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| author | H.J. Lu <hjl.tools@gmail.com> | 2012-12-07 17:56:09 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2012-12-07 17:56:09 +0000 |
| commit | 3bd58fbe7576a68f9361978288457ab6e0912e3b (patch) | |
| tree | a219476defefdc2d05e8febbc58208e82ba12775 /ld | |
| parent | 741e01282880b5fd10c43ad74445bb5825e95197 (diff) | |
| download | gdb-3bd58fbe7576a68f9361978288457ab6e0912e3b.zip gdb-3bd58fbe7576a68f9361978288457ab6e0912e3b.tar.gz gdb-3bd58fbe7576a68f9361978288457ab6e0912e3b.tar.bz2 | |
Add check_lto_available
* lib/ld-lib.exp (check_lto_available): New. Check if compiler
supports LTO.
Diffstat (limited to 'ld')
| -rw-r--r-- | ld/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | ld/testsuite/lib/ld-lib.exp | 28 |
2 files changed, 33 insertions, 0 deletions
diff --git a/ld/testsuite/ChangeLog b/ld/testsuite/ChangeLog index 15fb595..c957324 100644 --- a/ld/testsuite/ChangeLog +++ b/ld/testsuite/ChangeLog @@ -1,5 +1,10 @@ 2012-12-07 H.J. Lu <hongjiu.lu@intel.com> + * lib/ld-lib.exp (check_lto_available): New. Check if compiler + supports LTO. + +2012-12-07 H.J. Lu <hongjiu.lu@intel.com> + * lib/ld-lib.exp (run_cc_link_tests): Properly check linker warnings. diff --git a/ld/testsuite/lib/ld-lib.exp b/ld/testsuite/lib/ld-lib.exp index f08b9bf..5f49e74 100644 --- a/ld/testsuite/lib/ld-lib.exp +++ b/ld/testsuite/lib/ld-lib.exp @@ -1614,6 +1614,34 @@ proc check_plugin_api_available { } { return $plugin_api_available_saved } +# Returns true if the target compiler supports LTO +proc check_lto_available { } { + global lto_available_saved + global CC + if {![info exists lto_available_saved]} { + # Check if gcc supports -flto -fuse-linker-plugin + if { [which $CC] == 0 } { + set lto_available_saved 0 + return 0 + } + set basename "lto" + set src ${basename}[pid].c + set output ${basename}[pid].so + set f [open $src "w"] + puts $f "" + close $f + set status [remote_exec host $CC "-shared -B[pwd]/tmpdir/ld/ -flto -fuse-linker-plugin $src -o $output"] + if { [lindex $status 0] == 0 } { + set lto_available_saved 1 + } else { + set lto_available_saved 0 + } + file delete $src + file delete $output + } + return $lto_available_saved +} + # Check if the assembler supports CFI statements. proc check_as_cfi { } { |