From: Michael Tremer <michael.tremer@ipfire.org>
Date: Wed, 5 May 2021 22:38:38 +0000 (+0000)
Subject: gcc: Enable LTO linker plugin by default
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=refs%2Fheads%2Flto;p=people%2Fms%2Fipfire-2.x.git

gcc: Enable LTO linker plugin by default

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---

diff --git a/config/rootfiles/common/x86_64/gcc b/config/rootfiles/common/x86_64/gcc
index f6262683e2..db60ad53ef 100644
--- a/config/rootfiles/common/x86_64/gcc
+++ b/config/rootfiles/common/x86_64/gcc
@@ -855,6 +855,7 @@
 #usr/include/c++/11.1.0/x86_64-pc-linux-gnu/bits/time_members.h
 #usr/include/c++/11.1.0/x86_64-pc-linux-gnu/ext
 #usr/include/c++/11.1.0/x86_64-pc-linux-gnu/ext/opt_random.h
+#usr/lib/bfd-plugins/liblto_plugin.so
 #usr/lib/gcc
 #usr/lib/gcc/x86_64-pc-linux-gnu
 #usr/lib/gcc/x86_64-pc-linux-gnu/11.1.0
diff --git a/lfs/gcc b/lfs/gcc
index d4c4695147..ffe9c1cb23 100644
--- a/lfs/gcc
+++ b/lfs/gcc
@@ -72,7 +72,7 @@ ifeq "$(ROOT)" ""
 	--enable-threads=posix \
 	--enable-__cxa_atexit \
 	--enable-clocale=gnu \
-	--enable-languages=c,c++ \
+	--enable-languages=c,c++,lto \
 	--disable-bootstrap \
 	--disable-nls
   EXTRA_MAKE =
@@ -105,7 +105,7 @@ ifeq "$(PASS)" "1"
 	--without-headers \
 	--without-ppl \
 	--without-cloog \
-	--enable-languages=c,c++
+	--enable-languages=c,c++,lto
   EXTRA_MAKE = 
   EXTRA_INSTALL = 
 else
@@ -121,7 +121,7 @@ ifeq "$(PASS)" "2"
 	--prefix=$(TOOLS_DIR) \
 	--with-local-prefix=$(TOOLS_DIR) \
 	--with-native-system-header-dir=$(TOOLS_DIR)/include \
-	--enable-languages=c,c++ \
+	--enable-languages=c,c++,lto \
 	--disable-libstdcxx-pch \
 	--disable-libgomp
   EXTRA_MAKE = 
@@ -294,12 +294,22 @@ endif
 ifeq "$(TOOLCHAIN)" "1"
  ifeq "$(PASS)" "1"
 	ln -svf libgcc.a $$($(TOOLS_DIR)/bin/$(CROSSTARGET)-gcc -print-libgcc-file-name | sed 's/libgcc/&_eh/')
+
+	# Always enable LTO plugin
+	ln -svf --relative \
+		$(TOOLS_DIR)/libexec/gcc/$(CROSSTARGET)/$(VER)/liblto_plugin.so \
+		$(TOOLS_DIR)/lib/bfd-plugins
  endif
 
  ifeq "$(PASS)" "2"
 	ln -svf gcc $(TOOLS_DIR)/bin/cc
 	# remove gdb python files from libdir
 	rm -rf $(TOOLS_DIR)/lib/*-gdb.py
+
+	# Always enable LTO plugin
+	ln -svf --relative \
+		$(TOOLS_DIR)/libexec/gcc/$(BUILDTARGET)/$(VER)/liblto_plugin.so \
+		$(TOOLS_DIR)/lib/bfd-plugins
  endif
 
  ifeq "$(PASS)" "L"
@@ -312,6 +322,9 @@ else # NON-TOOLCHAIN
 	ln -svf gcc /usr/bin/cc
 	# remove gdb python files from libdir
 	rm -rf /usr/lib/*-gdb.py
+
+	# Always enable LTO plugin
+	ln -svf $$(/usr/bin/gcc --print-file-name=liblto_plugin.so) /usr/lib/bfd-plugins
 endif
 
 	@rm -rf $(DIR_APP) $(DIR_SRC)/gcc-build