diff --git a/eigen3.changes b/eigen3.changes
index fbc6315..e55d320 100644
--- a/eigen3.changes
+++ b/eigen3.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Wed Nov  4 13:27:10 UTC 2020 - Atri Bhattacharya <badshah400@gmail.com>
+
+- Drop eigen_pkgconfig.patch: the includedir now needs to be
+  specified relative to CMAKE_INSTALL_PREFIX, so this patch causes
+  the includedir in the pkgconfig file to be erroneousi
+  (boo#1178139).
+- Use %autosetup to automatically run through patches.
+
 -------------------------------------------------------------------
 Sun Oct 25 21:45:11 UTC 2020 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
 
diff --git a/eigen3.spec b/eigen3.spec
index 19d2c4e..44adaf1 100644
--- a/eigen3.spec
+++ b/eigen3.spec
@@ -35,8 +35,6 @@ URL:            http://eigen.tuxfamily.org/
 Source0:        https://gitlab.com/libeigen/eigen/-/archive/%{version}/%{srcname}-%{version}.tar.bz2
 Patch0:         0001-Disable-Altivec-for-ppc64le.patch
 Patch1:         0001-Do-stack-allignment-on-ppc.patch
-# PATCH-FIX-OPENSUSE eigen_pkgconfig.patch asterios.dramis@gmail.com -- Fix pkg-config file includedir
-Patch2:         eigen_pkgconfig.patch
 # PATCH-FIX-OPENSUSE 01_install_FindEigen3.patch asterios.dramis@gmail.com -- Install FindEigen3.cmake
 Patch3:         01_install_FindEigen3.patch
 # PATCH-FIX-OPENSUSE eigen3-3.3.1-fixcmake.patch -- Fix double {prefix} as we use INCLUDE_INSTALL_DIR with {_includedir}
@@ -98,14 +96,7 @@ for Linear Algebra
 %endif
 
 %prep
-%setup -q -n %{srcname}-%{version}
-%patch0 -p1
-%patch1 -p1
-%patch2 -p1
-%patch3 -p1
-%patch4 -p1
-%patch5 -p1
-%patch6 -p1
+%autosetup -p1 -n %{srcname}-%{version}
 
 # Fix rpmlint warning "wrong-file-end-of-line-encoding"
 sed -i 's/\r$//' COPYING.MINPACK
diff --git a/eigen_pkgconfig.patch b/eigen_pkgconfig.patch
deleted file mode 100644
index 843cd6d..0000000
--- a/eigen_pkgconfig.patch
+++ /dev/null
@@ -1,10 +0,0 @@
-Index: eigen-3.3.8/eigen3.pc.in
-===================================================================
---- eigen-3.3.8.orig/eigen3.pc.in
-+++ eigen-3.3.8/eigen3.pc.in
-@@ -6,4 +6,4 @@ Description: A C++ template library for
- Requires:
- Version: @EIGEN_VERSION_NUMBER@
- Libs:
--Cflags: -I${prefix}/@INCLUDE_INSTALL_DIR@
-+Cflags: -I@INCLUDE_INSTALL_DIR@