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/gcc/common.mk        | 26 +++++++++++++++++++++++---
 toolchain/gcc/initial/Makefile |  2 +-
 toolchain/gcc/minimal/Makefile | 19 +------------------
 3 files changed, 25 insertions(+), 22 deletions(-)

(limited to 'toolchain/gcc')

diff --git a/toolchain/gcc/common.mk b/toolchain/gcc/common.mk
index eab143cbc6..9bc849152b 100644
--- a/toolchain/gcc/common.mk
+++ b/toolchain/gcc/common.mk
@@ -170,10 +170,30 @@ GCC_MAKE:= \
 		CFLAGS_FOR_TARGET="$(TARGET_CFLAGS)" \
 		CXXFLAGS_FOR_TARGET="$(TARGET_CFLAGS)"
 
-define Host/Prepare
-	mkdir -p $(GCC_BUILD_DIR)
+define Host/SetToolchainInfo
+	$(SED) 's,TARGET_CROSS=.*,TARGET_CROSS=$(REAL_GNU_TARGET_NAME)-,' $(TOOLCHAIN_DIR)/info.mk
+	$(SED) 's,GCC_VERSION=.*,GCC_VERSION=$(GCC_VERSION),' $(TOOLCHAIN_DIR)/info.mk
 endef
 
+ifneq ($(GCC_PREPARE),)
+  define Host/Prepare
+	$(call Host/SetToolchainInfo)
+	$(call Host/Prepare/Default)
+	ln -snf $(GCC_DIR) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
+	$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_SOURCE_DIR)/
+	$(SED) 's,^MULTILIB_OSDIRNAMES,# MULTILIB_OSDIRNAMES,' $(HOST_SOURCE_DIR)/gcc/config/*/t-*
+	$(SED) 'd' $(HOST_SOURCE_DIR)/gcc/DEV-PHASE
+	$(SED) 's, DATESTAMP,,' $(HOST_SOURCE_DIR)/gcc/version.c
+	#(cd $(HOST_SOURCE_DIR)/libstdc++-v3; autoconf;);
+	$(SED) 's,gcc_no_link=yes,gcc_no_link=no,' $(HOST_SOURCE_DIR)/libstdc++-v3/configure
+	mkdir -p $(GCC_BUILD_DIR)
+  endef
+else
+  define Host/Prepare
+	mkdir -p $(GCC_BUILD_DIR)
+  endef
+endif
+
 define Host/Configure
 	(cd $(GCC_BUILD_DIR) && rm -f config.cache; \
 		$(GCC_CONFIGURE) \
@@ -181,7 +201,7 @@ define Host/Configure
 endef
 
 define Host/Clean
-	rm -rf \
+	rm -rf $(if $(GCC_PREPARE),$(HOST_SOURCE_DIR)) \
 		$(STAGING_DIR_HOST)/stamp/.gcc_* \
 		$(STAGING_DIR_HOST)/stamp/.binutils_* \
 		$(GCC_BUILD_DIR) \
diff --git a/toolchain/gcc/initial/Makefile b/toolchain/gcc/initial/Makefile
index f0c65b528c..1ed548436e 100644
--- a/toolchain/gcc/initial/Makefile
+++ b/toolchain/gcc/initial/Makefile
@@ -1,4 +1,5 @@
 GCC_VARIANT:=initial
+GCC_PREPARE=$(CONFIG_USE_MUSL)
 
 include ../common.mk
 
@@ -10,7 +11,6 @@ GCC_CONFIGURE += \
 	--disable-threads \
 
 define Host/Compile
-	$(CP) $(BUILD_DIR_TOOLCHAIN)/linux-dev/* $(BUILD_DIR_TOOLCHAIN)/$(LIBC)-dev/
 	+$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) \
 		all-build-libiberty \
 		all-gcc \
diff --git a/toolchain/gcc/minimal/Makefile b/toolchain/gcc/minimal/Makefile
index 0344e1a7ec..31d6f675ab 100644
--- a/toolchain/gcc/minimal/Makefile
+++ b/toolchain/gcc/minimal/Makefile
@@ -1,4 +1,5 @@
 GCC_VARIANT:=minimal
+GCC_PREPARE=$(if $(CONFIG_USE_MUSL),,1)
 
 include ../common.mk
 
@@ -11,24 +12,6 @@ GCC_CONFIGURE += \
 	--disable-shared \
 	--disable-threads
 
-define Host/SetToolchainInfo
-	$(SED) 's,TARGET_CROSS=.*,TARGET_CROSS=$(REAL_GNU_TARGET_NAME)-,' $(TOOLCHAIN_DIR)/info.mk
-	$(SED) 's,GCC_VERSION=.*,GCC_VERSION=$(GCC_VERSION),' $(TOOLCHAIN_DIR)/info.mk
-endef
-
-define Host/Prepare
-	$(call Host/SetToolchainInfo)
-	$(call Host/Prepare/Default)
-	ln -snf $(GCC_DIR) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
-	$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_BUILD_DIR)/
-	$(SED) 's,^MULTILIB_OSDIRNAMES,# MULTILIB_OSDIRNAMES,' $(HOST_BUILD_DIR)/gcc/config/*/t-*
-	$(SED) 'd' $(HOST_BUILD_DIR)/gcc/DEV-PHASE
-	$(SED) 's, DATESTAMP,,' $(HOST_BUILD_DIR)/gcc/version.c
-	#(cd $(HOST_BUILD_DIR)/libstdc++-v3; autoconf;);
-	$(SED) 's,gcc_no_link=yes,gcc_no_link=no,' $(HOST_BUILD_DIR)/libstdc++-v3/configure
-	mkdir -p $(GCC_BUILD_DIR)
-endef
-
 define Host/Compile
 	+$(GCC_MAKE) $(HOST_JOBS) -C $(GCC_BUILD_DIR) all-gcc all-target-libgcc
 endef
-- 
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