mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-14 10:18:02 +00:00
23d333c090
This change includes many bug fixes, for the NT polyfills, strings, memory, boot, and math libraries which were discovered by adding more tools for recreational programming, such as PC emulation. Lemon has also been vendored because it works so well at parsing languages.
182 lines
3.7 KiB
Makefile
182 lines
3.7 KiB
Makefile
#-*-mode:makefile-gmake;indent-tabs-mode:t;tab-width:8;coding:utf-8-*-┐
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#───vi: set et ft=make ts=8 tw=8 fenc=utf-8 :vi───────────────────────┘
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# Default Mode
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#
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# - `make`
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# - Backtraces
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# - Function tracing
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# - Reasonably small
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# - Reasonably optimized
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# - Reasonably debuggable
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ifeq ($(MODE),)
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CONFIG_CCFLAGS += \
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$(BACKTRACES) \
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$(FTRACE) \
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-Og
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TARGET_ARCH ?= \
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-msse3
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RAGELFLAGS ?= -G2
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endif
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# Optimized Mode
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#
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# - `make MODE=opt`
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# - Backtraces
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# - More optimized
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# - Reasonably small
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# - No memory corruption detection
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# - assert() / CHECK_xx() may leak code into binary for debuggability
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# - GCC 8+ hoists check fails into .text.cold, thus minimizing impact
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ifeq ($(MODE), opt)
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CONFIG_CPPFLAGS += \
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-DNDEBUG \
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-msse2avx \
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-Wa,-msse2avx
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CONFIG_CCFLAGS += \
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$(BACKTRACES) \
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-O3
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TARGET_ARCH ?= \
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-march=native
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RAGELFLAGS ?= -G2
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endif
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# Release Mode
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#
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# - `make MODE=rel`
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# - More optimized
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# - Reasonably small
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# - Numeric backtraces
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# - Toilsome debuggability
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# - assert() statements removed
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# - DCHECK_xx() statements removed
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# - No memory corruption detection
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# - CHECK_xx() won't leak strings into binary
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ifeq ($(MODE), rel)
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CONFIG_CPPFLAGS += \
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-DNDEBUG
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CONFIG_CCFLAGS += \
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$(BACKTRACES) \
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-O2
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RAGELFLAGS = -G2
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endif
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# Debug Mode
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#
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# - `make MODE=dbg`
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# - Backtraces
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# - Zero optimization
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# - Enables sanitization
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# - Enables stack canaries
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# - Enormous binaries (b/c ubsan suboptimalities)
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ifeq ($(MODE), dbg)
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CONFIG_CPPFLAGS += \
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-DMODE_DBG
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CONFIG_CCFLAGS += \
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$(BACKTRACES) \
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$(FTRACE) \
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-fno-inline
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CONFIG_COPTS += \
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$(SECURITY_BLANKETS) \
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$(SANITIZER)
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CONFIG_COPTS += \
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-ftrapv
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TARGET_ARCH ?= \
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-march=k8-sse3
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OVERRIDE_CCFLAGS += \
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-fno-pie
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endif
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# Tiny Mode
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#
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# - `make MODE=tiny`
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# - No checks
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# - No asserts
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# - No canaries
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# - No paranoia
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# - No avx hooks
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# - No backtraces
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# - No algorithmics
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# - YOLO
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ifeq ($(MODE), tiny)
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CONFIG_CPPFLAGS += \
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-DTINY \
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-DNDEBUG \
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-DTRUSTWORTHY
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CONFIG_CCFLAGS += \
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-Os \
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-fno-align-functions \
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-fno-align-jumps \
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-fno-align-labels \
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-fno-align-loops
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TARGET_ARCH ?= \
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-march=k8-sse3
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endif
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# ANSI Mode
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#
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# These flags cause GCC to predefine __STRICT_ANSI__. Please be warned
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# that Cosmopolitan headers are written to comply with that request if
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# it's possible to do so. Consider the following example:
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#
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# make -j12 -O o//tool/viz/printvideo.i
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# clang-format-10 -i o//tool/viz/printvideo.i
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# less o//tool/viz/printvideo.i
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#
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# You'll notice functions like memcpy(), ioctl(), etc. get expanded into
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# wild-eyed gnu-style performance hacks. You can turn it off as follows:
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#
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# make -j12 -O MODE=ansi o/ansi/tool/viz/printvideo.i
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# clang-format-10 -i o/ansi/tool/viz/printvideo.i
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# less o/ansi/tool/viz/printvideo.i
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#
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# Here it becomes clear that ANSI mode can help you decouple your source
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# from Cosmopolitan, by turning it into plain ordinary textbook C code.
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#
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# Another potential use case is distributing code to folks using tools
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# such as MSVC or XCode. You can run your binary objects through a tool
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# like objconv to convert them to COFF or MachO. Then use ANSI mode to
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# rollup one header file that'll enable linkage with minimal issues.
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#
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# Lastly note that in some cases, such as gc(), there simply isn't any
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# ANSI workaround available. It's only in cases like that when we'll use
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# the __asm__() header workaround, rather than simply removing it. We do
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# however try to do that much less often than mainstream C libraries.
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ifeq ($(MODE), ansi)
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CONFIG_CFLAGS += -std=c11
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#CONFIG_CPPFLAGS += -ansi
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CONFIG_CXXFLAGS += -std=c++11
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TARGET_ARCH ?= -march=k8-sse3
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endif
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