mirror of https://github.com/auygun/kaliber.git
299 lines
9.8 KiB
Plaintext
299 lines
9.8 KiB
Plaintext
config("default") {
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if (is_android) {
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defines = [ "OS_ANDROID" ]
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} else if (is_ios) {
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defines = [ "OS_IOS" ]
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} else if (is_linux) {
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defines = [ "OS_LINUX" ]
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} else if (is_mac) {
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defines = [ "OS_MAC" ]
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} else if (is_win) {
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defines = [ "OS_WIN" ]
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}
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if (is_ios || is_mac) {
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defines += [ "OS_APPLE" ]
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}
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cflags_cc = []
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if (is_win) {
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cflags_cc += [ "/std:c++20" ]
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} else {
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cflags_cc += [ "-std=c++20" ]
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}
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cflags = []
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if (is_win) {
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cflags += [
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"/permissive-", # Don't enable nonconforming code to compile.
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"/EHsc", # Use C++ exception handling.
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"/Gd", # __cdecl calling convention.
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"/utf-8", # Set Source and Executable character set.
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]
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defines += [
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# Windows headers from MS and third party expects these to be set.
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"_WINDOWS",
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"_UNICODE",
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"UNICODE",
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# Don't want MS specific extensions for C stdlib functions.
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"_CRT_SECURE_NO_WARNINGS",
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# Clean up the Windows headers.
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"WIN32_LEAN_AND_MEAN",
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"NOMINMAX",
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]
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} else {
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# cflags += [
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# "-fstrict-aliasing", # Optimizations allowed for type aliasing.
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# "-fvisibility=hidden", # Only let symbols be visible inside it's own
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# # library.
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# ]
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# cflags_cc += [
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# "-fvisibility-inlines-hidden", # Inline methods may not generate symbols.
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# # "-stdlib=libc++",
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# ]
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if (is_linux) {
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# cflags += [
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# "-fPIC", # Emit position-independent code suitable for dynamic linking.
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# ]
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libs = [
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"pthread", # Use the POSIX thread library.
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]
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} else if (is_mac) {
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asmflags = [
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"-target",
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"arm64-apple-macos11",
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]
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cflags += [
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# "-fPIC", # Emit position-independent code suitable for dynamic linking.
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"-target",
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"arm64-apple-macos11",
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]
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ldflags = [
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"-target",
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"arm64-apple-macos11",
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]
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}
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}
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# Avoid relative paths everywhere.
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include_dirs = [
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# "//",
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"//src",
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]
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}
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config("debug") {
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defines = [ "_DEBUG" ]
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if (is_win) {
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cflags = [
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"/GS", # Buffer security checks (buffer overruns).
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"/sdl", # Enable additional security features and warnings.
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"/RTC1", # Enable fast run-time checks.
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"/Od", # Disable optimizations.
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"/fp:precise", # Floating points are predictable.
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"/MDd", # Link with multithread debug DLL run-time libraries.
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"/Z7", # Produce obj files that contain full symbolic debugging
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# information.
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]
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ldflags = [ "/DEBUG:FASTLINK" ] # Reference the debug symbols in the obj
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# files instead of a PDB file.
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} else {
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cflags = [
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"-g", # Debug symbols.
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# TODO: This makes it hard to step through code on Linux.
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# "-Og", # Optimizations that works well with debugger.
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]
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if (is_unix) {
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defines += [
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"_GLIBCXX_DEBUG=1", # Enable asserts in stl headers.
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]
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}
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}
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}
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config("release") {
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defines = [ "NDEBUG" ]
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if (is_win) {
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cflags = [
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"/GL", # Link-time code generation / Whole program optimization.
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"/Gy", # Allows converting inline functions to separate functions.
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"/O2", # Optimize for maximum speed.
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"/Oi", # Enable intrinsics.
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"/fp:fast", # Floating points are fast.
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"/MD", # Link with multithread release DLL run-time libraries.
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# "/arch:AVX2", # Minimum CPU architecture.
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]
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ldflags = [
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"/LTCG", # Link time code generation.
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"/OPT:ICF", # COMDAT (common data) folding, e.g. vtables and big inline
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# functions that can't be inlined, but also if identical code
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# happens to be generated though common math operations or
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# similar.
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"/OPT:REF", # Eliminate unreferenced code and data.
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]
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} else {
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cflags = [
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"-Ofast", # Full optimization and disregard strict standard compliance.
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"-fno-math-errno", # Do not check or set errno for invalid input to sqrt
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# and other math functions.
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]
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# cflags += [
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# # Generate machine code for the current developer computer.
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# # TODO: This needs to be set properly before release.
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# "-march=native",
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# ]
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if (is_apple) {
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ldflags = [ "-dead-strip" ]
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} else {
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# Place both data and functions in it's their own sections.
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# Linker optimization that allows for smaller binaries.
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cflags += [
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"-fdata-sections",
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"-ffunction-sections",
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]
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ldflags = [ "-Wl,--gc-sections" ]
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}
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}
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}
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config("warnings") {
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if (is_win) {
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cflags = [
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"/WX", # Treat warnings as errors.
