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#
# This file and its contents are supplied under the terms of the
# Common Development and Distribution License ("CDDL"), version 1.0.
# You may only use this file in accordance with the terms of version
# 1.0 of the CDDL.
#
# A full copy of the text of the CDDL should have accompanied this
# source. A copy of the CDDL is also available via the Internet at
# http://www.illumos.org/license/CDDL.
#
#
# Copyright 2011 Nexenta Systems, Inc. All rights reserved.
# Copyright (c) 2019, Joyent, Inc.
#
LIBMDIR = $(SRC)/lib/libm
LIBMSRC = $(LIBMDIR)/common
CPP_CMD = $(CC) -E -Xs
ASSUFFIX_sparc = S
ASSUFFIX_i386 = s
ASSUFFIX = $(ASSUFFIX_$(MACH))
# With studio CSTD of neither enabled nor disabled is "no_lib", whereby we
# expect C99-the-language, but don't modify the behaviour of library routines.
# This is VERY IMPORTANT, as $(CSTD_GNU99), for instance, would link us with
# values-xpg6, which would introduce an __xpg6 to our object with the C99
# flags set, causing us to default C99 libm behaviour on, breaking
# compatibility.
#
# We must then, unfortunately, defeat the GNU compiler _defaulting_ to C99, by
# in that case setting it back to gnu89, which _also_ accepts C99 syntax as
# far as is important.
CSTD =
CFLAGS += -_gcc=-std=gnu89
CFLAGS64 += -_gcc=-std=gnu89
M4FLAGS = -D__STDC__ -DPIC
LDBLDIR_sparc = Q
LDBLDIR_i386 = LD
LDBLDIR = $(LDBLDIR_$(MACH))
CFLAGS += $(C_PICFLAGS) $(XSTRCONST)
CFLAGS64 += $(C_PICFLAGS) $(XSTRCONST)
sparc_CFLAGS += -Wa,-xarch=v8plus
CPPFLAGS += -I$(LIBMSRC)/C \
-I$(LIBMSRC)/$(LDBLDIR) -I$(LIBMDIR)/$(TARGET_ARCH)/src
$(RELEASE_BUILD)CPPFLAGS += -DNDEBUG
# GCC needs __C99FEATURES__ such that the implementations of isunordered,
# isgreaterequal, islessequal, etc, exist. This is basically equivalent to
# providing no -xc99 to Studio, in that it gets us the C99 language features,
# but not values-xpg6, the reason for which is outlined with CSTD.
CFLAGS += -_gcc=-D__C99FEATURES__
CFLAGS64 += -_gcc=-D__C99FEATURES__
# libm depends on integer overflow characteristics
CFLAGS += -_gcc=-fno-strict-overflow
CFLAGS64 += -_gcc=-fno-strict-overflow
# sparse currently has no _Complex support
CFLAGS += -_smatch=off
CFLAGS64 += -_smatch=off
$(DYNLIB) := LDLIBS += -lc
CLEANFILES += pics/*.s pics/*.S
FPDEF_amd64 = -DARCH_amd64
FPDEF_sparc = -DCG89 -DARCH_v8plus -DFPADD_TRAPS_INCOMPLETE_ON_NAN
FPDEF_sparcv9 = -DARCH_v9 -DFPADD_TRAPS_INCOMPLETE_ON_NAN
FPDEF = $(FPDEF_$(TARGET_ARCH))
ASFLAGS = -P -D_ASM $(FPDEF)
XARCH_sparc = v8plus
XARCH_sparcv9 = v9
XARCH_i386 = f80387
XARCH_amd64 = amd64
XARCH = $(XARCH_$(TARGET_ARCH))
ASOPT_sparc = -xarch=$(XARCH) $(AS_PICFLAGS)
ASOPT_sparcv9 = -xarch=$(XARCH) $(AS_PICFLAGS)
ASOPT_i386 =
ASOPT_amd64 = -xarch=$(XARCH) $(AS_PICFLAGS)
ASOPT = $(ASOPT_$(TARGET_ARCH))
ASFLAGS += $(ASOPT)
CPPFLAGS_sparc = -DFPADD_TRAPS_INCOMPLETE_ON_NAN \
-DFDTOS_TRAPS_INCOMPLETE_IN_FNS_MODE
CPPFLAGS += $(CPPFLAGS_$(MACH))
ASFLAGS += $(CPPFLAGS)
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