106 lines
2.2 KiB
Bash
Executable file
106 lines
2.2 KiB
Bash
Executable file
#!/bin/bash
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# test for bug in libgl1-mesa-dri
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# https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/259219
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# based Ulrich von Zadow's ldpreload_crash.zip posted there
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# This will:
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# exit 1 if the test failed to compile, or the workaround didnt work after all
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# exit 0 if the test ran successfully
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# if the LD_PRELOAD workaround is needed, echo the pathname of libstc++ on stdout
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curdir=$PWD
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tmpdir=`mktemp -d`
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cd $tmpdir
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cat >ldpreload_main.c <<"EOFldpreload_main"
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#include <dlfcn.h>
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#include <stdio.h>
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#include <stdlib.h>
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int main()
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{
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void *handle = dlopen("./ldpreload_crash.so", RTLD_LOCAL | RTLD_NOW);
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if (!handle) {
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printf("dlopen failed with message '%s'\n", dlerror());
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}
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typedef void (*UseStreamPtr)();
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UseStreamPtr use_stream = (UseStreamPtr)(dlsym(handle, "use_stream"));
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if (use_stream) {
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use_stream();
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} else {
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printf("Function use_stream not found.\n");
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exit (1);
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}
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exit (0);
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}
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EOFldpreload_main
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cat >ldpreload_crash.cpp <<"EOFldpreload_crash"
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#include <iostream>
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#include <GL/gl.h>
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using namespace std;
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extern "C" {
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void use_stream()
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{
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cerr << "[foo]" << endl;
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}
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void use_gl()
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{
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// Make sure gl gets linked in.
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glEnable(GL_BLEND);
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}
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}
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EOFldpreload_crash
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cat >Makefile <<"EOFMakefile"
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SHAREDLIBS = -lGL -lGLU -lstdc++
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all: ldpreload_crash.so ldpreload_main
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ldpreload_crash.so: ldpreload_crash.o
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c++ -fPIC -shared -o $@ $^ -rdynamic $(SHAREDLIBS)
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ldpreload_main: ldpreload_main.o
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gcc -fPIC -o $@ $^ -ldl
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ldpreload_crash.o: %.o: %.cpp
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$(CXX) -fPIC -c $< -o $@
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ldpreload_main.o: %.o: %.c
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gcc -c $< -o $@
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EOFMakefile
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make -s -i
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if [ "$?" -ne "0" ]; then
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exit 1
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fi
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# 'extract' libstdc++ shared lib name - hope this is robust
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libstdcpp=`ldd ldpreload_crash.so |grep stdc++|cut -d' ' -f3`
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./ldpreload_main >/dev/null 2>&1
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if [ "$?" -ne "0" ]; then
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# the workaround is needed
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LD_PRELOAD=$libstdcpp ./ldpreload_main >/dev/null 2>&1
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if [ "$?" -ne "0" ]; then
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exit 1
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fi
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# else echo pathname of the shared library which needs preloading
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echo $libstdcpp
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cd $curdir
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rm -rf $tmpdir
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exit 0
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fi
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# that worked, no workaround needed
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cd $curdir
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rm -rf $tmpdir
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exit 0
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