--- ngtcp2-1.0.0/CMakeLists.txt.orig	2022-10-29 12:52:40 +0000
+++ ngtcp2-1.0.0/CMakeLists.txt	2022-10-29 12:52:25 +0000
@@ -457,9 +457,9 @@
 set(abs_top_builddir "${CMAKE_CURRENT_BINARY_DIR}")
 # libnghttp3.pc (pkg-config file)
 set(prefix          "${CMAKE_INSTALL_PREFIX}")
-set(exec_prefix     "${CMAKE_INSTALL_PREFIX}")
-set(libdir          "${CMAKE_INSTALL_FULL_LIBDIR}")
-set(includedir      "${CMAKE_INSTALL_FULL_INCLUDEDIR}")
+set(exec_prefix     "\${prefix}")
+set(libdir          "\${exec_prefix}/${CMAKE_INSTALL_LIBDIR}")
+set(includedir      "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
 set(VERSION         "${PACKAGE_VERSION}")
 # For init scripts and systemd service file (in contrib/)
 set(bindir          "${CMAKE_INSTALL_FULL_BINDIR}")
