Merge pull request #71087 from matthewbauer/libbsd-0_10_0

Revert "Revert "libbsd: 0.9.1 -> 0.10.0 (#66948)""
This commit is contained in:
Matthew Bauer 2019-10-14 19:17:14 -04:00 committed by GitHub
commit 1016bfcff1
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 191 additions and 114 deletions

View file

@ -1,30 +1,26 @@
diff --git a/configure.ac b/configure.ac
index 55fcfe6..1e26c93 100644
index 6e9496d..60b6e4c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,15 +51,19 @@ AS_CASE([$host_os],
AC_SEARCH_LIBS([clock_gettime], [rt], [CLOCK_GETTIME_LIBS="-lrt"])
AC_SUBST([CLOCK_GETTIME_LIBS])
LIBS="$saved_LIBS"
+ AM_CONDITIONAL([BUILD_LINK_VERSION_SCRIPT], [1])
],
[*-musl*], [
# Upstream refuses to define this, we will do it ourselves then.
AC_DEFINE([__MUSL__], [1], [Define to 1 if we are building for musl])
+ AM_CONDITIONAL([BUILD_LINK_VERSION_SCRIPT], [1])
],
-)
+ [
+ AM_CONDITIONAL([BUILD_LINK_VERSION_SCRIPT], [1])
+ ])
@@ -44,6 +44,8 @@ AC_SUBST([TESTU01_LIBS])
AM_CONDITIONAL([HAVE_LIBTESTU01],
[test "x$ac_cv_lib_testu01_unif01_CreateExternGenBits" = "xyes"])
+AX_CHECK_VSCRIPT
+
is_windows=no
AS_CASE([$host_os],
[*-gnu*], [
@@ -68,7 +70,7 @@ AS_CASE([$host_os],
AM_CONDITIONAL([OS_WINDOWS], [test "x$is_windows" = "xyes"])
# Checks for header files.
-AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h])
+AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h nlist.h])
-AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h grp.h])
+AC_CHECK_HEADERS([sys/ndir.h sys/dir.h ndir.h dirent.h grp.h nlist.h])
# Checks for typedefs, structures, and compiler characteristics.
AC_C_INLINE
@@ -143,7 +147,8 @@ AC_LINK_IFELSE(
@@ -169,7 +171,8 @@ AC_LINK_IFELSE(
AC_CHECK_FUNCS([clearenv dirfd fopencookie __fpurge \
getauxval getentropy getexecname getline \
@ -60,19 +56,168 @@ index f987fee..a1e17ed 100644
#if !defined(__GLIBC__) || \
(defined(__GLIBC__) && (!__GLIBC_PREREQ(2, 25) || !defined(_GNU_SOURCE)))
diff --git a/m4/ax_check_vscript.m4 b/m4/ax_check_vscript.m4
new file mode 100644
index 0000000..9851f32
--- /dev/null
+++ b/m4/ax_check_vscript.m4
@@ -0,0 +1,142 @@
+# ===========================================================================
+# https://www.gnu.org/software/autoconf-archive/ax_check_vscript.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_CHECK_VSCRIPT
+#
+# DESCRIPTION
+#
+# Check whether the linker supports version scripts. Version scripts are
+# used when building shared libraries to bind symbols to version nodes
+# (helping to detect incompatibilities) or to limit the visibility of
+# non-public symbols.
+#
+# Output:
+#
+# If version scripts are supported, VSCRIPT_LDFLAGS will contain the
+# appropriate flag to pass to the linker. On GNU systems this would
+# typically be "-Wl,--version-script", and on Solaris it would typically
+# be "-Wl,-M".
+#
+# Two Automake conditionals are also set:
+#
+# HAVE_VSCRIPT is true if the linker supports version scripts with
+# entries that use simple wildcards, like "local: *".
+#
+# HAVE_VSCRIPT_COMPLEX is true if the linker supports version scripts with
+# pattern matching wildcards, like "global: Java_*".
+#
+# On systems that do not support symbol versioning, such as Mac OS X, both
+# conditionals will be false. They will also be false if the user passes
+# "--disable-symvers" on the configure command line.
+#
+# Example:
+#
+# configure.ac:
+#
+# AX_CHECK_VSCRIPT
+#
+# Makefile.am:
+#
+# if HAVE_VSCRIPT
+# libfoo_la_LDFLAGS += $(VSCRIPT_LDFLAGS),@srcdir@/libfoo.map
+# endif
+#
+# if HAVE_VSCRIPT_COMPLEX
+# libbar_la_LDFLAGS += $(VSCRIPT_LDFLAGS),@srcdir@/libbar.map
+# endif
+#
+# LICENSE
+#
