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stage1: remove get_self_libc_path

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and glibc_detect_native_version
This commit is contained in:
Andrew Kelley
2020-02-25 02:52:49 -05:00
parent 4616af0ca4
commit d4f375c46b
4 changed files with 0 additions and 66 deletions
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37
src/glibc.cpp
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@@ -362,43 +362,6 @@ bool eql_glibc_target(const ZigTarget *a, const ZigTarget *b) {
a->abi == b->abi;
}
#ifdef ZIG_OS_LINUX
#include <unistd.h>
Error glibc_detect_native_version(ZigGLibCVersion *glibc_ver) {
Buf *self_libc_path = get_self_libc_path();
if (self_libc_path == nullptr) {
// TODO There is still more we could do to detect the native glibc version. For example,
// we could look at the ELF file of `/usr/bin/env`, find `libc.so.6`, and then `readlink`
// to find out the glibc version. This is relevant for the static zig builds distributed
// on the download page, since the above detection based on zig's own dynamic linking
// will not work.
return ErrorUnknownABI;
}
Buf *link_name = buf_alloc();
buf_resize(link_name, 4096);
ssize_t amt = readlink(buf_ptr(self_libc_path), buf_ptr(link_name), buf_len(link_name));
if (amt == -1) {
return ErrorUnknownABI;
}
buf_resize(link_name, amt);
if (!buf_starts_with_str(link_name, "libc-") || !buf_ends_with_str(link_name, ".so")) {
return ErrorUnknownABI;
}
// example: "libc-2.3.4.so"
// example: "libc-2.27.so"
buf_resize(link_name, buf_len(link_name) - 3); // chop off ".so"
glibc_ver->major = 2;
glibc_ver->minor = 0;
glibc_ver->patch = 0;
return target_parse_glibc_version(glibc_ver, buf_ptr(link_name) + 5);
}
#else
Error glibc_detect_native_version(ZigGLibCVersion *glibc_ver) {
return ErrorUnknownABI;
}
#endif
size_t glibc_lib_count(void) {
return array_length(glibc_libs);
}