p(' OBJDIR = %s', _MAKE.esc(cfg.objectsdir))
_p(' TARGETDIR = %s', _MAKE.esc(cfg.buildtarget.directory))
_p(' TARGET = $(TARGETDIR)/%s', _MAKE.esc(cfg.buildtarget.name))
_p(' DEFINES += %s', table.concat(cc.getdefines(cfg.defines), " "))
_p(' INCLUDES += %s', table.concat(cc.getincludedirs(cfg.includedirs), " "))
-- CPPFLAGS, CFLAGS, CXXFLAGS, LDFLAGS, and RESFLAGS
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cpp.flags_old(cfg, cc)
-- set up precompiled headers
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cpp.pchconfig_old(cfg)
_p(' LIBS += %s', table.concat(cc.getlinkflags(cfg), " "))
_p(' LDDEPS += %s', table.concat(_MAKE.esc(premake.getlinks(cfg, "siblings", "fullpath")), " "))
if cfg.kind == "StaticLib" then
if cfg.platform:startswith("Universal") then
_p(' LINKCMD = libtool -o $(TARGET) $(OBJECTS)')
else
_p(' LINKCMD = $(AR) -rcs $(TARGET) $(OBJECTS)')
end
else
-- this was $(TARGET) $(LDFLAGS) $(OBJECTS)
-- but had trouble linking to certain static libs so $(OBJECTS) moved up
-- then $(LDFLAGS) moved to end
-- https://sourceforge.net/tracker/?func=detail&aid=3430158&group_id=71616&atid=531880
_p(' LINKCMD = $(%s) -o $(TARGET) $(OBJECTS) $(RESOURCES) $(ARCH) $(LIBS) $(LDFLAGS)', iif(cfg.language == "C", "CC", "CXX"))
end
_p(' define PREBUILDCMDS')
if #cfg.prebuildcommands > 0 then
_p('\t@echo Running pre-build commands')
_p('\t%s', table.implode(cfg.prebuildcommands, "", "", "\n\t"))
end
_p(' endef')
_p(' define PRELINKCMDS')
if #cfg.prelinkcommands > 0 then
_p('\t@echo Running pre-link commands')
_p('\t%s', table.implode(cfg.prelinkcommands, "", "", "\n\t"))
end
_p(' endef')
_p(' define POSTBUILDCMDS')
if #cfg.postbuildcommands > 0 then
_p('\t@echo Running post-build commands')
_p('\t%s', table.implode(cfg.postbuildcommands, "", "", "\n\t"))
end
_p(' endef')
-- write out config-level makesettings blocks
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make.settings_old(cfg, cc)
_p('endif')
_p('')
end
--
-- Platform support
--
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function cpp.platformtools_old(cfg, cc)
local platform = cc.platforms[cfg.platform]
if platform.cc then
_p(' CC = %s', platform.cc)
end
if platform.cxx then
_p(' CXX = %s', platform.cxx)
end
if platform.ar then
_p(' AR = %s', platform.ar)
end
end
--
-- Configurations
--
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function cpp.flags_old(cfg, cc)
_p(' CPPFLAGS += %s $(DEFINES) $(INCLUDES)', table.concat(cc.getcppflags(cfg), " "))
_p(' CFLAGS += $(CPPFLAGS) $(ARCH) %s', table.concat(table.join(cc.getcflags(cfg), cfg.buildoptions), " "))
_p(' CXXFLAGS += $(CFLAGS) %s', table.concat(cc.getcxxflags(cfg), " "))
-- Patch #3401184 changed the order
_p(' LDFLAGS += %s', table.concat(table.join(cc.getlibdirflags(cfg), cc.getldflags(cfg), cfg.linkoptions), " "))
_p(' RESFLAGS += $(DEFINES) $(INCLUDES) %s',
table.concat(table.join(cc.getdefines(cfg.resdefines),
cc.getincludedirs(cfg.resincludedirs), cfg.resoptions), " "))
end
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--
-- Precompiled header support
--
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function cpp.pchconfig_old(cfg)
-- GCC needs the full path to the PCH, while Visual Studio needs
-- only the name (or rather, the name as specified in the #include
-- statement). Try to locate the PCH in the project.
local pchheader = cfg.pchheader
for _, incdir in ipairs(cfg.includedirs) do
local testname = path.join(incdir, cfg.pchheader)
if os.isfile(testname) then
pchheader = testname
break
end
end
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if not cfg.flags.NoPCH and cfg.pchheader then
_p(' PCH = %s', _MAKE.esc(path.getrelative(cfg.location, cfg.pchheader)))
_p(' GCH = $(OBJDIR)/%s.gch', _MAKE.esc(path.getname(cfg.pchheader)))
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_p(' CPPFLAGS += -I$(OBJDIR) -include $(OBJDIR)/%s', _MAKE.esc(path.getname(cfg.pchheader)))
end
end
--
-- Build command for a single file.
--
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function cpp.buildcommand_old(iscfile)
local flags = iif(iscfile, '$(CC) $(CFLAGS)', '$(CXX) $(CXXFLAGS)')
_p('\t$(SILENT) %s -o "$@" -MF $(@:%%.o=%%.d) -c "$<"', flags)
end