CNI and interface methods

Fri Apr 3 14:13:00 GMT 2009

Stephen Kell wrote:
> On 2009年4月03日 09:37:40 +0100, Andrew Haley wrote:
>> It's because you're using -Bsymbolic but not -fpic. -Bsymbolic is
>> dangerous, and any use of it without PIC means instant death. So,
>> compile everything PIC, even the executable, and you'll be fine.
>> That worked for me on your example.
>> Thanks for this. I thought I already was compiling everything -fpic,
> but maybe I missed something. Was there a particular make rule that was
> in need of -fpic, that you altered? I still can't find it.
>> (Actually I was using -fPIC, but I've tried again with -fpic instead, in
> case it made a difference... still getting the same segfault though.)

Here are my changes. I also got rid of antlr-runtime which didn't seem
necessary.
Andrew.

--- Makefile~ 2009年04月02日 19:31:29.000000000 +0100
+++ Makefile 2009年04月03日 09:31:06.000000000 +0100
@@ -16,13 +16,13 @@
 default: cake
 %.o: %.cpp
- g++ -c -o "$@" ${CXXFLAGS} "$<"
+ g++ -c -fpic -o "$@" ${CXXFLAGS} "$<"
 main.o: main.cpp parser-recursive Makefile antlr-headers
- g++ -c -o "$@" ${CXXFLAGS} "$<"
+ g++ -c -fpic -o "$@" ${CXXFLAGS} "$<"
-cake: main.o $(OBJS) antlr-runtime-3.1.jar.so stringtemplate-3.2.jar.so antlr-3.1.2.jar.so junit-3.8.2.jar.so
- gcj $(GCJFLAGS) -Wl,-R. -o "$@" $(OBJS) "$<" -lstdc++ parser/cakeJava{Parser,Lexer}*.o antlr-runtime-3.1.jar.so stringtemplate-3.2.jar.so antlr-3.1.2.jar.so junit-3.8.2.jar.so
+cake: main.o $(OBJS) stringtemplate-3.2.jar.so antlr-3.1.2.jar.so junit-3.8.2.jar.so
+ gcj $(GCJFLAGS) -Wl,-R. -o "$@" $(OBJS) "$<" -lstdc++ parser/cakeJava{Parser,Lexer}*.o stringtemplate-3.2.jar.so antlr-3.1.2.jar.so junit-3.8.2.jar.so
 # FIXME: to build, change the following .jar paths
@@ -41,14 +41,14 @@
 org.antlr.runtime.IntStream
 %.jar.so: %.jar
- gcj $(GCJFLAGS) -shared -fPIC -Wl,-Bsymbolic "$<" -o "$@"
+ gcj $(GCJFLAGS) -shared -g -fPIC -Wl,-Bsymbolic "$<" -o "$@"
 #java-headers:
 # gcjh -d gcjh_generated -classpath .:$(CLASSPATH) java.io.File java.io.FileInputStream
 .PHONY: parser-recursive
 parser-recursive:
- $(MAKE) -C parser
+ $(MAKE) -C parser CLASSPATH=$(CLASSPATH)
 .PHONY: clean
 clean:
--- parser/Makefile~ 2009年04月02日 19:32:24.000000000 +0100
+++ parser/Makefile 2009年04月03日 09:31:06.000000000 +0100
@@ -33,14 +33,14 @@
 $(ANTLR) "$<"
 %.class: %.java
- gcj -MD -C -Wno-unused "$<"
+ gcj -g -MD -C -Wno-unused "$<"
 %.o: %.class
- gcj $(JFLAGS) -MD -Wno-unused -c -o "$@" "$<"
+ gcj $(JFLAGS) -MD -Wno-unused -c -o "$@" "$<" -g -fpic
 # HACK: also make nested classes' object files, because we can't enumerate these statically for Makefile purposes
 for classfile in "$*"\$$*.class; do \
 if [[ $$classfile != "$*"\$$"*".class ]]; then \
- gcj -o $$( echo "$$classfile" | sed 's/class$$/o/') -MD -Wno-unused -c "$$classfile"; \
+ gcj -o $$( echo "$$classfile" | sed 's/class$$/o/') -MD -Wno-unused -fpic -c "$$classfile"; \
 fi; \
 done
