introduced fix for non-portable Makefiles generated by cmake

R-package/src/install.libs.R

@@ -99,6 +99,32 @@ if (!use_precompile) {
 
   # Install
   system(paste0(cmake_cmd, " .."))
+
+  # R CMD check complains about the .NOTPARALLEL directive created in the cmake
+  # Makefile. We don't need it here anyway since targets are built serially, so trying
+  # to remove it with this hack
+  generated_makefile <- file.path(
+    R_PACKAGE_SOURCE
+    , "src"
+    , "build"
+    , "Makefile"
+  )
+  if (file.exists(generated_makefile)) {
+    makefile_txt <- readLines(
+      con = generated_makefile
+    )
+    makefile_txt <- gsub(
+      pattern = ".*NOTPARALLEL.*"
+      , replacement = ""
+      , x = makefile_txt
+    )
+    writeLines(
+      text = makefile_txt
+      , con = generated_makefile
+      , sep = "\n"
+    )
+  }
+
   system(build_cmd)
   src <- file.path(lib_folder, paste0("lib_lightgbm", SHLIB_EXT), fsep = "/")