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
|
#![no_std]
#![unstable(feature = "panic_unwind", issue = "32837")]
#![feature(link_cfg)]
#![feature(staged_api)]
#![feature(c_unwind)]
#![feature(cfg_target_abi)]
#![cfg_attr(not(target_env = "msvc"), feature(libc))]
cfg_if::cfg_if! {
if #[cfg(target_env = "msvc")] {
// Windows MSVC no extra unwinder support needed
} else if #[cfg(any(
target_os = "l4re",
target_os = "none",
target_os = "espidf",
))] {
// These "unix" family members do not have unwinder.
} else if #[cfg(any(
unix,
windows,
target_os = "psp",
target_os = "solid_asp3",
all(target_vendor = "fortanix", target_env = "sgx"),
))] {
mod libunwind;
pub use libunwind::*;
} else {
// no unwinder on the system!
// - wasm32 (not emscripten, which is "unix" family)
// - os=none ("bare metal" targets)
// - os=hermit
// - os=uefi
// - os=cuda
// - nvptx64-nvidia-cuda
// - Any new targets not listed above.
}
}
#[cfg(target_env = "musl")]
cfg_if::cfg_if! {
if #[cfg(all(feature = "llvm-libunwind", feature = "system-llvm-libunwind"))] {
compile_error!("`llvm-libunwind` and `system-llvm-libunwind` cannot be enabled at the same time");
} else if #[cfg(feature = "llvm-libunwind")] {
#[link(name = "unwind", kind = "static", modifiers = "-bundle")]
extern "C" {}
} else if #[cfg(feature = "system-llvm-libunwind")] {
#[link(name = "unwind", kind = "static", modifiers = "-bundle", cfg(target_feature = "crt-static"))]
#[link(name = "unwind", cfg(not(target_feature = "crt-static")))]
extern "C" {}
} else {
#[link(name = "unwind", kind = "static", modifiers = "-bundle", cfg(target_feature = "crt-static"))]
#[link(name = "gcc_s", cfg(not(target_feature = "crt-static")))]
extern "C" {}
}
}
#[cfg(target_os = "android")]
cfg_if::cfg_if! {
if #[cfg(feature = "llvm-libunwind")] {
compile_error!("`llvm-libunwind` is not supported for Android targets");
} else if #[cfg(feature = "system-llvm-libunwind")] {
#[link(name = "unwind", kind = "static", modifiers = "-bundle", cfg(target_feature = "crt-static"))]
#[link(name = "unwind", cfg(not(target_feature = "crt-static")))]
extern "C" {}
} else {
#[link(name = "gcc", kind = "static", modifiers = "-bundle", cfg(target_feature = "crt-static"))]
#[link(name = "gcc", cfg(not(target_feature = "crt-static")))]
extern "C" {}
}
}
// Android's unwinding library depends on dl_iterate_phdr in `libdl`.
#[cfg(target_os = "android")]
#[link(name = "dl", kind = "static", modifiers = "-bundle", cfg(target_feature = "crt-static"))]
#[link(name = "dl", cfg(not(target_feature = "crt-static")))]
extern "C" {}
// When building with crt-static, we get `gcc_eh` from the `libc` crate, since
// glibc needs it, and needs it listed later on the linker command line. We
// don't want to duplicate it here.
#[cfg(all(
target_os = "linux",
any(target_env = "gnu", target_env = "uclibc"),
not(feature = "llvm-libunwind"),
not(feature = "system-llvm-libunwind")
))]
#[link(name = "gcc_s", cfg(not(target_feature = "crt-static")))]
extern "C" {}
#[cfg(all(
target_os = "linux",
any(target_env = "gnu", target_env = "uclibc"),
not(feature = "llvm-libunwind"),
feature = "system-llvm-libunwind"
))]
#[link(name = "unwind", cfg(not(target_feature = "crt-static")))]
extern "C" {}
#[cfg(target_os = "redox")]
#[link(name = "gcc_eh", kind = "static", modifiers = "-bundle", cfg(target_feature = "crt-static"))]
#[link(name = "gcc_s", cfg(not(target_feature = "crt-static")))]
extern "C" {}
#[cfg(all(target_vendor = "fortanix", target_env = "sgx"))]
#[link(name = "unwind", kind = "static", modifiers = "-bundle")]
extern "C" {}
#[cfg(any(target_os = "freebsd", target_os = "netbsd"))]
#[link(name = "gcc_s")]
extern "C" {}
#[cfg(all(target_os = "openbsd", target_arch = "sparc64"))]
#[link(name = "gcc")]
extern "C" {}
#[cfg(all(target_os = "openbsd", not(target_arch = "sparc64")))]
#[link(name = "c++abi")]
extern "C" {}
#[cfg(any(target_os = "solaris", target_os = "illumos"))]
#[link(name = "gcc_s")]
extern "C" {}
#[cfg(target_os = "dragonfly")]
#[link(name = "gcc_pic")]
extern "C" {}
#[cfg(target_os = "haiku")]
#[link(name = "gcc_s")]
extern "C" {}
#[cfg(target_os = "nto")]
#[link(name = "gcc_s")]
extern "C" {}
|
