diff options
| author | Alec Theriault <alec.theriault@gmail.com> | 2018-12-07 23:18:15 -0500 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-12-07 23:18:16 -0500 |
| commit | cb882fc993b4972f7f212b291229ef9e9ade0af9 (patch) | |
| tree | b36cd838f6eb1ee357ac0d118ee367b19f43aa3d /configure.ac | |
| parent | bd80831610092fef2f540abe9725e177c1ef0df8 (diff) | |
| download | haskell-cb882fc993b4972f7f212b291229ef9e9ade0af9.tar.gz | |
Require 'libdw' for '--enable-dwarf-unwind'
This causes './configure --enable-dwarf-unwind' to exit with a helpful
error message when 'libdw' cannot be found (compared to the previous
behaviour of silently pretending the user hadn't requested DWARF support
at all).
Test Plan: ./configure --enable-dwarf-unwind # on systems with/without
libdw
Reviewers: bgamari, nh2
Reviewed By: nh2
Subscribers: nh2, rwbarton, erikd, carter
GHC Trac Issues: #15968
Differential Revision: https://phabricator.haskell.org/D5424
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 88eddca097..2cf98a79dc 100644 --- a/configure.ac +++ b/configure.ac @@ -1248,7 +1248,9 @@ USE_LIBDW=0 AC_ARG_ENABLE(dwarf-unwind, [AC_HELP_STRING([--enable-dwarf-unwind], [Enable DWARF unwinding support in the runtime system via elfutils' libdw [default=no]])], - [AC_CHECK_LIB(dw, dwfl_attach_state, [UseLibdw=YES], [UseLibdw=NO])], + [AC_CHECK_LIB(dw, dwfl_attach_state, + [UseLibdw=YES], + [AC_MSG_ERROR([Cannot find system libdw (required by --enable-dwarf-unwind)])])] [UseLibdw=NO] ) AC_SUBST(UseLibdw) |