From: Simon Kuenzer <simon.kuenzer@neclab.eu>
Date: Mon, 26 Apr 2021 14:28:29 +0000 (+0200)
Subject: build: Introduce `mk_sub_libbuild_dir`
X-Git-Tag: RELEASE-0.6~221
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=9d6d85530967184de97ab9b07d4d803ba7d8b2a6;p=unikraft%2Funikraft.git

build: Introduce `mk_sub_libbuild_dir`

Inline with `mk_sub_build_dir`, this commit introduces
`mk_sub_libbuild_dir` that enables creating a sub build
directory for a library. This new Makefile command has
two parameters: (1) library name, (2) sub directory
structure.

Signed-off-by: Simon Kuenzer <simon.kuenzer@neclab.eu>
Reviewed-by: Cezar Craciunoiu <cezar.craciunoiu@gmail.com>
Tested-by: Unikraft CI <monkey@unikraft.io>
GitHub-Pull-Request: #194
---

diff --git a/support/build/Makefile.rules b/support/build/Makefile.rules
index ec28b9610..e6de319c3 100644
--- a/support/build/Makefile.rules
+++ b/support/build/Makefile.rules
@@ -226,6 +226,14 @@ define addplatlib_s =
 $(if $(filter y,$(3)),$(call addplatlib,$(1),$(2)),)
 endef
 
+# creates a sub build directory for a library
+# $libname,$subdir
+define mk_sub_libbuild_dir =
+$(if $(shell mkdir -p "$(BUILD_DIR)/$(1)/$(2)" && cd "$(BUILD_DIR)/$(1)/$(2)" >/dev/null && pwd),,\
+     $(error could not create directory "$(BUILD_DIR)/$(1)/$(2)"))
+endef
+
+sub_libbuild_dir = $(BUILD_DIR)/$(1)/$(2)
 
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