diff --git a/clean-classic/linux-x64/build.sh b/clean-classic/linux-x64/build.sh
index 5690136dae8ee2d0d0502173ac94569e0eea35e1..54ebcad2855c5efabc5add91002d2795e40b73e5 100755
--- a/clean-classic/linux-x64/build.sh
+++ b/clean-classic/linux-x64/build.sh
@@ -9,6 +9,7 @@ export BOOTCOMPILERPATH=$PWD/boot_compiler/bin:$PWD/boot_compiler/lib/exe:$PATH
 export PATH=$BOOTCOMPILERPATH
 ./clean-classic/linux-x64/build_htoclean.sh
 ./clean-classic/linux-x64/build_clc.sh
+./clean-classic/linux-x64/build_clc_itasks.sh
 ./clean-classic/linux-x64/build_linker.sh
 ./clean-classic/linux-x64/build_batch_build.sh
 ./clean-classic/linux-x64/build_libraries.sh
@@ -24,6 +25,7 @@ mkdir step0
 mv stdenv step0/
 mv clean-libraries step0/
 mv compiler step0/
+mv compiler_itask step0/
 mv write_clean_manual step0/
 mv htoclean step0/
 mv elf_linker step0/
@@ -31,6 +33,7 @@ mv clean-ide step0/
 mv clean-platform step0/
 ./clean-classic/linux-x64/build_htoclean.sh
 ./clean-classic/linux-x64/build_clc.sh
+./clean-classic/linux-x64/build_clc_itasks.sh
 ./clean-classic/linux-x64/build_linker.sh
 ./clean-classic/linux-x64/build_batch_build.sh
 ./clean-classic/linux-x64/build_libraries.sh
diff --git a/clean-classic/linux-x64/build_clc_itasks.sh b/clean-classic/linux-x64/build_clc_itasks.sh
index e7c989d759b35a741a0adc9d745177f6f0f65e2d..e3c24b7722624fff16adb14bd87d488531d77484 100755
--- a/clean-classic/linux-x64/build_clc_itasks.sh
+++ b/clean-classic/linux-x64/build_clc_itasks.sh
@@ -1,19 +1,9 @@
 set -e
-# ./checkout.sh libraries/ArgEnvUnix
-if test ! -d libraries/ArgEnvUnix ; then
-  ./svn_checkout.sh clean-libraries/trunk/Libraries/ArgEnvUnix libraries/ArgEnvUnix
-fi
-# ./checkout.sh compiler
-./svn_checkout.sh clean-compiler/branches/itask compiler
+(cd git/compiler; git checkout origin/itask -- .)
+mkdir compiler_itask
+mv git/compiler/* compiler_itask/
 
-cd compiler
+cd compiler_itask
 clm -ABC -nw -ci -I backend -I frontend -I main -I main/Unix -IL ArgEnv backendconvert
-cd unix
-sed "s/-h 80M -s 4m/-h 512m -s 16m/" <make.linux64.sh >make.linux64.sh_
-rm -f make.linux64.sh
-mv make.linux64.sh_ make.linux64.sh
-chmod +x make.linux64.sh
-cd ..
 unix/make.linux64.sh
 cd ..
-
diff --git a/clean-classic/linux-x64/build_clean.sh b/clean-classic/linux-x64/build_clean.sh
index e2dd3d32baa743e0b67e0813bc9e8ae6da24761e..697ef1b381c63114f5b02a6237c8a60c5da1c0f3 100755
--- a/clean-classic/linux-x64/build_clean.sh
+++ b/clean-classic/linux-x64/build_clean.sh
@@ -20,6 +20,7 @@ cp clean-ide/cpm/cpm clean/bin
 
 mkdir -p clean/exe
 cp compiler/cocl clean/exe
+cp compiler_itask/cocl clean/exe/cocl_itask
 cp code-generator/cg clean/exe
 cp elf_linker/linker clean/exe
 
diff --git a/clean-classic/linux-x64/cleanup.sh b/clean-classic/linux-x64/cleanup.sh
index cbb5c9919a97205d24b7f99565ca82c99f46adc3..2c94fb83a61b1ce223da64f0410ce92db486d1df 100755
--- a/clean-classic/linux-x64/cleanup.sh
+++ b/clean-classic/linux-x64/cleanup.sh
@@ -4,6 +4,7 @@ rm -rf code-generator
 rm -rf clm
 rm -rf run-time-system
 rm -rf compiler
+rm -rf compiler_itask
 rm -rf clean-libraries
 rm -rf clean-ide
 rm -rf htoclean
diff --git a/clean-classic/linux-x64/txt/Makefile b/clean-classic/linux-x64/txt/Makefile
index 660aec3f08f900538770182e7f65850ed7db48b2..8e1c4a881dca9e53f70398c79b4071cb8d464a7b 100755
--- a/clean-classic/linux-x64/txt/Makefile
+++ b/clean-classic/linux-x64/txt/Makefile
@@ -77,7 +77,7 @@ PATCH_BIN = $(CURRENTDIR)/bin/patch_bin
 # Binaries
 #
 BIN_FILES = clm htoclean
-EXE_FILES = cocl cg linker
+EXE_FILES = cocl cocl_itask cg linker
 
 INSTALL_BIN_FILES = $(BIN_FILES:%=$(INSTALL_BIN_DIR)/%)
 INSTALL_CLM = $(INSTALL_BIN_DIR)/clm