1#
2# This file and its contents are supplied under the terms of the
3# Common Development and Distribution License ("CDDL"), version 1.0.
4# You may only use this file in accordance with the terms of version
5# 1.0 of the CDDL.
6#
7# A full copy of the text of the CDDL should have accompanied this
8# source.  A copy of the CDDL is also available via the Internet at
9# http://www.illumos.org/license/CDDL.
10#
11
12#
13# Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
14#
15
16LIBMDIR		= $(SRC)/lib/libm
17
18LIBMSRC		= $(LIBMDIR)/common
19
20CPP_CMD		= $(CC) -E -Xs
21
22ASSUFFIX_sparc	= S
23ASSUFFIX_i386	= s
24ASSUFFIX	= $(ASSUFFIX_$(MACH))
25
26# With studio CSTD of neither enabled nor disabled is "no_lib", whereby we
27# expect C99-the-language, but don't modify the behaviour of library routines.
28# This is VERY IMPORTANT, as $(CSTD_GNU99), for instance, would link us with
29# values-xpg6, which would introduce an __xpg6 to our object with the C99
30# flags set, causing us to default C99 libm behaviour on, breaking
31# compatibility.
32#
33# We must then, unfortunately, defeat the GNU compiler _defaulting_ to C99, by
34# in that case setting it back to gnu89, which _also_ accepts C99 syntax as
35# far as is important.
36CSTD		=
37CFLAGS		+= -_gcc=-std=gnu89
38CFLAGS64	+= -_gcc=-std=gnu89
39
40M4FLAGS		= -D__STDC__ -DPIC
41
42LDBLDIR_sparc	= Q
43LDBLDIR_i386	= LD
44LDBLDIR		= $(LDBLDIR_$(MACH))
45
46LM_IL		= $(LIBMDIR)/$(TARGET_ARCH)/src/locallibm.il
47
48CFLAGS		+= $(C_PICFLAGS) $(XSTRCONST) $(LM_IL)
49CFLAGS64	+= $(C_PICFLAGS) $(XSTRCONST) $(LM_IL)
50sparc_CFLAGS	+= -Wa,-xarch=v8plus
51
52CPPFLAGS	+= -I$(LIBMSRC)/C \
53		-I$(LIBMSRC)/$(LDBLDIR) -I$(LIBMDIR)/$(TARGET_ARCH)/src
54
55# GCC needs __C99FEATURES__ such that the implementations of isunordered,
56# isgreaterequal, islessequal, etc, exist.  This is basically equivalent to
57# providing no -xc99 to Studio, in that it gets us the C99 language features,
58# but not values-xpg6, the reason for which is outlined with CSTD.
59CFLAGS		+= -_gcc=-D__C99FEATURES__
60CFLAGS64	+= -_gcc=-D__C99FEATURES__
61
62# libm depends on integer overflow characteristics
63CFLAGS		+= -_gcc=-fno-strict-overflow
64CFLAGS64	+= -_gcc=-fno-strict-overflow
65
66$(DYNLIB) 	:= LDLIBS += -lc
67
68$(LINTLIB) 	:= SRCS = $(LIBMSRC)/$(LINTSRC)
69
70CLEANFILES 	+= pics/*.s pics/*.S
71
72FPDEF_amd64	= -DARCH_amd64
73FPDEF_sparc	= -DCG89 -DARCH_v8plus -DFPADD_TRAPS_INCOMPLETE_ON_NAN
74FPDEF_sparcv9	= -DARCH_v9 -DFPADD_TRAPS_INCOMPLETE_ON_NAN
75FPDEF		= $(FPDEF_$(TARGET_ARCH))
76
77ASFLAGS		= -P -D_ASM $(FPDEF)
78
79XARCH_sparc	= v8plus
80XARCH_sparcv9	= v9
81XARCH_i386	= f80387
82XARCH_amd64	= amd64
83XARCH		= $(XARCH_$(TARGET_ARCH))
84
85ASOPT_sparc	= -xarch=$(XARCH) $(AS_PICFLAGS)
86ASOPT_sparcv9	= -xarch=$(XARCH) $(AS_PICFLAGS)
87ASOPT_i386	=
88ASOPT_amd64	= -xarch=$(XARCH) $(AS_PICFLAGS)
89ASOPT		= $(ASOPT_$(TARGET_ARCH))
90
91ASFLAGS		+= $(ASOPT)
92
93CPPFLAGS_sparc = -DFPADD_TRAPS_INCOMPLETE_ON_NAN \
94	-DFDTOS_TRAPS_INCOMPLETE_IN_FNS_MODE
95
96CPPFLAGS	+= $(CPPFLAGS_$(MACH))
97ASFLAGS		+= $(CPPFLAGS)
98