https://sourceware.org/bugzilla/show_bug.cgi?id=33103
Bug ID: 33103
Summary: elfutils fails in-tree build due to ./stack binary
#included via <stack>
Product: elfutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: general
Assignee: unassigned at sourceware dot org
Reporter: slyich at gmail dot com
CC: elfutils-devel at sourceware dot org
Target Milestone: ---
https://sourceware.org/pipermail/elfutils-devel/2024q3/007281.html has a bit of
prior discussion and even a has fix submitted
(https://sourceware.org/git/?p=elfutils.git;a=commitdiff;h=b426c4db31e7c80d4262abdd845d2ece0c9a841c).
Unfortunately the fix still fails in some scenarios: in-tree libc++ builds.
The simplest way to reproduce the build on `gcc` failure is to add `#include
<stack>` into `src/srcfiles.cxx`:
--- a/src/srcfiles.cxx
+++ b/src/srcfiles.cxx
@@ -40,6 +40,7 @@
#include <cassert>
#include <gelf.h>
#include <memory>
+#include <stack> /* simulate transitive include on libc++ */
#ifdef ENABLE_LIBDEBUGINFOD
#include "debuginfod.h"
Now we can fail the build on `gcc`:
$ autoreconf -ifv && ./configure --enable-maintainer-mode && make && make check
...
Making all in src
CXX srcfiles.o
In file included from srcfiles.cxx:43:
./stack:1:1: error: stray '\177' in program
1 | <U+007F>ELF<U+0002><U+0001><U+0001><U+0000><
This happens because src/Makefile still contains `-I .`:
srcdir = .
...
AM_CPPFLAGS = -iquote . -I$(srcdir) ...
As a workaround nixpkgs now uses out-of-tree builds as:
mkdir build-tree
cd build-tree
../configure ...
But it would be nice to fix the collision for in-tree builds.
For libc++ build failure `<stack>` is included transitively via <iostream>:
In file included from srcfiles.cxx:50:
In file included from
/nix/store/7mk6c0p1jvxm3vq2my5swi5jlidby1h7-libcxx-x86_64-unknown-linux-gnu-19.1.7-dev/include/c++/v1/iostream:43:
In file included from
/nix/store/7mk6c0p1jvxm3vq2my5swi5jlidby1h7-libcxx-x86_64-unknown-linux-gnu-19.1.7-dev/include/c++/v1/istream:1367:
In file included from
/nix/store/7mk6c0p1jvxm3vq2my5swi5jlidby1h7-libcxx-x86_64-unknown-linux-gnu-19.1.7-dev/include/c++/v1/ostream:194:
In file included from
/nix/store/7mk6c0p1jvxm3vq2my5swi5jlidby1h7-libcxx-x86_64-unknown-linux-gnu-19.1.7-dev/include/c++/v1/format:246:
./stack:1:1: error: expected unqualified-id
1 | <U+007F>ELF<U+0002><U+0001><U+0001>...
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