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| author | Nathan Sidwell <nathan@acm.org> | 2021-02-04 08:16:17 -0800 |
|---|---|---|
| committer | Nathan Sidwell <nathan@acm.org> | 2021-02-05 05:32:34 -0800 |
| commit | 6606b852bfa866c19375a7c5e9cb94776a28bd94 (patch) | |
| tree | 47ea757d2b70c5eabd3e71ce8a76785e1a28a138 /gcc/gcc.c | |
| parent | 63538886d1f7fc7cbf066b4c2d6d7fd4da537259 (diff) | |
| download | gcc-6606b852bfa866c19375a7c5e9cb94776a28bd94.zip gcc-6606b852bfa866c19375a7c5e9cb94776a28bd94.tar.gz gcc-6606b852bfa866c19375a7c5e9cb94776a28bd94.tar.bz2 | |
driver: error for nonexistent linker inputs [PR 98943]
We used to check all unknown input files, even when passing them to a
compiler. But that caused problems. However, not erroring out on
non-existent would-be-linker inputs confuses configure machinery that
probes the compiler to see if it accepts various inputs. This
restores the access check for things that are thought to be linker
input files, when we're not linking. (If we are linking, we presume
the linker will error out on its own accord.)
PR driver/98943
gcc/
* gcc.c (driver::maybe_run_linker): Check for input file
accessibility if not linking.
gcc/testsuite/
* c-c++-common/pr98943.c: New.
Diffstat (limited to 'gcc/gcc.c')
| -rw-r--r-- | gcc/gcc.c | 11 |
1 files changed, 9 insertions, 2 deletions
@@ -9020,8 +9020,15 @@ driver::maybe_run_linker (const char *argv0) const for (i = 0; (int) i < n_infiles; i++) if (explicit_link_files[i] && !(infiles[i].language && infiles[i].language[0] == '*')) - warning (0, "%s: linker input file unused because linking not done", - outfiles[i]); + { + warning (0, "%s: linker input file unused because linking not done", + outfiles[i]); + if (access (outfiles[i], F_OK) < 0) + /* This is can be an indication the user specifed an errorneous + separated option value, (or used the wrong prefix for an + option). */ + error ("%s: linker input file not found: %m", outfiles[i]); + } } /* The end of "main". */ |