+# Copyright (c) 2014 Kevin Cernekee <cernekee@gmail.com>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 2
+
+# _AX_CHECK_VSCRIPT(flag, global-sym, action-if-link-succeeds, [junk-file=no])
+AC_DEFUN([_AX_CHECK_VSCRIPT], [
+ AC_LANG_PUSH([C])
+ ax_check_vscript_save_flags="$LDFLAGS"
+ echo "V1 { global: $2; local: *; };" > conftest.map
+ AS_IF([test x$4 = xyes], [
+ echo "{" >> conftest.map
+ ])
+ LDFLAGS="$LDFLAGS -Wl,$1,conftest.map"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[int show, hide;]], [])], [$3])
+ LDFLAGS="$ax_check_vscript_save_flags"
+ rm -f conftest.map
+ AC_LANG_POP([C])
+]) dnl _AX_CHECK_VSCRIPT
+
+AC_DEFUN([AX_CHECK_VSCRIPT], [
+
+ AC_ARG_ENABLE([symvers],
+ AS_HELP_STRING([--disable-symvers],
+ [disable library symbol versioning [default=auto]]),
+ [want_symvers=$enableval],
+ [want_symvers=yes]
+ )
+
+ AS_IF([test x$want_symvers = xyes], [
+
+ dnl First test --version-script and -M with a simple wildcard.
+
+ AC_CACHE_CHECK([linker version script flag], ax_cv_check_vscript_flag, [
+ ax_cv_check_vscript_flag=unsupported
+ _AX_CHECK_VSCRIPT([--version-script], [show], [
+ ax_cv_check_vscript_flag=--version-script
+ ])
+ AS_IF([test x$ax_cv_check_vscript_flag = xunsupported], [
+ _AX_CHECK_VSCRIPT([-M], [show], [ax_cv_check_vscript_flag=-M])
+ ])
+
+ dnl The linker may interpret -M (no argument) as "produce a load map."
+ dnl If "-M conftest.map" doesn't fail when conftest.map contains
+ dnl obvious syntax errors, assume this is the case.
+
+ AS_IF([test x$ax_cv_check_vscript_flag != xunsupported], [
+ _AX_CHECK_VSCRIPT([$ax_cv_check_vscript_flag], [show],
+ [ax_cv_check_vscript_flag=unsupported], [yes])
+ ])
+ ])
+
+ dnl If the simple wildcard worked, retest with a complex wildcard.
+
+ AS_IF([test x$ax_cv_check_vscript_flag != xunsupported], [
+ ax_check_vscript_flag=$ax_cv_check_vscript_flag
+ AC_CACHE_CHECK([if version scripts can use complex wildcards],
+ ax_cv_check_vscript_complex_wildcards, [
+ ax_cv_check_vscript_complex_wildcards=no
+ _AX_CHECK_VSCRIPT([$ax_cv_check_vscript_flag], [sh*], [
+ ax_cv_check_vscript_complex_wildcards=yes])
+ ])
+ ax_check_vscript_complex_wildcards="$ax_cv_check_vscript_complex_wildcards"
+ ], [
+ ax_check_vscript_flag=
+ ax_check_vscript_complex_wildcards=no
+ ])
+ ], [
+ AC_MSG_CHECKING([linker version script flag])
+ AC_MSG_RESULT([disabled])
+
+ ax_check_vscript_flag=
+ ax_check_vscript_complex_wildcards=no
+ ])
+
+ AS_IF([test x$ax_check_vscript_flag != x], [
+ VSCRIPT_LDFLAGS="-Wl,$ax_check_vscript_flag"
+ AC_SUBST([VSCRIPT_LDFLAGS])
+ ])
+
+ AM_CONDITIONAL([HAVE_VSCRIPT],
+ [test x$ax_check_vscript_flag != x])
+ AM_CONDITIONAL([HAVE_VSCRIPT_COMPLEX],
+ [test x$ax_check_vscript_complex_wildcards = xyes])
+
+]) dnl AX_CHECK_VSCRIPT
diff --git a/src/Makefile.am b/src/Makefile.am
index f3cc0fa..3aaecd4 100644
index 8384b92..e2c8e15 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -56,8 +56,10 @@ libbsd_la_DEPENDENCIES = \
libbsd_la_LIBADD = \
$(CLOCK_GETTIME_LIBS)
@@ -65,8 +65,11 @@ libbsd_la_LIBADD = \
$(ARC4RANDOM_ATFORK_LIBS) \
$(nil)
libbsd_la_LDFLAGS = \
- -Wl,--version-script=$(srcdir)/libbsd.map \
-version-number $(LIBBSD_ABI)
+if BUILD_LINK_VERSION_SCRIPT
+libbsd_la_LDFLAGS += -Wl,--version-script=$(srcdir)/libbsd.map
+if HAVE_VSCRIPT
+libbsd_la_LDFLAGS += $(VSCRIPT_LDFLAGS),@srcdir@/libbsd.map
+endif
+
libbsd_la_SOURCES = \
arc4random.c \
arc4random.h \
@ -175,23 +320,28 @@ index b3c8d5e..602f54e 100644
#include <string.h>
diff --git a/src/local-link.h b/src/local-link.h
index d518dcf..84694a2 100644
index 0d4351a..fc520af 100644
--- a/src/local-link.h
+++ b/src/local-link.h
@@ -27,7 +27,11 @@
@@ -27,6 +27,11 @@
#ifndef LIBBSD_LOCAL_LINK_H
#define LIBBSD_LOCAL_LINK_H
+#ifdef __MACH__
