I have run and passed 'make sanity' and I have download and set ALT_BOOTDIR to a jdk6:
$ echo $ALT_BOOTDIR /home/michael/Programs/jdk1.6.0_30 But when I 'make', i still get error saying 'We cannot execute /NO_BOOTDIR/bin/java' make[2]: Entering directory `/home/michael/src/jdk7/langtools/make' JAVA_HOME=/NO_BOOTDIR ANT_OPTS=-Djava.io.tmpdir='/home/michael/src/jdk7/build/linux-amd64/langtools/build/ant-tmp' ant -Djdk.version=1.7.0 -Dfull.version='1.7.0-internal-michael_2011_12_21_16_53-b00' -Dmilestone=internal -Dbuild.number=b00 -Djavac.target=7 -Djavac.source=7 -Dboot.java.home=/NO_BOOTDIR -Dimport.jdk=/home/michael/src/jdk7/jdk -Dbuild.dir=/home/michael/src/jdk7/build/linux-amd64/langtools/build -Ddist.dir=/home/michael/src/jdk7/build/linux-amd64/langtools/dist build Error: JAVA_HOME is not defined correctly. We cannot execute /NO_BOOTDIR/bin/java make[2]: *** [build] Error 1 ;; This buffer is for notes you don't want to save, and for Lisp evaluation. ;; If you want to create a file, visit that file with C-x C-f, ;; then enter the text in that file's own buffer. $ make sanity ( cd ./jdk/make && \ make sanity HOTSPOT_IMPORT_CHECK=false JDK_TOPDIR=/home/michael/src/jdk7/jdk JDK_MAKE_SHARED_DIR=/home/michael/src/jdk7/jdk/make/common/shared EXTERNALSANITYCONTROL=true SOURCE_LANGUAGE_VERSION=7 TARGET_CLASS_VERSION=7 MILESTONE=internal BUILD_NUMBER=b00 JDK_BUILD_NUMBER=b00 FULL_VERSION=1.7.0-internal-michael_2011_12_21_16_51-b00 PREVIOUS_JDK_VERSION=1.6.0 JDK_VERSION=1.7.0 JDK_MKTG_VERSION=7 JDK_MAJOR_VERSION=1 JDK_MINOR_VERSION=7 JDK_MICRO_VERSION=0 PREVIOUS_MAJOR_VERSION=1 PREVIOUS_MINOR_VERSION=6 PREVIOUS_MICRO_VERSION=0 ARCH_DATA_MODEL=64 COOKED_BUILD_NUMBER=0 ALT_OUTPUTDIR=/home/michael/src/jdk7/build/linux-amd64 ALT_LANGTOOLS_DIST=/home/michael/src/jdk7/build/linux-amd64/langtools/dist ALT_CORBA_DIST=/home/michael/src/jdk7/build/linux-amd64/corba/dist ALT_JAXP_DIST=/home/michael/src/jdk7/build/linux-amd64/jaxp/dist ALT_JAXWS_DIST=/home/michael/src/jdk7/build/linux-amd64/jaxws/dist ALT_HOTSPOT_IMPORT_PATH=/home/michael/src/jdk7/build/linux-amd64/hotspot/import BUILD_HOTSPOT=true ; ) [: 1: Illegal number: /bin/sh: [: 1: Illegal number: /bin/sh: [: 1: Illegal number: /NO_BOOTDIR/bin/java: [: 1: Illegal number: /NO_BOOTDIR/bin/java: [: 1: Illegal number: not [: 1: Illegal number: not [: 1: Illegal number: Error: [: 1: Illegal number: Error: [: 1: Illegal number: JAVA_HOME [: 1: Illegal number: JAVA_HOME [: 1: Illegal number: is [: 1: Illegal number: is make[1]: Entering directory `/home/michael/src/jdk7/jdk/make' make[1]: Leaving directory `/home/michael/src/jdk7/jdk/make' Build Machine Information: build machine = opportunity Build Directory Structure: CWD = /home/michael/src/jdk7 TOPDIR = . LANGTOOLS_TOPDIR = ./langtools JAXP_TOPDIR = ./jaxp JAXWS_TOPDIR = ./jaxws CORBA_TOPDIR = ./corba HOTSPOT_TOPDIR = ./hotspot JDK_TOPDIR = ./jdk Build Directives: BUILD_LANGTOOLS = true BUILD_JAXP = true BUILD_JAXWS = true BUILD_CORBA = true BUILD_HOTSPOT = true BUILD_JDK = true DEBUG_CLASSFILES = DEBUG_BINARIES = Hotspot Settings: HOTSPOT_BUILD_JOBS = HOTSPOT_OUTPUTDIR = /home/michael/src/jdk7/build/linux-amd64/hotspot/outputdir HOTSPOT_EXPORT_PATH = /home/michael/src/jdk7/build/linux-amd64/hotspot/import Bootstrap Settings: BOOTDIR = /NO_BOOTDIR ALT_BOOTDIR = BOOT_VER = /bin/sh: /NO_BOOTDIR/bin/java: not found [requires at least 1.6] OUTPUTDIR = /home/michael/src/jdk7/build/linux-amd64 ALT_OUTPUTDIR = /home/michael/src/jdk7/build/linux-amd64 ABS_OUTPUTDIR = /home/michael/src/jdk7/build/linux-amd64 Build Tool Settings: SLASH_JAVA = /NOT-SET ALT_SLASH_JAVA = VARIANT = OPT JDK_DEVTOOLS_DIR = /NOT-SET/devtools ALT_JDK_DEVTOOLS_DIR = ANT_HOME = UNIXCOMMAND_PATH = /bin/ ALT_UNIXCOMMAND_PATH = COMPILER_PATH = /usr/bin/ ALT_COMPILER_PATH = DEVTOOLS_PATH = /usr/bin/ ALT_DEVTOOLS_PATH = UNIXCCS_PATH = /usr/ccs/bin/ ALT_UNIXCCS_PATH = USRBIN_PATH = /usr/bin/ ALT_USRBIN_PATH = COMPILER_NAME = GCC4 COMPILER_VERSION = GCC4 CC_VER = 4.6.1 [requires at least 4.3.0] ZIP_VER = 3.0 [requires at least 2.2] UNZIP_VER = 6.00 [requires at least 5.12] ANT_VER = Error: JAVA_HOME is not defined correctly. We cannot execute /NO_BOOTDIR/bin/java [requires at least 1.7.1] TEMPDIR = /home/michael/src/jdk7/build/linux-amd64/tmp Build Directives: OPENJDK = true USE_HOTSPOT_INTERPRETER_MODE = PEDANTIC = DEV_ONLY = NO_DOCS = NO_IMAGES = TOOLS_ONLY = INSANE = COMPILE_APPROACH = parallel PARALLEL_COMPILE_JOBS = 2 ALT_PARALLEL_COMPILE_JOBS = FASTDEBUG = COMPILER_WARNINGS_FATAL = false COMPILER_WARNING_LEVEL = SHOW_ALL_WARNINGS = INCREMENTAL_BUILD = false CC_HIGHEST_OPT = CC_HIGHER_OPT = CC_LOWER_OPT = CXXFLAGS = -O2 -fPIC -DCC_NOEX -W -Wall -Wno-unused -Wno-parentheses -fno-omit-frame-pointer -D_LITTLE_ENDIAN CFLAGS = -O2 -fno-strict-aliasing -fPIC -W -Wall -Wno-unused -Wno-parentheses -pipe -fno-omit-frame-pointer -D_LITTLE_ENDIAN BOOT_JAVA_CMD = /NO_BOOTDIR/bin/java -XX:-PrintVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-LogVMOutput -Xmx512m -Xms512m -XX:PermSize=32m -XX:MaxPermSize=160m BOOT_JAVAC_CMD = /NO_BOOTDIR/bin/javac -J-XX:ThreadStackSize=1536 -J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-Xmx512m -J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -encoding ascii -source 6 -target 6 -XDignore.symbol.file=true BOOT_JAR_CMD = /NO_BOOTDIR/bin/jar BOOT_JARSIGNER_CMD = /NO_BOOTDIR/bin/jarsigner JAVAC_CMD = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-amd64/bin/javac -J-XX:ThreadStackSize=1536 -J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-Xmx512m -J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -source 7 -target 7 -encoding ascii -Xbootclasspath:/home/michael/src/jdk7/build/linux-amd64/classes JAVAH_CMD = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-amd64/bin/javah -bootclasspath /home/michael/src/jdk7/build/linux-amd64/classes JAVADOC_CMD = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-amd64/bin/javadoc -J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-Xmx512m -J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -bootclasspath /home/michael/src/jdk7/build/linux-amd64/classes Build Platform Settings: USER = michael PLATFORM = linux ARCH = amd64 LIBARCH = amd64 ARCH_FAMILY = amd64 ARCH_DATA_MODEL = 64 ARCHPROP = amd64 ALSA_VERSION = 1.0.24.1 OS_VERSION = 3.0.0-14-generic [requires at least 2.6] OS_VARIANT_NAME = Ubuntu OS_VARIANT_VERSION = 11.10 MB_OF_MEMORY = 7984 GNU Make Settings: MAKE = make MAKE_VER = 3.81 [requires at least 3.81] MAKECMDGOALS = sanity MAKEFLAGS = w SHELL = /bin/sh Target Build Versions: JDK_VERSION = 1.7.0 MILESTONE = internal RELEASE = 1.7.0-internal FULL_VERSION = 1.7.0-internal-michael_2011_12_21_16_51-b00 BUILD_NUMBER = b00 External File/Binary Locations: USRJDKINSTANCES_PATH = /opt/java BUILD_JDK_IMPORT_PATH = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries ALT_BUILD_JDK_IMPORT_PATH = JDK_IMPORT_PATH = /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-amd64 ALT_JDK_IMPORT_PATH = LANGTOOLS_DIST = ALT_LANGTOOLS_DIST = /home/michael/src/jdk7/build/linux-amd64/langtools/dist CORBA_DIST = ALT_CORBA_DIST = /home/michael/src/jdk7/build/linux-amd64/corba/dist JAXP_DIST = ALT_JAXP_DIST = /home/michael/src/jdk7/build/linux-amd64/jaxp/dist JAXWS_DIST = ALT_JAXWS_DIST = /home/michael/src/jdk7/build/linux-amd64/jaxws/dist HOTSPOT_DOCS_IMPORT_PATH = /NO_DOCS_DIR ALT_HOTSPOT_DOCS_IMPORT_PATH = HOTSPOT_IMPORT_PATH = /home/michael/src/jdk7/build/linux-amd64/hotspot/import ALT_HOTSPOT_IMPORT_PATH = /home/michael/src/jdk7/build/linux-amd64/hotspot/import HOTSPOT_SERVER_PATH = /home/michael/src/jdk7/build/linux-amd64/hotspot/import/jre/lib/amd64/server ALT_HOTSPOT_SERVER_PATH = CACERTS_FILE = ./../src/share/lib/security/cacerts ALT_CACERTS_FILE = CUPS_HEADERS_PATH = /usr/include ALT_CUPS_HEADERS_PATH = OpenJDK-specific settings: FREETYPE_HEADERS_PATH = /usr/include ALT_FREETYPE_HEADERS_PATH = FREETYPE_LIB_PATH = /usr/lib ALT_FREETYPE_LIB_PATH = Previous JDK Settings: PREVIOUS_RELEASE_PATH = ALT_PREVIOUS_RELEASE_PATH = PREVIOUS_JDK_VERSION = 1.6.0 ALT_PREVIOUS_JDK_VERSION = PREVIOUS_JDK_FILE = ALT_PREVIOUS_JDK_FILE = PREVIOUS_JRE_FILE = ALT_PREVIOUS_JRE_FILE = PREVIOUS_RELEASE_IMAGE = ALT_PREVIOUS_RELEASE_IMAGE = Sanity check passed. michael@opportunity:~/src/jdk7$