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Darwin: Use -platform_version when available [PR110624].

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Later versions of the static linker support a more flexible flag to
describe the OS, OS version and SDK used to build the code.  This
replaces the functionality of '-mmacosx_version_min' (which is now
deprecated, leading to the diagnostic described in the PR).

We now use the platform_version flag when available which avoids the
diagnostic.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>

	PR target/110624

gcc/ChangeLog:

	* config/darwin.h (DARWIN_PLATFORM_ID): New.
	(LINK_COMMAND_A): Use DARWIN_PLATFORM_ID to pass OS, OS version
	and SDK data to the static linker.

(cherry picked from commit 032b5da1fc781bd3c23d9caa72fb09439e7f6f3a)
This commit is contained in:
Iain Sandoe 2023-07-13 07:36:51 +01:00
parent c042baa99e
commit 4adf49a436
1 changed files with 12 additions and 3 deletions
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15
gcc/config/darwin.h
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@ -276,6 +276,14 @@ extern GTY(()) int darwin_ms_struct;
#define DARWIN_RDYNAMIC "%{rdynamic:%nrdynamic is not supported}"
#endif
#if LD64_HAS_PLATFORM_VERSION
#define DARWIN_PLATFORM_ID \
"%{mmacosx-version-min=*: -platform_version macos %* 0.0} "
#else
#define DARWIN_PLATFORM_ID \
"%{mmacosx-version-min=*:-macosx_version_min %*} "
#endif
/* Code built with mdynamic-no-pic does not support PIE/PIC, so we disallow
these combinations; we also ensure that the no_pie option is passed to
ld64 on system versions that default to PIE when mdynamic-no-pic is given.
@ -351,7 +359,9 @@ extern GTY(()) int darwin_ms_struct;
LINK_PLUGIN_SPEC \
"%{flto*:%<fcompare-debug*} \
%{flto} %{fno-lto} %{flto=*} \
%l " LINK_COMPRESS_DEBUG_SPEC \
%l " \
DARWIN_PLATFORM_ID \
LINK_COMPRESS_DEBUG_SPEC \
"%X %{s} %{t} %{Z} %{u*} \
%{e*} %{r} \
%{o*}%{!o:-o a.out} \
@ -454,8 +464,7 @@ extern GTY(()) int darwin_ms_struct;
%{force_cpusubtype_ALL:-arch %(darwin_arch)} \
%{!force_cpusubtype_ALL:-arch %(darwin_subarch)} "\
LINK_SYSROOT_SPEC \
"%{mmacosx-version-min=*:-macosx_version_min %*} \
%{!multiply_defined*:%{shared-libgcc: \
"%{!multiply_defined*:%{shared-libgcc: \
%:version-compare(< 10.5 mmacosx-version-min= -multiply_defined) \
%:version-compare(< 10.5 mmacosx-version-min= suppress) }} \
%{sectalign*} %{sectcreate*} %{sectobjectsymbols*} %{sectorder*} \