From a0874adadf0d89e66966134e2597a310c0ca0823 Mon Sep 17 00:00:00 2001
From: Mohammad Rasim <mohammad.rasim96@gmail.com>
Date: Tue, 5 Feb 2019 08:05:03 +0300
Subject: [PATCH] fix linking in Gnu/Linux This fixes the following error:
 /usr/bin/ld: idevicerestore-idevicerestore.o: undefined reference to symbol
 'gzclose' /usr/bin/ld: /usr/lib/libz.so.1: error adding symbols: DSO missing
 from command line

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

diff --git a/configure.ac b/configure.ac
index 8f4012ba..b51cd0c3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -29,6 +29,7 @@ AC_SUBST(LIBZIP_VERSION)
 AC_SUBST(LIBCURL_VERSION)
 AC_SUBST(OPENSSL_VERSION)
 
+
 # Checks for programs.
 AC_PROG_CC
 AM_PROG_CC_C_O
@@ -42,6 +43,7 @@ PKG_CHECK_MODULES(libplist, libplist >= $LIBPLIST_VERSION)
 PKG_CHECK_MODULES(libzip, libzip >= $LIBZIP_VERSION)
 PKG_CHECK_MODULES(libcurl, libcurl >= $LIBCURL_VERSION)
 PKG_CHECK_MODULES(openssl, openssl >= $OPENSSL_VERSION)
+PKG_CHECK_MODULES(zlib, zlib)
 
 GLOBAL_CFLAGS=""
 AC_LDADD=""
@@ -50,6 +52,7 @@ case "$host_os" in
 	darwin*)
 	;;
 	linux*)
+	GLOBAL_CFLAGS+="-lpthread -lz"
 	;;
 	mingw*)
 		GLOBAL_CFLAGS+="-DWIN32 -D__LITTLE_ENDIAN__=1"