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