tools: Add a common helper to get the argv0 directory.

tools/tools.h

@@ -30,6 +30,9 @@
 #include <fcntl.h>
 #include <time.h>
 #include <errno.h>
+#ifdef HAVE_SYS_SYSCTL_H
+# include <sys/sysctl.h>
+#endif
 
 #ifdef _WIN32
 # include <direct.h>
@@ -603,6 +606,29 @@ static inline struct target init_argv0_target( const char *argv0 )
 }
 
 
+static inline char *get_argv0_dir( const char *argv0 )
+{
+#ifndef _WIN32
+    char *dir = NULL;
+
+#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
+    dir = realpath( "/proc/self/exe", NULL );
+#elif defined (__FreeBSD__) || defined(__DragonFly__)
+    static int pathname[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
+    size_t path_size = PATH_MAX;
+    char *path = xmalloc( path_size );
+    if (!sysctl( pathname, ARRAY_SIZE(pathname), path, &path_size, NULL, 0 ))
+        dir = realpath( path, NULL );
+    free( path );
+#endif
+    if (!dir && !(dir = realpath( argv0, NULL ))) return NULL;
+    return get_dirname( dir );
+#else
+    return get_dirname( argv0 );
+#endif
+}
+
+
 /* output buffer management */
 
 extern unsigned char *output_buffer;

tools/widl/widl.c

@@ -31,9 +31,6 @@
 #include <signal.h>
 #include <limits.h>
 #include <sys/types.h>
-#ifdef HAVE_SYS_SYSCTL_H
-# include <sys/sysctl.h>
-#endif
 
 #include "widl.h"
 #include "utils.h"
@@ -482,23 +479,11 @@ void write_id_data(const statement_list_t *stmts)
 
 static void init_argv0_dir( const char *argv0 )
 {
-#ifndef _WIN32
-    char *dir = NULL;
-
-#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
-    dir = realpath( "/proc/self/exe", NULL );
-#elif defined (__FreeBSD__) || defined(__DragonFly__)
-    static int pathname[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
-    size_t path_size = PATH_MAX;
-    char *path = xmalloc( path_size );
-    if (!sysctl( pathname, ARRAY_SIZE(pathname), path, &path_size, NULL, 0 ))
-        dir = realpath( path, NULL );
-    free( path );
-#endif
-    if (!dir && !(dir = realpath( argv0, NULL ))) return;
-    includedir = strmake( "%s/%s", get_dirname( dir ), BIN_TO_INCLUDEDIR );
-    dlldir = strmake( "%s/%s", get_dirname( dir ), BIN_TO_DLLDIR );
-#endif
+    char *dir = get_argv0_dir( argv0 );
+
+    if (!dir) return;
+    includedir = strmake( "%s/%s", dir, BIN_TO_INCLUDEDIR );
+    dlldir = strmake( "%s/%s", dir, BIN_TO_DLLDIR );
 }
 
 static void option_callback( int optc, char *optarg )

tools/winegcc/winegcc.c

@@ -98,9 +98,6 @@
 #include <ctype.h>
 #include <limits.h>
 #include <sys/types.h>
-#ifdef HAVE_SYS_SYSCTL_H
-# include <sys/sysctl.h>
-#endif
 
 #include "utils.h"
 
@@ -646,24 +643,9 @@ static char *get_lib_dir( struct options *opts )
 
 static void init_argv0_dir( const char *argv0 )
 {
-#ifndef _WIN32
-    char *dir = NULL;
-
-#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
-    dir = realpath( "/proc/self/exe", NULL );
-#elif defined (__FreeBSD__) || defined(__DragonFly__)
-    static int pathname[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
-    size_t path_size = PATH_MAX;
-    char *path = xmalloc( path_size );
-    if (!sysctl( pathname, ARRAY_SIZE(pathname), path, &path_size, NULL, 0 ))
-        dir = realpath( path, NULL );
-    free( path );
-#endif
-    if (!dir && !(dir = realpath( argv0, NULL ))) return;
-    bindir = get_dirname( dir );
+    if (!(bindir = get_argv0_dir( argv0 ))) return;
     includedir = strmake( "%s/%s", bindir, BIN_TO_INCLUDEDIR );
     libdir = strmake( "%s/%s", bindir, BIN_TO_LIBDIR );
-#endif
 }
 
 static void compile(struct options* opts, const char* lang)

tools/wmc/wmc.c

@@ -26,9 +26,6 @@
 #include <signal.h>
 #include <limits.h>
 #include <sys/types.h>
-#ifdef HAVE_SYS_SYSCTL_H
-# include <sys/sysctl.h>
-#endif
 
 #include "wmc.h"
 #include "utils.h"
@@ -149,24 +146,11 @@ static void exit_on_signal( int sig )
 
 static void init_argv0_dir( const char *argv0 )
 {
-#ifndef _WIN32
-    char *dir = NULL;
-
-#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
-    dir = realpath( "/proc/self/exe", NULL );
-#elif defined (__FreeBSD__) || defined(__DragonFly__)
-    static int pathname[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
-    size_t path_size = PATH_MAX;
-    char *path = xmalloc( path_size );
-    if (!sysctl( pathname, ARRAY_SIZE(pathname), path, &path_size, NULL, 0 ))
-        dir = realpath( path, NULL );
-    free( path );
-#endif
-    if (!dir && !(dir = realpath( argv0, NULL ))) return;
-    dir = get_dirname( dir );
+    char *dir = get_argv0_dir( argv0 );
+
+    if (!dir) return;
     if (strendswith( dir, "/tools/wmc" )) nlsdirs[0] = strmake( "%s/../../nls", dir );
     else nlsdirs[0] = strmake( "%s/%s", dir, BIN_TO_NLSDIR );
-#endif
 }
 
 static void option_callback( int optc, char *optarg )

tools/wrc/wrc.c

@@ -29,9 +29,6 @@
 #include <signal.h>
 #include <limits.h>
 #include <sys/types.h>
-#ifdef HAVE_SYS_SYSCTL_H
-# include <sys/sysctl.h>
-#endif
 
 #include "../tools.h"
 #include "wrc.h"
@@ -294,25 +291,12 @@ static int load_file( const char *input_name, const char *output_name )
 
 static void init_argv0_dir( const char *argv0 )
 {
-#ifndef _WIN32
-    char *dir = NULL;
-
-#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__NetBSD__)
-    dir = realpath( "/proc/self/exe", NULL );
-#elif defined (__FreeBSD__) || defined(__DragonFly__)
-    static int pathname[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, -1 };
-    size_t path_size = PATH_MAX;
-    char *path = xmalloc( path_size );
-    if (!sysctl( pathname, ARRAY_SIZE(pathname), path, &path_size, NULL, 0 ))
-        dir = realpath( path, NULL );
-    free( path );
-#endif
-    if (!dir && !(dir = realpath( argv0, NULL ))) return;
-    dir = get_dirname( dir );
+    char *dir = get_argv0_dir( argv0 );
+
+    if (!dir) return;
     includedir = strmake( "%s/%s", dir, BIN_TO_INCLUDEDIR );
     if (strendswith( dir, "/tools/wrc" )) nlsdirs[0] = strmake( "%s/../../nls", dir );
     else nlsdirs[0] = strmake( "%s/%s", dir, BIN_TO_NLSDIR );
-#endif
 }
 
 static void option_callback( int optc, char *optarg )