mirror of git://gcc.gnu.org/git/gcc.git
30 lines
1.3 KiB
Plaintext
30 lines
1.3 KiB
Plaintext
# The -mdynamic-no-pic ensures that the compiler executable is built without
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# position-independent-code -- the usual default on Darwin. This fix speeds
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# compiles by 3-5%. Don't add it if the compiler doesn't also support
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# -mno-dynamic-no-pic to undo it.
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DARWIN_MDYNAMIC_NO_PIC := \
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`case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \
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$(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \
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&& echo -mdynamic-no-pic ;; esac`
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DARWIN_GCC_MDYNAMIC_NO_PIC := \
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`case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \
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$(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \
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|| echo -mdynamic-no-pic ;; esac`
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# ld on Darwin versions >= 10.7 defaults to PIE executables. Disable this for
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# gcc components, since it is incompatible with our pch implementation.
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DARWIN_NO_PIE := `case ${host} in *-*-darwin[1][1-9]*) echo -Wl,-no_pie ;; esac;`
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BOOT_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC)
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BOOT_LDFLAGS += $(DARWIN_NO_PIE)
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# Similarly, for cross-compilation.
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STAGE1_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC)
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STAGE1_LDFLAGS += $(DARWIN_NO_PIE)
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# Without -mno-dynamic-no-pic support, add -mdynamic-no-pic just to later
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# stages when we know it is built with gcc.
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STAGE2_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC)
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STAGE3_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC)
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STAGE4_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC)
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