diff options
Diffstat (limited to 'package/btrfs-progs/0001-configure-refactor-backtrace-detection.patch')
| -rw-r--r-- | package/btrfs-progs/0001-configure-refactor-backtrace-detection.patch | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/package/btrfs-progs/0001-configure-refactor-backtrace-detection.patch b/package/btrfs-progs/0001-configure-refactor-backtrace-detection.patch deleted file mode 100644 index 0f834ded94..0000000000 --- a/package/btrfs-progs/0001-configure-refactor-backtrace-detection.patch +++ /dev/null @@ -1,132 +0,0 @@ -From 9bef473d17ec01efe760462271791dfaaea280c0 Mon Sep 17 00:00:00 2001 -From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Date: Wed, 29 Jul 2015 22:35:19 +0200 -Subject: [PATCH 1/3] configure: refactor backtrace() detection - -The current code assumes that if __GLIBC__ is not defined, backtrace -support is not available, and defines BTRFS_DISABLE_BACKTRACE. - -However, this macro is already defined by the configure.ac script when ---disable-backtrace is passed. This means that if you are using a C -library like musl which does not define __GLIBC__, and you pass ---disable-backtrace, you get a macro redefinition. - -Instead of relying on __GLIBC__, this commit implements a proper -configure.ac based detection of backtrace support: - - * If the user passes --enable-backtrace, we check if the backtrace() - function is available. If not, we abort the configure process with - an error. Otherwise we enable backtrace support by defining - HAVE_BACKTRACE. - - * If the user passes --disable-backtrace, then we don't enable - backtrace support. - - * If the user passes nothing special, we auto-detect: if backtrace() - is available, we use it, otherwise we simply warn at configure time - but not fail. - -Upstream-status: pending -Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> -Signed-off-by: Brendan Heading <brendanheading@gmail.com> ---- - configure.ac | 32 ++++++++++++++++++++++---------- - kerncompat.h | 9 ++++----- - 2 files changed, 26 insertions(+), 15 deletions(-) - -diff --git a/configure.ac b/configure.ac -index c3a22d1..e936a10 100644 ---- a/configure.ac -+++ b/configure.ac -@@ -63,22 +63,34 @@ AC_DEFUN([PKG_STATIC], [ - fi - ]) - -- -+# Provide a --{enable,disable}-backtrace option. If not passed, set -+# enable_backtrace to 'auto' so that we try to enable backtrace -+# support if available, but if not available, we gracefully fallback -+# without backtrace support. - AC_ARG_ENABLE([backtrace], - AS_HELP_STRING([--disable-backtrace], [disable btrfs backtrace]), -- [], [enable_backtrace=yes] -+ [enable_backtrace=${enableval}], [enable_backtrace=auto] - ) - --AS_IF([test "x$enable_backtrace" = xno], [ -- AC_DEFINE([BTRFS_DISABLE_BACKTRACE], [1], [disable backtrace stuff in kerncompat.h ]) --]) -- --if test "x$enable_backtrace" = xyes; then -- AC_CHECK_HEADERS([execinfo.h]) -- AC_CHECK_FUNCS([backtrace backtrace_symbols_fd], [], -- AC_MSG_ERROR([standard library does not have backtrace support])) -+# Backtrace support requested (enable_backtrace is either 'yes' or -+# 'auto'), so check for needed headers and functions. -+if test "x$enable_backtrace" != xno; then -+ AC_CHECK_HEADERS([execinfo.h]) -+ AC_CHECK_FUNCS([backtrace backtrace_symbols_fd]) - fi - -+if test "x$ac_cv_func_backtrace" = xno; then -+ # If backtrace support was requested but not available, we fail if -+ # --enable-backtrace was passed, or we simply warn if we're -+ # auto-detecting. -+ if test "x$enable_backtrace" = xyes ; then -+ AC_MSG_ERROR([standard library does not have backtrace support]) -+ elif test "x$enable_backtrace" = xauto ; then -+ AC_MSG_WARN([standard library does not have backtrace support, disabled]) -+ fi -+else -+ AC_DEFINE([HAVE_BACKTRACE], [1], [Enable backtrace support]) -+fi - - AC_ARG_ENABLE([documentation], - AS_HELP_STRING([--disable-documentation], [do not build domumentation]), -diff --git a/kerncompat.h b/kerncompat.h -index 5d92856..8318665 100644 ---- a/kerncompat.h -+++ b/kerncompat.h -@@ -33,11 +33,10 @@ - #include <features.h> - - #ifndef __GLIBC__ --#define BTRFS_DISABLE_BACKTRACE - #define __always_inline __inline __attribute__ ((__always_inline__)) - #endif - --#ifndef BTRFS_DISABLE_BACKTRACE -+#ifdef HAVE_BACKTRACE - #include <execinfo.h> - #endif - -@@ -65,7 +64,7 @@ - #define ULONG_MAX (~0UL) - #endif - --#ifndef BTRFS_DISABLE_BACKTRACE -+#ifdef HAVE_BACKTRACE - #define MAX_BACKTRACE 16 - static inline void print_trace(void) - { -@@ -285,7 +284,7 @@ static inline long IS_ERR(const void *ptr) - #define vmalloc(x) malloc(x) - #define vfree(x) free(x) - --#ifndef BTRFS_DISABLE_BACKTRACE -+#ifdef HAVE_BACKTRACE - #define BUG_ON(c) assert_trace(#c, __FILE__, __func__, __LINE__, !(c)) - #else - #define BUG_ON(c) assert(!(c)) -@@ -293,7 +292,7 @@ static inline long IS_ERR(const void *ptr) - - #define WARN_ON(c) BUG_ON(c) - --#ifndef BTRFS_DISABLE_BACKTRACE -+#ifdef HAVE_BACKTRACE - #define ASSERT(c) assert_trace(#c, __FILE__, __func__, __LINE__, (c)) - #else - #define ASSERT(c) assert(c) --- -2.4.3 - |
