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I currently need patchelf to add a dependency to an elf file (in the jarify project if it's of any use). It seems to fail, here is a minimal repro.
I am building a simple C file compiled with -fPIE/-fpie and calling the following commands
$patchelf --remove-needed libpthread.so.0 thread
$ldd thread
Inconsistency detected by ld.so: dl-version.c: 224: _dl_check_map_versions: Assertion `needed != NULL' failed!
$patchelf --add-needed libpthread.so.0 thread
stat: No such file or director
The Makefile used here is:
CC=gcc
CFLAGS=-fPIE
LDFLAGS=-lpthread -fpie
OBJECTS=thread.o
hello: $(OBJECTS)
$(CC) $(CFLAGS) $(OBJECTS) -o thread $(LDFLAGS)
all:hello
.PHONY: clean
clean:
rm -f *~ *.o threadThe c source file thread.c, (simply the wikipedia example of pthread in order to get a dynamic dependency)
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#define NUM_THREADS 5
void* perform_work( void* argument )
{
int passed_in_value;
passed_in_value = *( ( int* )argument );
printf( "Hello World! It's me, thread with argument %d!\n", passed_in_value );
/* optionally: insert more useful stuff here */
return NULL;
}
int main( int argc, char** argv )
{
pthread_t threads[ NUM_THREADS ];
int thread_args[ NUM_THREADS ];
int result_code;
unsigned index;
// create all threads one by one
for( index = 0; index < NUM_THREADS; ++index )
{
thread_args[ index ] = index;
printf("In main: creating thread %d\n", index);
result_code = pthread_create( &threads[index], NULL, perform_work, &thread_args[index] );
assert( !result_code );
}
// wait for each thread to complete
for( index = 0; index < NUM_THREADS; ++index )
{
// block until thread 'index' completes
result_code = pthread_join( threads[ index ], NULL );
assert( !result_code );
printf( "In main: thread %d has completed\n", index );
}
printf( "In main: All threads completed successfully\n" );
exit( EXIT_SUCCESS );
}cc @mboes
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