From 74c9b9cfeb0e7cd045b969474a9bcd9ab38bd7d2 Mon Sep 17 00:00:00 2001
From: Felix Fietkau <nbd@nbd.name>
Date: Thu, 7 Jul 2016 14:12:30 +0200
Subject: toolchain: skip gcc/minimal for musl

No extra libc header build step is done, so no extra toolchain is needed
for preparing it.
This saves a significant amount of build time and disk space

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---
 toolchain/Makefile | 29 +++++++++++++++++++----------
 1 file changed, 19 insertions(+), 10 deletions(-)

(limited to 'toolchain/Makefile')

diff --git a/toolchain/Makefile b/toolchain/Makefile
index cd5399e041..7d2fddda31 100644
--- a/toolchain/Makefile
+++ b/toolchain/Makefile
@@ -24,33 +24,42 @@
 # 8) toolchain/libc/utils/install
 #    build & install libc utilities
 #
+# For musl, steps 2 and 4 are skipped, and step 3 is done after 5
 
 curdir:=toolchain
 
 # subdirectories to descend into
-$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_INSIGHT),insight) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/minimal gcc/initial gcc/final $(LIBC)/headers $(LIBC) fortify-headers)
+$(curdir)/builddirs := $(if $(CONFIG_GDB),gdb) $(if $(CONFIG_INSIGHT),insight) $(if $(CONFIG_EXTERNAL_TOOLCHAIN),wrapper,kernel-headers binutils gcc/initial gcc/final $(LIBC) fortify-headers)
 ifdef CONFIG_USE_UCLIBC
   $(curdir)/builddirs += $(LIBC)/utils
 endif
-$(curdir)/builddirs-compile:=$($(curdir)/builddirs-prepare)
-$(curdir)/builddirs-install:=$($(curdir)/builddirs-compile)
 
 # builddir dependencies
 ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
-  $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/install
-  $(curdir)/kernel-headers/install:=$(curdir)/gcc/minimal/install
-  $(curdir)/gcc/initial/prepare:=$(curdir)/gcc/minimal/prepare
-  $(curdir)/gcc/final/prepare:=$(curdir)/gcc/initial/prepare
+  ifdef CONFIG_USE_MUSL
+    $(curdir)/kernel-headers/compile:=$(curdir)/gcc/initial/install
+    $(curdir)/$(LIBC)/compile:=$(curdir)/kernel-headers/install
+  else
+    $(curdir)/builddirs += $(LIBC)/headers gcc/minimal
+    $(curdir)/gcc/minimal/compile:=$(curdir)/binutils/install
+    $(curdir)/kernel-headers/compile:=$(curdir)/gcc/minimal/install
+    $(curdir)/gcc/initial/prepare:=$(curdir)/gcc/minimal/prepare
+    $(curdir)/$(LIBC)/prepare:=$(curdir)/$(LIBC)/headers/prepare
+    $(curdir)/$(LIBC)/headers/compile:=$(curdir)/kernel-headers/install
+    $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/headers/install
+  endif
 
-  $(curdir)/$(LIBC)/headers/compile:=$(curdir)/kernel-headers/install
-  $(curdir)/gcc/initial/compile:=$(curdir)/$(LIBC)/headers/install
+  $(curdir)/gcc/initial/compile+=$(curdir)/binutils/install
+  $(curdir)/gcc/final/prepare:=$(curdir)/gcc/initial/prepare
   $(curdir)/$(LIBC)/compile:=$(curdir)/gcc/initial/install
   $(curdir)/gcc/final/compile:=$(curdir)/$(LIBC)/install
   $(curdir)/$(LIBC)/utils/compile:=$(curdir)/gcc/final/install
-  $(curdir)/$(LIBC)/prepare:=$(curdir)/$(LIBC)/headers/prepare
   $(curdir)/$(LIBC)/utils/prepare:=$(curdir)/$(LIBC)/headers/prepare
 endif
 
+$(curdir)/builddirs-compile:=$($(curdir)/builddirs-prepare)
+$(curdir)/builddirs-install:=$($(curdir)/builddirs-compile)
+
 ifndef DUMP_TARGET_DB
 ifneq ($(ARCH),)
   $(TOOLCHAIN_DIR)/info.mk: .config
-- 
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