Thanks, that's exactly what I was looking for. -wade On Wed, Oct 11, 2017 at 3:21 AM, Erik Joelsson <[email protected]> wrote:
> Hello, > > I believe Wade is rather asking about the resulting javac binary that the > build produces. If that's the case, you need to edit > jdk/make/launcher/Launcher-jdk.compiler.gmk and add your desired flags to > the JAVA_ARGS argument to SetupBuildLauncher for javac. Example: > > $(eval $(call SetupBuildLauncher, javac, \ > MAIN_CLASS := com.sun.tools.javac.Main, \ > JAVA_ARGS := --add-modules ALL-DEFAULT -Xms512m, \ > CFLAGS := -DEXPAND_CLASSPATH_WILDCARDS, \ > )) > > (I have not tested this, but it should work) > > /Erik > > On 2017-10-11 01:44, David Holmes wrote: > >> Hi Wade, >> >> On 11/10/2017 9:01 AM, Wade Hennessey wrote: >> >>> The default initial heap size in OpenJDK9 is 8m (-Xms8m), and I'd like to >>> increase it, but I can't find how this is specified in the build process. >>> It seams that most/all java binaries are based on the same main.c program >>> that launches a specific binary such as javac by passing it parameters >>> through some sort of "Launcher" that specifes the command line options. >>> Unfortunately I don't understand how this is specified when javac is >>> linked. -wade >>> >> >> javac compilations are mainly controlled through >> >> - make/common/SetupJavaCompilers.gmk >> >> but also see: >> >> - make/common/JavaCompilation.gmk >> - make/CompileJavaModules.gmk >> >> You can either adjust the flags you pass into the calls (from various >> makefiles) defined in SetupJavaCompilers or you can edit the FLAGS >> definitions in there directly e.g. to add -J-Xms16m >> >> Also look at the definition for JAVA_TOOL_FLAGS_SMALL. >> >> PS. The above are for new JDK 10 repo layout. For 9 it is probably in >> jdk/make. >> >> HTH >> >> David >> >> >
