From 2858cfe82e3a89ad828c5ee64ce868f870a90ef4 Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Sun, 10 Dec 2023 00:21:53 -0500
Subject: [PATCH 1/2] CMakeLists.txt: use CMAKE_INSTALL_FULL_* to support
 absolute paths in CMAKE_INSTALL_*

CMAKE_INSTALL_* variables may be set to absolute paths, hence
concatenating with CMAKE_INSTALL_PREFIX is not always valid.

https://cmake.org/cmake/help/latest/module/GNUInstallDirs.html
---
 CMakeLists.txt | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e161810..9eec629 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,8 +45,8 @@ message(STATUS "APFEL: APFEL_DOWNLOAD_PDFS=${APFEL_DOWNLOAD_PDFS}")
 # CONFIG SCRIPT ========================================================
 set(prefix ${CMAKE_INSTALL_PREFIX})
 set(exec_prefix "${prefix}")
-set(includedir "${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
-set(libdir "${prefix}/${CMAKE_INSTALL_LIBDIR}")
+set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
 set(PACKAGE_VERSION "${apfel_VERSION}")
 configure_file("${PROJECT_SOURCE_DIR}/bin/apfel-config.in" "${PROJECT_BINARY_DIR}/bin/apfel-config")
 configure_file("${PROJECT_SOURCE_DIR}/bin/apfel.in" "${PROJECT_BINARY_DIR}/bin/apfel")

From 5018457a1c16b061420e22611af5a32ed46b42cd Mon Sep 17 00:00:00 2001
From: Dmitry Kalinkin <dmitry.kalinkin@gmail.com>
Date: Sun, 10 Dec 2023 00:24:32 -0500
Subject: [PATCH 2/2] apfel-config.in: drop unused @exec_prefix@

---
 CMakeLists.txt      | 3 +--
 bin/apfel-config.in | 1 -
 2 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9eec629..3275ef4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -43,8 +43,7 @@ message(STATUS "APFEL: APFEL_ENABLE_LHAPDF=${APFEL_ENABLE_LHAPDF}")
 message(STATUS "APFEL: APFEL_DOWNLOAD_PDFS=${APFEL_DOWNLOAD_PDFS}")
 
 # CONFIG SCRIPT ========================================================
-set(prefix ${CMAKE_INSTALL_PREFIX})
-set(exec_prefix "${prefix}")
+set(prefix "${CMAKE_INSTALL_PREFIX}")
 set(includedir "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
 set(libdir "${CMAKE_INSTALL_FULL_LIBDIR}")
 set(PACKAGE_VERSION "${apfel_VERSION}")
diff --git a/bin/apfel-config.in b/bin/apfel-config.in
index f9959e0..0269444 100644
--- a/bin/apfel-config.in
+++ b/bin/apfel-config.in
@@ -2,7 +2,6 @@
 
 # These variables need to exist
 prefix=@prefix@
-exec_prefix=@exec_prefix@
 
 if [[ $# -eq 0 || -n $( echo $* | egrep -- "--help|-h" ) ]]; then
     echo