ruby-runner

* template/ruby-runner.c.in: wrapper to set dynamic loading path
  environment variable.  /bin/sh on Mac OS X 10.11 (El Capitan)
  clears DYLD_LIBRARY_PATH.
  it must:
  - do nothing even if current directory is not present
  - do not set other environment variables, e.g. PWD, SHLVL, etc
  - do not open other FDs, e.g. pipes for timer thread

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52008 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,14 @@
+Sun Oct  4 00:09:45 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* template/ruby-runner.c.in: wrapper to set dynamic loading path
+	  environment variable.  /bin/sh on Mac OS X 10.11 (El Capitan)
+	  clears DYLD_LIBRARY_PATH.
+
+	  it must:
+	  - do nothing even if current directory is not present
+	  - do not set other environment variables, e.g. PWD, SHLVL, etc
+	  - do not open other FDs, e.g. pipes for timer thread
+
 Fri Oct  2 09:20:20 2015  Martin Duerst  <duerst@it.aoyama.ac.jp>
 
 	* common.mk, lib/unicode_normalize/tables.rb: Change Unicode

Makefile.in

@@ -147,7 +147,7 @@ DTRACE_DEPENDENT_OBJS = array.$(OBJEXT) \
 
 THREAD_MODEL  = @THREAD_MODEL@
 
-PREP          = @PREP@
+PREP          = @PREP@ ruby-runner
 ARCHFILE      = @ARCHFILE@
 SETUP         =
 EXTSTATIC     = @EXTSTATIC@
@@ -252,6 +252,12 @@ ruby_pc = @ruby_pc@
 $(ruby_pc):
 		@./config.status --file=$@:$(srcdir)/template/ruby.pc.in
 
+ruby-runner.c: template/ruby-runner.c.in
+		@./config.status --file=$@:$(srcdir)/template/$(@F).in
+
+ruby-runner$(EXEEXT): ruby-runner.c
+	$(Q) $(PURIFY) $(CC) $(LDFLAGS) $(LIBS) $(OUTFLAG)$@ ruby-runner.c
+
 $(RBCONFIG): $($(CROSS_COMPILING:no=)PREP)
 
 rbconfig.rb: $(RBCONFIG)

template/ruby-runner.c.in

@@ -0,0 +1,27 @@
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define BUILDDIR "@abs_top_builddir@"
+#define LIBPATHENV "@LIBPATHENV@"
+
+int
+main(int argc, char **argv)
+{
+    static const char builddir[] = BUILDDIR;
+    const char *libpath = getenv(LIBPATHENV);
+    if (libpath) {
+	size_t n = strlen(libpath);
+	char *e = malloc(sizeof(builddir)+n+1);
+	memcpy(e, builddir, sizeof(builddir)-1);
+	e[sizeof(builddir)-1] = '@PATH_SEPARATOR@';
+	memcpy(e+sizeof(builddir), libpath, n+1);
+	libpath = e;
+    }
+    else {
+	libpath = builddir;
+    }
+    setenv(LIBPATHENV, libpath, 1);
+    execv(BUILDDIR"/@RUBY_BASE_NAME@", argv);
+    return -1;
+}

tool/runruby.rb

@@ -66,7 +66,7 @@ config["bindir"] = abs_archdir
 
 env = {}
 
-env["RUBY"] = File.expand_path(ruby)
+env["RUBY"] = File.join(abs_archdir, "ruby-runner#{config['EXEEXT']}")
 env["PATH"] = [abs_archdir, ENV["PATH"]].compact.join(File::PATH_SEPARATOR)
 
 if e = ENV["RUBYLIB"]