From f473ed548436935ec56fbe6d4fa49037c12bce1d Mon Sep 17 00:00:00 2001
From: Simon Josefsson <simon@josefsson.org>
Date: Fri, 19 Apr 2013 15:09:11 +0200
Subject: [PATCH] Make libjson optional.

---
 .gitignore   |  6 ++++--
 Makefile.am  |  7 ++++++-
 configure.ac | 12 ++++++++++--
 3 files changed, 20 insertions(+), 5 deletions(-)

diff --git a/.gitignore b/.gitignore
index 0e67d96..c73b9c3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -82,13 +82,15 @@ ykpers-*.tar.gz
 ykpers-*.tar.gz.sig
 ykpers-1.pc
 ykpers-args.o
+ykpers-json.lo
+ykpers-json.o
+ykpers-nojson.lo
+ykpers-nojson.o
 ykpers-version.h
 ykpers-version.lo
 ykpers-version.o
 ykpers.lo
 ykpers.o
-ykpers-json.lo
-ykpers-json.o
 ykpers_lcl.lo
 ykpers_lcl.o
 ykpersonalize
diff --git a/Makefile.am b/Makefile.am
index 0178fbb..7215717 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -45,7 +45,12 @@ ykpers_include_HEADERS += ykcore/ykstatus.h ykcore/ykcore.h ykcore/ykdef.h
 ykpers_include_HEADERS += ykpbkdf2.h
 
 lib_LTLIBRARIES = libykpers-1.la
-libykpers_1_la_SOURCES = ykpers.c ykpers-version.c ykpbkdf2.c ykpers-json.c
+libykpers_1_la_SOURCES = ykpers.c ykpers-version.c ykpbkdf2.c
+if JSON
+libykpers_1_la_SOURCES += ykpers-json.c
+else
+libykpers_1_la_SOURCES += ykpers-nojson.c
+endif
 libykpers_1_la_SOURCES += ykpers_lcl.h ykpers-json.h ykpers_lcl.c
 libykpers_1_la_SOURCES += rfc4634/hmac.c rfc4634/usha.c rfc4634/sha.h	\
 	rfc4634/sha1.c rfc4634/sha224-256.c rfc4634/sha384-512.c	\
diff --git a/configure.ac b/configure.ac
index 093f4b0..ec10bfa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -125,8 +125,16 @@ AM_CONDITIONAL([BACKEND_LIBUSB_1_0], test x$with_backend = xlibusb-1.0)
 AM_CONDITIONAL([BACKEND_OSX], test x$with_backend = xosx)
 AM_CONDITIONAL([BACKEND_WINDOWS], test x$with_backend = xwindows)
 
-PKG_CHECK_MODULES([libjson], [json-c], [], [
-  PKG_CHECK_MODULES([libjson], [json])])
+AC_ARG_WITH([json],
+            AC_HELP_STRING([--without-json], [without JSON YCFG support]),
+            [with_json=$withval], [with_json=yes])
+if test x$with_json = xyes; then
+  PKG_CHECK_MODULES([libjson], [json-c], [], [
+    PKG_CHECK_MODULES([libjson], [json], [], [with_json=no])])
+fi
+AC_MSG_CHECKING([whether to use json library])
+AC_MSG_RESULT([$with_json])
+AM_CONDITIONAL([JSON], [test "$with_json" = yes])
 
 # Check for json_object_to_json_string_ext, needed for pretty printing.
 am_save_CFLAGS="$CFLAGS"
-- 
2.39.5