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winebuild: Search for the as/ld/nm tools in the PATH under various names.

This commit is contained in:
Alexandre Julliard 2009-02-04 19:37:13 +01:00
parent 0e954b14eb
commit dca163290d
1 changed files with 59 additions and 3 deletions
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62
tools/winebuild/utils.c
View File

@ -193,6 +193,59 @@ int output( const char *format, ... )
return ret;
}
/* find a build tool in the path, trying the various names */
char *find_tool( const char * const *names )
{
static char **dirs;
static unsigned int count, maxlen;
char *p, *file;
unsigned int i, len;
struct stat st;
if (!dirs)
{
char *path;
/* split the path in directories */
if (!getenv( "PATH" )) return NULL;
path = xstrdup( getenv( "PATH" ));
for (p = path, count = 2; *p; p++) if (*p == ':') count++;
dirs = xmalloc( count * sizeof(*dirs) );
count = 0;
dirs[count++] = p = path;
while (*p)
{
while (*p && *p != ':') p++;
if (!*p) break;
*p++ = 0;
dirs[count++] = p;
}
for (i = 0; i < count; i++) maxlen = max( maxlen, strlen(dirs[i])+2 );
}
while (*names)
{
len = strlen(*names) + 1;
file = xmalloc( maxlen + len );
for (i = 0; i < count; i++)
{
strcpy( file, dirs[i] );
p = file + strlen(file);
if (p == file) *p++ = '.';
if (p[-1] != '/') *p++ = '/';
strcpy( p, *names );
if (!stat( file, &st ) && S_ISREG(st.st_mode) && (st.st_mode & 0111)) return file;
}
free( file );
names++;
}
return NULL;
}
const char *get_as_command(void)
{
if (!as_command)
@ -205,7 +258,8 @@ const char *get_as_command(void)
}
else
{
as_command = xstrdup( "as" );
static const char * const commands[] = { "gas", "as", NULL };
if (!(as_command = find_tool( commands ))) as_command = xstrdup("as");
}
if (force_pointer_size)
@ -230,7 +284,8 @@ const char *get_ld_command(void)
}
else
{
ld_command = xstrdup( "ld" );
static const char * const commands[] = { "ld", "gld", NULL };
if (!(ld_command = find_tool( commands ))) ld_command = xstrdup("ld");
}
if (force_pointer_size)
@ -255,7 +310,8 @@ const char *get_nm_command(void)
}
else
{
nm_command = xstrdup( "nm" );
static const char * const commands[] = { "nm", "gnm", NULL };
if (!(nm_command = find_tool( commands ))) nm_command = xstrdup("nm");
}
}
return nm_command;