From 63dbf8a9f04b34474021e8f0bf239b7446f10a7f Mon Sep 17 00:00:00 2001
From: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
Date: Thu, 3 Mar 2022 09:01:23 +0000
Subject: [PATCH] Fix libESMTP dependency check

Since libesmtp-1.1.0, libesmtp-config is removed, use pkg-config to
check for existence instead.

Signed-off-by: Jiaqing Zhao <jiaqing.zhao@linux.intel.com>
---
 configure.ac | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 64b19b4..83346a8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -11,6 +11,8 @@ AC_PROG_CC
 
 AC_HEADER_STDC
 
+PKG_PROG_PKG_CONFIG
+
 dnl getopt needs this
 AC_C_CONST
 
@@ -30,11 +32,11 @@ then
 	AC_CHECK_HEADER(libesmtp.h, ,[AC_MSG_ERROR([libesmtp.h not found in $with_libesmtp])])
 fi    
 AC_MSG_CHECKING(for libESMTP)
-if libesmtp-config --version > /dev/null 2>&1
+if $PKG_CONFIG --exists 'libesmtp-1.0'
 then
 	AC_MSG_RESULT(yes)
-	CFLAGS="$CFLAGS `libesmtp-config --cflags`"
-	LIBS="$LIBS `libesmtp-config --libs`"
+	CFLAGS="$CFLAGS `$PKG_CONFIG --cflags 'libesmtp-1.0'`"
+	LIBS="$LIBS `$PKG_CONFIG --libs 'libesmtp-1.0'`"
 else
 	AC_MSG_RESULT(no)
 	AC_MSG_ERROR(libESMTP library not found)
-- 
2.32.0