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| author | Iain Sandoe <iain@sandoe.co.uk> | 2023-10-25 15:28:52 +0100 |
|---|---|---|
| committer | Iain Sandoe <iain@sandoe.co.uk> | 2023-10-25 20:46:59 +0100 |
| commit | da9e72f80f3358bd9586e11aaf03341c1f867318 (patch) | |
| tree | c4719800fda5edd13e0c39be069a3fc2fb650c7c /gcc | |
| parent | 8f62ce10bc984855ca98483746ead2730eb36e2e (diff) | |
| download | gcc-da9e72f80f3358bd9586e11aaf03341c1f867318.zip gcc-da9e72f80f3358bd9586e11aaf03341c1f867318.tar.gz gcc-da9e72f80f3358bd9586e11aaf03341c1f867318.tar.bz2 | |
Darwin: Handle the fPIE option specially.
For Darwin, PIE requires PIC codegen, but otherwise is only a link-time
change. For almost all Darwin, we do not report __PIE__; the exception is
32bit X86 and from Darwin12 to 17 only (32 bit is no longer supported
after Darwin17).
gcc/ChangeLog:
* config/darwin.cc (darwin_override_options): Handle fPIE.
Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/darwin.cc | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/gcc/config/darwin.cc b/gcc/config/darwin.cc index a80b6ca..621a94d 100644 --- a/gcc/config/darwin.cc +++ b/gcc/config/darwin.cc @@ -3325,6 +3325,8 @@ darwin_override_options (void) { if (strverscmp (darwin_macosx_version_min, "10.14") >= 0) generating_for_darwin_version = 18; + else if (strverscmp (darwin_macosx_version_min, "10.8") >= 0) + generating_for_darwin_version = 12; else if (strverscmp (darwin_macosx_version_min, "10.7") >= 0) generating_for_darwin_version = 11; else if (strverscmp (darwin_macosx_version_min, "10.6") >= 0) @@ -3495,8 +3497,17 @@ darwin_override_options (void) && dwarf_debuginfo_p ()) flag_var_tracking_uninit = flag_var_tracking; - /* Final check on PCI options; for Darwin these are not dependent on the PIE - ones, although PIE does require PIC to support it. */ + if (OPTION_SET_P (flag_pie) && flag_pie) + { + /* This is a little complicated, to match Xcode tools. + For Darwin, PIE requires PIC codegen, but otherwise is only a link- + time change. For almost all Darwin, we do not report __PIE__; the + exception is Darwin12-17 and for 32b only. */ + flag_pie = generating_for_darwin_version >= 12 && !TARGET_64BIT ? 2 : 0; + flag_pic = 2; /* We always set this. */ + } + + /* Final check on PIC options. */ if (MACHO_DYNAMIC_NO_PIC_P) { if (flag_pic) |