+#define libbsd_link_warning(symbol, msg)
+#define libbsd_symver_default(alias, symbol, version)
+#define libbsd_symver_variant(alias, symbol, version)
+#else
#define libbsd_link_warning(symbol, msg) \
static const char libbsd_emit_link_warning_##symbol[] \
__attribute__((used,section(".gnu.warning." #symbol))) = msg;
__attribute__((__used__,__section__(".gnu.warning." #symbol))) = msg;
@@ -45,3 +50,4 @@
#endif
#endif
+#endif
diff --git a/src/nlist.c b/src/nlist.c
index 0932f59..4502048 100644
index 228c220..46c2d77 100644
--- a/src/nlist.c
+++ b/src/nlist.c
@@ -41,6 +41,7 @@
@ -202,7 +352,7 @@ index 0932f59..4502048 100644
#include "local-elf.h"
#define SIZE_T_MAX 0xffffffffU
@@ -265,3 +266,4 @@ nlist(const char *name, struct nlist *list)
@@ -280,3 +281,4 @@ nlist(const char *name, struct nlist *list)
(void)close(fd);
return (n);
}
@ -227,12 +377,12 @@ index f9f6195..2bc5fb4 100644
static void handler(int);
diff --git a/src/setproctitle.c b/src/setproctitle.c
index 038ac7d..e9ee09c 100644
index ff32aa3..51ed833 100644
--- a/src/setproctitle.c
+++ b/src/setproctitle.c
@@ -32,6 +32,10 @@
#include <unistd.h>
@@ -33,6 +33,10 @@
#include <string.h>
#include "local-link.h"
+#ifdef __MACH__
+extern char **environ;
@ -241,30 +391,16 @@ index 038ac7d..e9ee09c 100644
static struct {
/* Original value. */
const char *arg0;
@@ -280,16 +284,22 @@ setproctitle_impl(const char *fmt, ...)
*++nul = '\0';
}
}
+#ifndef __MACH__
__asm__(".symver setproctitle_impl,setproctitle@@LIBBSD_0.5");
+#endif
/* The original function introduced in 0.2 was a stub, it only got implemented
@@ -287,7 +291,8 @@ libbsd_symver_default(setproctitle, setproctitle_impl, LIBBSD_0.5);
* in 0.5, make the implementation available in the old version as an alias
* for code linking against that version, and change the default to use the
* new version, so that new code depends on the implemented version. */
-#ifdef HAVE_TYPEOF
+#ifdef __MACH__
+void setproctitle_stub(const char *fmt, ...);
+#elif HAVE_TYPEOF
extern typeof(setproctitle_impl) setproctitle_stub __attribute__((alias("setproctitle_impl")));
#else
void setproctitle_stub(const char *fmt, ...)
__attribute__((alias("setproctitle_impl")));
#endif
+#ifndef __MACH__
__asm__(".symver setproctitle_stub,setproctitle@LIBBSD_0.2");
+#endif
+#elif defined(HAVE_TYPEOF)
extern __typeof__(setproctitle_impl)
setproctitle_stub
__attribute__((__alias__("setproctitle_impl")));
diff --git a/src/strlcat.c b/src/strlcat.c
index 14c53a1..5961c17 100644
--- a/src/strlcat.c
@ -316,46 +452,3 @@ index e6afde5..da680c9 100644
*p = '\0';
}
+#endif
diff --git a/src/unvis.c b/src/unvis.c
index 94e3e7a..fba4c66 100644
--- a/src/unvis.c
+++ b/src/unvis.c
@@ -565,11 +565,15 @@ strnunvis_openbsd(char *dst, const char *src, size_t dlen)
{
return strnunvisx(dst, dlen, src, 0);
}
+#ifndef __MACH__
__asm__(".symver strnunvis_openbsd,strnunvis@@LIBBSD_0.2");
+#endif
int
strnunvis_netbsd(char *dst, size_t dlen, const char *src)
{
return strnunvisx(dst, dlen, src, 0);
}
+#ifndef __MACH__
__asm__(".symver strnunvis_netbsd,strnunvis@LIBBSD_0.9.1");
+#endif
diff --git a/src/vis.c b/src/vis.c
index c2cd2d8..2d84330 100644
--- a/src/vis.c
+++ b/src/vis.c
@@ -723,14 +723,18 @@ strnvis_openbsd(char *mbdst, const char *mbsrc, size_t dlen, int flags)
{
return istrsenvisxl(&mbdst, &dlen, mbsrc, flags, "", NULL);
}
+#ifndef __MACH__
__asm__(".symver strnvis_openbsd,strnvis@@LIBBSD_0.2");
+#endif
int
strnvis_netbsd(char *mbdst, size_t dlen, const char *mbsrc, int flags)
{
return istrsenvisxl(&mbdst, &dlen, mbsrc, flags, "", NULL);
}
+#ifndef __MACH__
__asm__(".symver strnvis_netbsd,strnvis@LIBBSD_0.9.1");
+#endif
int
stravis(char **mbdstp, const char *mbsrc, int flags)

