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From a4a0440a644c6c5e5da096efe3cf05ba309a284f Mon Sep 17 00:00:00 2001
From: "NODA, Kai" <nodakai@gmail.com>
Date: Sun, 22 Apr 2012 17:01:02 +0900
Subject: [PATCH] Use /proc/self/exe for "swig -swiglib" on non-Win32
platforms.
If it wasn't found, then fall back to a fixed string just as before.
Upstream-Status: Submitted
http://sourceforge.net/mailarchive/message.php?msg_id=29179733
---
Source/Modules/main.cxx | 24 ++++++++++++++++++++++--
1 file changed, 22 insertions(+), 2 deletions(-)
--- a/Source/Modules/main.cxx
+++ b/Source/Modules/main.cxx
@@ -25,6 +25,11 @@
#include <ctype.h>
#include <errno.h>
#include <limits.h> // for INT_MAX
+#ifndef _WIN32
+#include <cstddef>
+#include <unistd.h> // for readlink
+#include <sys/stat.h> // for stat
+#endif
// Global variables
@@ -934,9 +939,9 @@ int SWIG_main(int argc, char *argv[], co
// Check for SWIG_LIB environment variable
if ((c = getenv("SWIG_LIB")) == (char *) 0) {
+ char *p;
#if defined(_WIN32)
char buf[MAX_PATH];
- char *p;
if (!(GetModuleFileName(0, buf, MAX_PATH) == 0 || (p = strrchr(buf, '\\')) == 0)) {
*(p + 1) = '\0';
SwigLib = NewStringf("%sLib", buf); // Native windows installation path
@@ -946,7 +951,22 @@ int SWIG_main(int argc, char *argv[], co
if (Len(SWIG_LIB_WIN_UNIX) > 0)
SwigLibWinUnix = NewString(SWIG_LIB_WIN_UNIX); // Unix installation path using a drive letter (for msys/mingw)
#else
- SwigLib = NewString(SWIG_LIB);
+ char buf[PATH_MAX];
+ if (0 < ::readlink("/proc/self/exe", buf, sizeof(buf)) &&
+ (p = ::strstr(buf, "/bin/swig"))) {
+ int major, minor, patch;
+ const int ret = ::sscanf(VERSION, "%d.%d.%d", &major, &minor, &patch);
+ if (3 == ret) {
+ const ::ptrdiff_t dir_part_len = p - buf;
+ ::snprintf(p, PATH_MAX - dir_part_len, "/share/swig/%d.%d.%d", major, minor, patch);
+ struct ::stat stat_res;
+ if (0 == ::stat(buf, &stat_res) && S_ISDIR(stat_res.st_mode)) {
+ SwigLib = NewString(buf);
+ }
+ }
+ }
+ if (NULL == SwigLib)
+ SwigLib = NewString(SWIG_LIB);
#endif
} else {
SwigLib = NewString(c);
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