108 lines
3.6 KiB
Diff
108 lines
3.6 KiB
Diff
From f409ee343fe6cdc059bb411746f27a515aec66a8 Mon Sep 17 00:00:00 2001
|
||
From: Jan Tojnar <jtojnar@gmail.com>
|
||
Date: Sat, 24 Dec 2022 16:46:18 +0100
|
||
Subject: [PATCH 2/4] libbacktrace: Allow configuring debug dir
|
||
MIME-Version: 1.0
|
||
Content-Type: text/plain; charset=UTF-8
|
||
Content-Transfer-Encoding: 8bit
|
||
|
||
On platforms that do not use FHS like NixOS or GNU Guix,
|
||
the build-id directories are not under `/usr/lib/debug`.
|
||
|
||
Let’s add `--with-separate-debug-dir` configure flag so that
|
||
the path can be changed. The same flag is supported by gdb:
|
||
|
||
https://github.com/bminor/binutils-gdb/blob/095f84c7e3cf85cd68c657c46b80be078f336bc9/gdb/configure.ac#L113-L115
|
||
---
|
||
Makefile.am | 11 ++++++-----
|
||
configure.ac | 8 ++++++++
|
||
elf.c | 4 ++--
|
||
3 files changed, 16 insertions(+), 7 deletions(-)
|
||
|
||
diff --git a/Makefile.am b/Makefile.am
|
||
index 6eab991..da443c1 100644
|
||
--- a/Makefile.am
|
||
+++ b/Makefile.am
|
||
@@ -33,7 +33,8 @@ ACLOCAL_AMFLAGS = -I config
|
||
|
||
AM_CPPFLAGS =
|
||
|
||
-AM_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) $(PIC_FLAG)
|
||
+AM_CFLAGS = $(EXTRA_FLAGS) $(WARN_FLAGS) $(PIC_FLAG) \
|
||
+ -DSYSTEM_DEBUG_DIR=\"$(SEPARATE_DEBUG_DIR)\"
|
||
|
||
include_HEADERS = backtrace.h backtrace-supported.h
|
||
|
||
@@ -134,7 +135,7 @@ libbacktrace_noformat_la_DEPENDENCIES = $(libbacktrace_noformat_la_LIBADD)
|
||
if HAVE_ELF
|
||
if HAVE_OBJCOPY_DEBUGLINK
|
||
|
||
-TEST_BUILD_ID_DIR=$(abs_builddir)/usr/lib/debug/.build-id/
|
||
+TEST_DEBUG_DIR=$(abs_builddir)/usr/lib/debug
|
||
|
||
check_LTLIBRARIES += libbacktrace_elf_for_test.la
|
||
|
||
@@ -143,8 +144,8 @@ libbacktrace_elf_for_test_la_LIBADD = $(BACKTRACE_FILE) elf_for_test.lo \
|
||
$(VIEW_FILE) $(ALLOC_FILE)
|
||
|
||
elf_for_test.c: elf.c
|
||
- SEARCH='^#define SYSTEM_BUILD_ID_DIR.*$$'; \
|
||
- REPLACE="#define SYSTEM_BUILD_ID_DIR \"$(TEST_BUILD_ID_DIR)\""; \
|
||
+ SEARCH='^#define BUILD_ID_DIR.*$$'; \
|
||
+ REPLACE='\0\n#undef SYSTEM_DEBUG_DIR\n#define SYSTEM_DEBUG_DIR "$(TEST_DEBUG_DIR)"'; \
|
||
$(SED) "s%$$SEARCH%$$REPLACE%" \
|
||
$< \
|
||
> $@.tmp
|
||
@@ -468,7 +469,7 @@ endif HAVE_OBJCOPY_DEBUGLINK
|
||
|
||
%_buildid: %
|
||
./install-debuginfo-for-buildid.sh \
|
||
- "$(TEST_BUILD_ID_DIR)" \
|
||
+ "$(TEST_DEBUG_DIR)/.build-id" \
|
||
$<
|
||
$(OBJCOPY) --strip-debug $< $@
|
||
|
||
diff --git a/configure.ac b/configure.ac
|
||
index 7f122cb..bb590ab 100644
|
||
--- a/configure.ac
|
||
+++ b/configure.ac
|
||
@@ -67,6 +67,14 @@ AM_MAINTAINER_MODE
|
||
AC_ARG_WITH(target-subdir,
|
||
[ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
|
||
|
||
+AC_ARG_WITH(separate-debug-dir,
|
||
+[ --with-separate-debug-dir=DEBUGDIR Look for global separate debug info in this path @<:@LIBDIR/debug@:>@],
|
||
+[separate_debug_dir=$withval],
|
||
+[separate_debug_dir=$libdir/debug])
|
||
+
|
||
+SEPARATE_DEBUG_DIR=$separate_debug_dir
|
||
+AC_SUBST(SEPARATE_DEBUG_DIR)
|
||
+
|
||
# We must force CC to /not/ be precious variables; otherwise
|
||
# the wrong, non-multilib-adjusted value will be used in multilibs.
|
||
# As a side effect, we have to subst CFLAGS ourselves.
|
||
diff --git a/elf.c b/elf.c
|
||
index e82ecc5..8b1189c 100644
|
||
--- a/elf.c
|
||
+++ b/elf.c
|
||
@@ -856,7 +856,7 @@ elf_readlink (struct backtrace_state *state, const char *filename,
|
||
}
|
||
}
|
||
|
||
-#define SYSTEM_BUILD_ID_DIR "/usr/lib/debug/.build-id/"
|
||
+#define BUILD_ID_DIR "/.build-id/"
|
||
|
||
/* Open a separate debug info file, using the build ID to find it.
|
||
Returns an open file descriptor, or -1.
|
||
@@ -870,7 +870,7 @@ elf_open_debugfile_by_buildid (struct backtrace_state *state,
|
||
backtrace_error_callback error_callback,
|
||
void *data)
|
||
{
|
||
- const char * const prefix = SYSTEM_BUILD_ID_DIR;
|
||
+ const char * const prefix = SYSTEM_DEBUG_DIR BUILD_ID_DIR;
|
||
const size_t prefix_len = strlen (prefix);
|
||
const char * const suffix = ".debug";
|
||
const size_t suffix_len = strlen (suffix);
|
||
--
|
||
2.38.1
|
||
|