From 73e4da5ca780196d23db8029dcd28f87a0402711 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Mon, 29 May 2017 23:03:48 +0300
Subject: [PATCH] Add a --{enable,disable}-progs configure option

Add a --{enable,disable}-progs configuration option to elfutils. This
allows to selectively disable the compilation of the elfutils programs
(in which case only the libraries are built and installed). This is
useful because the programs are often not needed, and also because
building the programs against uClibc causes several issues (lack of
obstack_printf() in uClibc for example).

Based on the former patch by Thomas Petazzoni.

[Vincent: tweak patch for 0.166]
[Bernd: rebased patch for 0.177]

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
[Rebased on 0.183]
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
[Fabrice: don't error out if obstack is not found]
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
---
 Makefile.am  | 6 +++++-
 configure.ac | 6 ++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/Makefile.am b/Makefile.am
index 9c47afa..edf8dfc 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -26,8 +26,12 @@ AM_MAKEFLAGS = --no-print-directory
 
 pkginclude_HEADERS = version.h
 
+if ENABLE_PROGS
+PROGS_SUBDIR = src
+endif
+
 SUBDIRS = config lib libelf libcpu backends libebl libdwelf libdwfl libdw \
-	  libasm debuginfod src po doc tests
+	  libasm debuginfod $(PROGS_SUBDIR) po doc tests
 
 EXTRA_DIST = elfutils.spec GPG-KEY NOTES CONTRIBUTING \
 	     COPYING COPYING-GPLV2 COPYING-LGPLV3
diff --git a/configure.ac b/configure.ac
index d345495..0dd4b1e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -393,6 +393,12 @@ AS_HELP_STRING([--enable-tests-rpath],[build $ORIGIN-using rpath into tests]),
 	       [tests_use_rpath=$enableval], [tests_use_rpath=no])
 AM_CONDITIONAL(TESTS_RPATH, test "$tests_use_rpath" = yes)
 
+AC_ARG_ENABLE([progs],
+	AS_HELP_STRING([--enable-progs], [enable progs]),
+	enable_progs=$enableval,
+	enable_progs=yes)
+AM_CONDITIONAL(ENABLE_PROGS, test "$enable_progs" = yes)
+
 dnl zlib is mandatory.
 save_LIBS="$LIBS"
 LIBS=
@@ -579,7 +585,7 @@ saved_LIBS="$LIBS"
 AC_SEARCH_LIBS([_obstack_free], [obstack])
 LIBS="$saved_LIBS"
 case "$ac_cv_search__obstack_free" in
-        no) AC_MSG_FAILURE([failed to find _obstack_free]) ;;
+        no) obstack_LIBS= ;;
         -l*) obstack_LIBS="$ac_cv_search__obstack_free" ;;
         *) obstack_LIBS= ;;
 esac
-- 
2.30.1