View file

@ -2,20 +2,18 @@
stdenv.mkDerivation rec {
pname = "libbsd";
version = "0.9.1";
version = "0.10.0";
src = fetchurl {
url = "https://libbsd.freedesktop.org/releases/${pname}-${version}.tar.xz";
sha256 = "1957w2wi7iqar978qlfsm220dwywnrh5m58nrnn9zmi74ds3bn2n";
sha256 = "11x8q45jvjvf2dvgclds64mscyg10lva33qinf2hwgc84v3svf1l";
};
# darwin changes configure.ac which means we need to regenerate
# the configure scripts
nativeBuildInputs = [ autoreconfHook ];
patches = stdenv.lib.optional stdenv.isDarwin ./darwin.patch
# Suitable for all but limited to musl to avoid rebuild
++ stdenv.lib.optional stdenv.hostPlatform.isMusl ./musl.patch;
patches = [ ./darwin.patch ];
meta = with stdenv.lib; {
description = "Common functions found on BSD systems";

View file

@ -1,14 +0,0 @@
Source: maxice8
Upstream: no
Reason: fixes compilation
--- a/src/flopen.c
+++ b/src/flopen.c
@@ -34,6 +34,7 @@
#include <errno.h>
#include <stdarg.h>
#include <unistd.h>
+#include <fcntl.h>
#include <libutil.h>