The problem was caused by the existence of ...\jdk\src\share\classes\javax\swing\JLabel - Copy.java. (This is Windows' scheme for copies.)
-------- Original Message -------- Subject: unable to build JLabel Date: Thu, 02 Feb 2012 10:27:58 -0600 From: Pete Brunet <peter.bru...@oracle.com> Reply-To: peter.bru...@oracle.com To: build-dev <build-dev@openjdk.java.net> After editing JLabel.java, deleting my build directory, and starting a full build I am getting make[5]: Entering directory `/cygdrive/c/OpenJDK/jdk8/jdk/make/javax/swing' <snip - six sets of mkdir, rm, cp> make[5]: *** No rule to make target `javax/swing/JLabel', needed by `C:/OpenJDK/jdk8/build/windows-i586/../windows-i586-fastdebug/tmp/com/javax.swing/.classes.list'. Stop. My build process was: // These are done in a bat file before I do any makes set ALT_BOOTDIR=C:/Progra~1/Java/jdk1.7.0_02 set ALT_FREETYPE_HEADERS_PATH=C:/Users/Pete/freetype-2.4.8/include set ALT_FREETYPE_LIB_PATH=C:/Users/Pete/freetype-2.4.8/objs/win32/vc2010 set ANT_HOME=C:/Progra~2/apache-ant-1.7.1 set ALT_MSDEVTOOLS_PATH=C:/Progra~2/MICROS~1/Windows/v7.0A/bin set CLASSPATH= set PATH=C:/WINDOWS/system32;C:/WINDOWS;C:/WINDOWS/System32/Wbem; set CYGWIN=nodosfilewarning cd c:\Users\Pete\cygwin\bin bash --login -i // These are done at the cygwin command line eval `bin/vsvars.sh -v10 -32` cd /cygdrive/c/OpenJDK/jdk8 make ARCH_DATA_MODEL=32 ALLOW_DOWNLOADS=true NO_DOCS=true fastdebug_build 2>&1 | tee build.log