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makefile: Disable optimization on OS X compiling with clang

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The VAX simulator is counting on undefined C language behaviors
which allow the optimizer to correctly produce unexpected results.
Hopefully this will be sufficient until the VAX architecture verifier
(AXE) can be found to validate a rewritten simulator.

As reported in #598
This commit is contained in:
Mark Pizzolato 2018-08-07 23:24:49 -07:00
parent 5a343cefbb
commit 6dad94c5e5
1 changed files with 1 additions and 1 deletions
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makefile
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@ -1042,7 +1042,7 @@ ifneq ($(DEBUG),)
BUILD_FEATURES = - debugging support BUILD_FEATURES = - debugging support
else else
ifneq (clang,$(findstring clang,$(COMPILER_NAME))) ifneq (clang,$(findstring clang,$(COMPILER_NAME)))
CFLAGS_O = -O2 CFLAGS_O = -O0
ifeq (Darwin,$(OSTYPE)) ifeq (Darwin,$(OSTYPE))
NO_LTO = 1 NO_LTO = 1
endif endif