Am 19.06.2013 14:10, schrieb Jakub Jelinek:
> On Wed, Jun 19, 2013 at 02:03:34PM +0200, Matthias Klose wrote:
>> Am 27.11.2012 19:14, schrieb Meador Inge:
>>> On 11/26/2012 09:05 AM, Richard Biener wrote:
>>>
>>>> On Wed, Nov 7, 2012 at 10:51 PM, Meador Inge <[email protected]>
>>>> wrote:
>>>>> Ping ^ 4.
>>>>
>>>> Ok.
>>>
>>> Thanks for the review. Committed to trunk.
>>
>> This did break gcc-ar and gcc-nm; now a regression on the 4.8 branch.
>>
>> $ gcc-ar-4.8 -h
>> gcc-ar-4.8: Cannot find plugin 'liblto_plugin.so'
>>
>> the plugin is *not* installed with x permission flags (which seems to be the
>> standard for shared libraries). You did change the code to use find_a_file
>> which searches only for files with the x bit set.
>
> That actually is the standard for shared libraries, the linker creates
> libraries with those permissions and libtool/automake installs them that way
> too. So if you override this, you need to cope with that decision.
well, I did fix this assumption last year in gcc.c, then lets fix it in other
places too, just adding a mode parameter to the public find_a_file function.
Testing the attached patch.
Matthias
Index: gcc-ar.c
===================================================================
--- gcc-ar.c (revision 200203)
+++ gcc-ar.c (working copy)
@@ -136,7 +136,7 @@
setup_prefixes (av[0]);
/* Find the GCC LTO plugin */
- plugin = find_a_file (&target_path, LTOPLUGINSONAME);
+ plugin = find_a_file (&target_path, LTOPLUGINSONAME, R_OK);
if (!plugin)
{
fprintf (stderr, "%s: Cannot find plugin '%s'\n", av[0],
LTOPLUGINSONAME);
@@ -151,7 +151,7 @@
const char *cross_exe_name;
cross_exe_name = concat (target_machine, "-", PERSONALITY, NULL);
- exe_name = find_a_file (&path, cross_exe_name);
+ exe_name = find_a_file (&path, cross_exe_name, X_OK);
if (!exe_name)
{
fprintf (stderr, "%s: Cannot find binary '%s'\n", av[0],
Index: file-find.c
===================================================================
--- file-find.c (revision 200203)
+++ file-find.c (working copy)
@@ -31,7 +31,7 @@
}
char *
-find_a_file (struct path_prefix *pprefix, const char *name)
+find_a_file (struct path_prefix *pprefix, const char *name, int mode)
{
char *temp;
struct prefix_list *pl;
@@ -50,7 +50,7 @@
if (IS_ABSOLUTE_PATH (name))
{
- if (access (name, X_OK) == 0)
+ if (access (name, mode) == 0)
{
strcpy (temp, name);
@@ -66,7 +66,7 @@
strcpy (temp, name);
strcat (temp, HOST_EXECUTABLE_SUFFIX);
- if (access (temp, X_OK) == 0)
+ if (access (temp, mode) == 0)
return temp;
#endif
@@ -83,7 +83,7 @@
if (stat (temp, &st) >= 0
&& ! S_ISDIR (st.st_mode)
- && access (temp, X_OK) == 0)
+ && access (temp, mode) == 0)
return temp;
#ifdef HOST_EXECUTABLE_SUFFIX
@@ -93,7 +93,7 @@
if (stat (temp, &st) >= 0
&& ! S_ISDIR (st.st_mode)
- && access (temp, X_OK) == 0)
+ && access (temp, mode) == 0)
return temp;
#endif
}
Index: file-find.h
===================================================================
--- file-find.h (revision 200203)
+++ file-find.h (working copy)
@@ -38,7 +38,7 @@
};
extern void find_file_set_debug (bool);
-extern char *find_a_file (struct path_prefix *, const char *);
+extern char *find_a_file (struct path_prefix *, const char *, int mode);
extern void add_prefix (struct path_prefix *, const char *);
extern void prefix_from_env (const char *, struct path_prefix *);
extern void prefix_from_string (const char *, struct path_prefix *);
Index: collect2.c
===================================================================
