From 00a7fd8f00b7ff671574557b4638451d1141b8b1 Mon Sep 17 00:00:00 2001
From: Olaf Meeuwissen <paddy-hack@member.fsf.org>
Date: Mon, 23 Mar 2020 21:59:41 +0900
Subject: [PATCH] Add linker flags for JPEG library when checking for functions

---
 configure.ac | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/configure.ac b/configure.ac
index 5ce16a263..d927f8b2b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -697,7 +697,10 @@ fi
 
 if test "${sane_cv_use_libjpeg}" = "yes"; then
   SANEI_SANEI_JPEG_LO="../sanei/sanei_jpeg.lo"
+  saved_LIBS="${LIBS}"
+  LIBS="${JPEG_LIBS}"
   AC_CHECK_FUNCS(jpeg_crop_scanline jpeg_skip_scanlines)
+  LIBS="${saved_LIBS}"
 fi
 AM_CONDITIONAL(HAVE_JPEG, test x$sane_cv_use_libjpeg = xyes)
 AC_SUBST(SANEI_SANEI_JPEG_LO)