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configure: Allow host fragments to react to --enable-host-shared.

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This makes the host_shared value available to host makefile
fragments.

It uses this to adjust Darwin's mdynamic-no-pic in the case that
shared host resources are required.

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

config/
	* mh-darwin: Require a non-shared host configuration to
	enable  mdynamic-no-pic where that is supported.
This commit is contained in:
Iain Sandoe
2023-08-07 13:07:24 +02:00
committed by Alan Modra
parent 3c4e12ba88
commit c841db9538
1 changed files with 8 additions and 0 deletions
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8
config/mh-darwin
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@@ -11,9 +11,15 @@
# non-bootstrapped compiler), later stages will be built by GCC which supports # non-bootstrapped compiler), later stages will be built by GCC which supports
# the required flags. # the required flags.
# We cannot use mdynamic-no-pic when building shared host resources.
ifeq (${host_shared},no)
BOOTSTRAP_TOOL_CAN_USE_MDYNAMIC_NO_PIC := $(shell \ BOOTSTRAP_TOOL_CAN_USE_MDYNAMIC_NO_PIC := $(shell \
$(CC) -S -xc /dev/null -o /dev/null -Werror -mno-dynamic-no-pic 2>/dev/null \ $(CC) -S -xc /dev/null -o /dev/null -Werror -mno-dynamic-no-pic 2>/dev/null \
&& echo true) && echo true)
else
BOOTSTRAP_TOOL_CAN_USE_MDYNAMIC_NO_PIC := false
endif
@if gcc-bootstrap @if gcc-bootstrap
ifeq (${BOOTSTRAP_TOOL_CAN_USE_MDYNAMIC_NO_PIC},true) ifeq (${BOOTSTRAP_TOOL_CAN_USE_MDYNAMIC_NO_PIC},true)
@@ -21,8 +27,10 @@ STAGE1_CFLAGS += -mdynamic-no-pic
else else
STAGE1_CFLAGS += -fPIC STAGE1_CFLAGS += -fPIC
endif endif
ifeq (${host_shared},no)
# Add -mdynamic-no-pic to later stages when we know it is built with GCC. # Add -mdynamic-no-pic to later stages when we know it is built with GCC.
BOOT_CFLAGS += -mdynamic-no-pic BOOT_CFLAGS += -mdynamic-no-pic
endif
@endif gcc-bootstrap @endif gcc-bootstrap
@unless gcc-bootstrap @unless gcc-bootstrap