1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
# Copyright © Tavian Barnes <tavianator@tavianator.com>
# SPDX-License-Identifier: 0BSD
# Makefile that generates gen/flags.mk
include config/prelude.mk
include ${GEN}/vars.mk
# Configurable flags
CPPFLAGS ?=
CFLAGS ?= \
-g \
-Wall \
-Wformat=2 \
-Werror=implicit \
-Wimplicit-fallthrough \
-Wmissing-declarations \
-Wshadow \
-Wsign-compare \
-Wstrict-prototypes
LDFLAGS ?=
LDLIBS ?=
export XCPPFLAGS=${CPPFLAGS}
export XCFLAGS=${CFLAGS}
export XLDFLAGS=${LDFLAGS}
export XLDLIBS=${LDLIBS}
# Immutable flags
export BFS_CPPFLAGS= \
-Isrc \
-I${GEN} \
-D__EXTENSIONS__ \
-D_ATFILE_SOURCE \
-D_BSD_SOURCE \
-D_DARWIN_C_SOURCE \
-D_DEFAULT_SOURCE \
-D_GNU_SOURCE \
-D_POSIX_PTHREAD_SEMANTICS \
-D_FILE_OFFSET_BITS=64 \
-D_TIME_BITS=64
export BFS_CFLAGS= -std=c17 -pthread
# Platform-specific system libraries
LDLIBS,DragonFly := -lposix1e
LDLIBS,Linux := -lrt
LDLIBS,NetBSD := -lutil
LDLIBS,SunOS := -lsec -lsocket -lnsl
export BFS_LDLIBS=${LDLIBS,${OS}}
# Build profiles
_ASAN := ${TRUTHY,${ASAN}}
_LSAN := ${TRUTHY,${LSAN}}
_MSAN := ${TRUTHY,${MSAN}}
_TSAN := ${TRUTHY,${TSAN}}
_UBSAN := ${TRUTHY,${UBSAN}}
_GCOV := ${TRUTHY,${GCOV}}
_LINT := ${TRUTHY,${LINT}}
_RELEASE := ${TRUTHY,${RELEASE}}
# https://github.com/google/sanitizers/issues/342
TSAN_CPPFLAGS,y := -DBFS_USE_TARGET_CLONES=0
export TSAN_CPPFLAGS=${TSAN_CPPFLAGS,${_TSAN}}
ASAN_CFLAGS,y := -fsanitize=address
LSAN_CFLAGS,y := -fsanitize=leak
MSAN_CFLAGS,y := -fsanitize=memory -fsanitize-memory-track-origins
TSAN_CFLAGS,y := -fsanitize=thread
UBSAN_CFLAGS.y := -fsanitize=undefined
export ASAN_CFLAGS=${ASAN_CFLAGS,${_ASAN}}
export LSAN_CFLAGS=${LSAN_CFLAGS,${_LSAN}}
export MSAN_CFLAGS=${MSAN_CFLAGS,${_MSAN}}
export TSAN_CFLAGS=${TSAN_CFLAGS,${_TSAN}}
export UBSAN_CFLAGS=${UBSAN_CFLAGS,${_UBSAN}}
SAN_CFLAGS,y := -fno-sanitize-recover=all
INSANE := ${NOT,${_ASAN}${_LSAN}${_MSAN}${_TSAN}${_UBSAN}}
SAN := ${NOT,${INSANE}}
export SAN_CFLAGS=${SAN_CFLAGS,${SAN}}
# MSAN and TSAN both need all code to be instrumented
YESLIBS := ${NOT,${_MSAN}${_TSAN}}
NOLIBS ?= ${NOT,${YESLIBS}}
export XNOLIBS=${NOLIBS}
# gcov only intercepts fork()/exec() with -std=gnu*
GCOV_CFLAGS,y := -std=gnu17 --coverage
export GCOV_CFLAGS=${GCOV_CFLAGS,${_GCOV}}
LINT_CPPFLAGS,y := -D_FORTIFY_SOURCE=3 -DBFS_LINT
LINT_CFLAGS,y := -Werror -O2
export LINT_CPPFLAGS=${LINT_CPPFLAGS,${_LINT}}
export LINT_CFLAGS=${LINT_CFLAGS,${_LINT}}
RELEASE_CPPFLAGS,y := -DNDEBUG
RELEASE_CFLAGS,y := -O3 -flto=auto
export RELEASE_CPPFLAGS=${RELEASE_CPPFLAGS,${_RELEASE}}
export RELEASE_CFLAGS=${RELEASE_CFLAGS,${_RELEASE}}
# Set a variable
SETVAR = printf '%s := %s\n' >>$@
# Append to a variable, if non-empty
APPEND = append() { test -z "$$2" || printf '%s += %s\n' "$$1" "$$2" >>$@; }; append
${GEN}/flags.mk::
${MSG} "[ GEN] ${TGT}"
printf '# %s\n' "${TGT}" >$@
${SETVAR} CPPFLAGS "$$BFS_CPPFLAGS"
${APPEND} CPPFLAGS "$$TSAN_CPPFLAGS"
${APPEND} CPPFLAGS "$$LINT_CPPFLAGS"
${APPEND} CPPFLAGS "$$RELEASE_CPPFLAGS"
${APPEND} CPPFLAGS "$$XCPPFLAGS"
${APPEND} CPPFLAGS "$$EXTRA_CPPFLAGS"
${SETVAR} CFLAGS "$$BFS_CFLAGS"
${APPEND} CFLAGS "$$ASAN_CFLAGS"
${APPEND} CFLAGS "$$LSAN_CFLAGS"
${APPEND} CFLAGS "$$MSAN_CFLAGS"
${APPEND} CFLAGS "$$TSAN_CFLAGS"
${APPEND} CFLAGS "$$UBSAN_CFLAGS"
${APPEND} CFLAGS "$$SAN_CFLAGS"
${APPEND} CFLAGS "$$GCOV_CFLAGS"
${APPEND} CFLAGS "$$LINT_CFLAGS"
${APPEND} CFLAGS "$$RELEASE_CFLAGS"
${APPEND} CFLAGS "$$XCFLAGS"
${APPEND} CFLAGS "$$EXTRA_CFLAGS"
${SETVAR} LDFLAGS "$$XLDFLAGS"
${SETVAR} LDLIBS "$$XLDLIBS"
${APPEND} LDLIBS "$$EXTRA_LDLIBS"
${APPEND} LDLIBS "$$BFS_LDLIBS"
${SETVAR} NOLIBS "$$XNOLIBS"
test "${OS}-${SAN}" != FreeBSD-y || printf 'POSTLINK = elfctl -e +noaslr $$@\n' >>$@
${VCAT} $@
|