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"/Wall", # Enable all warnings.
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# Disable the following warnings:
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"/wd4061", # enumerator in switch with a default case not explicitly
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# handled by a case label.
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"/wd4100", # unreferenced format parameter.
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"/wd4324", # structure was padded due to alignment specifier
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"/wd4371", # layout of class may have changed from a previous version of
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# the compiler due to better packing of member
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"/wd4514", # unreferenced inline function has been removed.
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"/wd4710", # function not inlined
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"/wd4711", # function selected for automatic inline expansion
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"/wd4820", # padding added after data member.
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"/wd5045", # compiler will insert Spectre mitigation for memory load if
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# switch specified.
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# TODO: Not sure how I feel about these conversion warnings.
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"/wd4244", # conversion, possible loss of data. 'int' to 'float'
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"/wd4267", # conversion, possible loss of data.
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"/wd4305", # truncation from 'double' to 'float'.
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"/wd4365", # conversion, signed/unsigned mismatch.
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"/wd5219", # conversion, possible loss of data. 'int' to 'float'
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# Possible compiler bug? Needs investigation.
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"/wd4668", # '__STDC_WANT_SECURE_LIB__' is not defined as a preprocessor
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# macro, replacing with '0' for '#if/#elif'
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# TODO:
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"/wd4263", # member function does not override any base class virtual
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# member function
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"/wd4264", # no override available for virtual member function, function
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# is hidden
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"/wd4266", # no override available for virtual member function from base,
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# function is hidden
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"/wd4355", # 'this' used in base member initializer list
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"/wd4457", # declaration hides function parameter
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"/wd4464", # relative include path contains '..'.
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"/wd4625", # copy constructor was implicitly defined as deleted
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"/wd4626", # assignment operator was implicitly defined as deleted
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"/wd4706", # assignment withing conditional expression.
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"/wd4774", # format string expected in argument X is not a string literal
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"/wd4828", # The file contains a character that is illegal in the current
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# source character set
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"/wd4946", # reinterpret_cast used between related
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"/wd5026", # move constructor was implicitly defined as deleted
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"/wd5027", # move assignment operator was implicitly defined as deleted
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"/wd5039", # pointer or reference to potentially throwing function passed
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# to 'extern "C"' function under -EHc. Undefined behavior may
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# occur if this function throws an exception.
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# TODO: I don't understand these or how to fix them:
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"/wd4458", # declaration hides class member
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# [ GameObject::rtti ]
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"/wd4582", # constructor is not implicitly called
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# [ intersection.h Contact ]
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"/wd4623", # default constructor was implicitly defined as deleted
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# [ intersection.h Contact ]
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"/wd5243", # using incomplete class can cause potential one definition
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# rule violation due to ABI limitation
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]
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defines = [
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"_CRT_NONSTDC_NO_DEPRECATE",
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"_SILENCE_CXX17_STRSTREAM_DEPRECATION_WARNING",
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]
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} else if (is_mac) {
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cflags = [
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"-Wno-deprecated-declarations",
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"-Wno-inconsistent-missing-override",
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"-Wno-pointer-sign",
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]
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} else {
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cflags = [
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# Enable as much warnings as possible.
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"-Werror", # Make all warnings into errors.
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"-Wall", # Enable (almost) all warnings.
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"-Wextra", # Enable even more warnings.
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# "-Wpedantic", # Issue warnings demanded by strict ISO C/C++ and reject
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# forbidden extensions.
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"-Wvla", # Warn if variable-length array is used in code.
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# Disable the following warnings:
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"-Wno-unused-parameter",
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]
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}
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}
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config("executable") {
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if (is_android) {
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ldflags = [
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"-pie",
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"-rdynamic",
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]
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} else if (is_linux) {
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# ldflags = [
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# "-rdynamic", # Tell linker to expose all symbols, not only used ones.
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# # Needed for some uses of dlopen and for backtraces within
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# # the program.
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# "-Wl,-rpath,\$ORIGIN", # Add directory to runtime library search path.
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# ]
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} else if (is_mac) {
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ldflags = [ "-Wl,-rpath,@loader_path/." ]
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} else if (is_win) {
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ldflags = [
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"/DYNAMICBASE", # Use address space layout randomization.
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"/INCREMENTAL:NO", # Incremental linking interferes with both ninja and
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# release optimizations.
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# Leave the target architecture to environment settings.
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# "/MACHINE:X64",
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]
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}
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}
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# TODO: This needs some more investigation.
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# Is it possible to avoid setting it and rely on defaults?
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# Some tools will be console apps while games will be gui apps.
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# GLFW seems to be using console in debug mode and gui in release mode.
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if (is_win) {
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config("win_gui") {
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ldflags = [ "/SUBSYSTEM:WINDOWS" ]
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}
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config("win_console") {
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ldflags = [ "/SUBSYSTEM:CONSOLE" ]
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}
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}
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