eccodes: fix paths in pkg-config files

pkgs/development/libraries/eccodes/default.nix

@@ -24,6 +24,17 @@ stdenv.mkDerivation rec {
 
   postPatch = ''
     substituteInPlace cmake/FindOpenJPEG.cmake --replace openjpeg-2.1 ${openjpeg.incDir}
+
+    # https://github.com/ecmwf/ecbuild/issues/40
+    substituteInPlace cmake/ecbuild_config.h.in \
+      --replace @CMAKE_INSTALL_PREFIX@/@INSTALL_LIB_DIR@ @eccodes_FULL_INSTALL_LIB_DIR@ \
+      --replace @CMAKE_INSTALL_PREFIX@/@INSTALL_BIN_DIR@ @eccodes_FULL_INSTALL_BIN_DIR@
+    substituteInPlace cmake/pkg-config.pc.in \
+      --replace '$'{prefix}/@INSTALL_LIB_DIR@ @eccodes_FULL_INSTALL_LIB_DIR@ \
+      --replace '$'{prefix}/@INSTALL_INCLUDE_DIR@ @eccodes_FULL_INSTALL_INCLUDE_DIR@ \
+      --replace '$'{prefix}/@INSTALL_BIN_DIR@ @eccodes_FULL_INSTALL_BIN_DIR@
+    substituteInPlace cmake/ecbuild_install_project.cmake \
+      --replace '$'{CMAKE_INSTALL_PREFIX}/'$'{INSTALL_INCLUDE_DIR} '$'{'$'{PROJECT_NAME}_FULL_INSTALL_INCLUDE_DIR}
   '';
 
   nativeBuildInputs = [ cmake gfortran perl ];