| 1 | # The -mdynamic-no-pic ensures that the compiler executable is built without |
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| 2 | # position-independent-code -- the usual default on Darwin. This fix speeds |
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| 3 | # compiles by 3-5%. Don't add it if the compiler doesn't also support |
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| 4 | # -mno-dynamic-no-pic to undo it. |
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| 5 | DARWIN_MDYNAMIC_NO_PIC := \ |
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| 6 | `case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \ |
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| 7 | $(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \ |
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| 8 | && echo -mdynamic-no-pic ;; esac` |
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| 9 | DARWIN_GCC_MDYNAMIC_NO_PIC := \ |
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| 10 | `case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \ |
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| 11 | $(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \ |
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| 12 | || echo -mdynamic-no-pic ;; esac` |
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| 13 | |
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| 14 | # ld on Darwin versions >= 10.7 defaults to PIE executables. Disable this for |
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| 15 | # gcc components, since it is incompatible with our pch implementation. |
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| 16 | DARWIN_NO_PIE := `case ${host} in *-*-darwin[1][1-9]*) echo -Wl,-no_pie ;; esac;` |
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| 17 | |
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| 18 | BOOT_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC) |
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| 19 | BOOT_LDFLAGS += $(DARWIN_NO_PIE) |
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| 20 | |
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| 21 | # Similarly, for cross-compilation. |
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| 22 | STAGE1_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC) |
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| 23 | STAGE1_LDFLAGS += $(DARWIN_NO_PIE) |
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| 24 | |
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| 25 | # Without -mno-dynamic-no-pic support, add -mdynamic-no-pic just to later |
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| 26 | # stages when we know it is built with gcc. |
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| 27 | STAGE2_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) |
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| 28 | STAGE3_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) |
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| 29 | STAGE4_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) |
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