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#define _POSIX_C_SOURCE 200809L
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define BUILDDIR "@abs_top_builddir@"
#define LIBPATHENV "@LIBPATHENV@"
#define PATH_SEP '@PATH_SEPARATOR@'
#define STRINGIZE(expr) STRINGIZE0(expr)
#define STRINGIZE0(expr) #expr
int
main(int argc, char **argv)
{
static const char builddir[] = BUILDDIR;
const char *libpath = getenv(LIBPATHENV);
if (libpath) {
while (*libpath == PATH_SEP) ++libpath;
}
if (libpath && *libpath) {
size_t n = strlen(libpath);
char *e = malloc(sizeof(builddir)+n+1);
memcpy(e, builddir, sizeof(builddir)-1);
e[sizeof(builddir)-1] = PATH_SEP;
memcpy(e+sizeof(builddir), libpath, n+1);
libpath = e;
}
else {
libpath = builddir;
}
setenv(LIBPATHENV, libpath, 1);
execv(BUILDDIR"/"STRINGIZE(RUBY_INSTALL_NAME), argv);
return -1;
}
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