--- collect2.c (revision 200203)
+++ collect2.c (working copy)
@@ -1110,55 +1110,55 @@
if (ld_file_name == 0)
#endif
#ifdef REAL_LD_FILE_NAME
- ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME);
+ ld_file_name = find_a_file (&path, REAL_LD_FILE_NAME, X_OK);
if (ld_file_name == 0)
#endif
/* Search the (target-specific) compiler dirs for ld'. */
- ld_file_name = find_a_file (&cpath, real_ld_suffix);
+ ld_file_name = find_a_file (&cpath, real_ld_suffix, X_OK);
/* Likewise for `collect-ld'. */
if (ld_file_name == 0)
{
- ld_file_name = find_a_file (&cpath, collect_ld_suffix);
+ ld_file_name = find_a_file (&cpath, collect_ld_suffix, X_OK);
use_collect_ld = ld_file_name != 0;
}
/* Search the compiler directories for `ld'. We have protection against
recursive calls in find_a_file. */
if (ld_file_name == 0)
- ld_file_name = find_a_file (&cpath, ld_suffixes[selected_linker]);
+ ld_file_name = find_a_file (&cpath, ld_suffixes[selected_linker], X_OK);
/* Search the ordinary system bin directories
for `ld' (if native linking) or `TARGET-ld' (if cross). */
if (ld_file_name == 0)
- ld_file_name = find_a_file (&path, full_ld_suffixes[selected_linker]);
+ ld_file_name = find_a_file (&path, full_ld_suffixes[selected_linker],
X_OK);
#ifdef REAL_NM_FILE_NAME
- nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME);
+ nm_file_name = find_a_file (&path, REAL_NM_FILE_NAME, X_OK);
if (nm_file_name == 0)
#endif
- nm_file_name = find_a_file (&cpath, gnm_suffix);
+ nm_file_name = find_a_file (&cpath, gnm_suffix, X_OK);
if (nm_file_name == 0)
- nm_file_name = find_a_file (&path, full_gnm_suffix);
+ nm_file_name = find_a_file (&path, full_gnm_suffix, X_OK);
if (nm_file_name == 0)
- nm_file_name = find_a_file (&cpath, nm_suffix);
+ nm_file_name = find_a_file (&cpath, nm_suffix, X_OK);
if (nm_file_name == 0)
- nm_file_name = find_a_file (&path, full_nm_suffix);
+ nm_file_name = find_a_file (&path, full_nm_suffix, X_OK);
#ifdef LDD_SUFFIX
- ldd_file_name = find_a_file (&cpath, ldd_suffix);
+ ldd_file_name = find_a_file (&cpath, ldd_suffix, X_OK);
if (ldd_file_name == 0)
- ldd_file_name = find_a_file (&path, full_ldd_suffix);
+ ldd_file_name = find_a_file (&path, full_ldd_suffix, X_OK);
#endif
#ifdef REAL_STRIP_FILE_NAME
- strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME);
+ strip_file_name = find_a_file (&path, REAL_STRIP_FILE_NAME, X_OK);
if (strip_file_name == 0)
#endif
- strip_file_name = find_a_file (&cpath, gstrip_suffix);
+ strip_file_name = find_a_file (&cpath, gstrip_suffix, X_OK);
if (strip_file_name == 0)
- strip_file_name = find_a_file (&path, full_gstrip_suffix);
+ strip_file_name = find_a_file (&path, full_gstrip_suffix, X_OK);
if (strip_file_name == 0)
- strip_file_name = find_a_file (&cpath, strip_suffix);
+ strip_file_name = find_a_file (&cpath, strip_suffix, X_OK);
if (strip_file_name == 0)
- strip_file_name = find_a_file (&path, full_strip_suffix);
+ strip_file_name = find_a_file (&path, full_strip_suffix, X_OK);
/* Determine the full path name of the C compiler to use. */
c_file_name = getenv ("COLLECT_GCC");
@@ -1171,12 +1171,12 @@
#endif
}
- p = find_a_file (&cpath, c_file_name);
+ p = find_a_file (&cpath, c_file_name, X_OK);
/* Here it should be safe to use the system search path since we should have
already qualified the name of the compiler when it is needed. */
if (p == 0)
- p = find_a_file (&path, c_file_name);
+ p = find_a_file (&path, c_file_name, X_OK);
if (p)
c_file_name = p;
