1 # The -mdynamic-no-pic ensures that the compiler executable is built without 2 # position-independent-code -- the usual default on Darwin. This fix speeds 3 # compiles by 3-5%. Don't add it if the compiler doesn't also support 4 # -mno-dynamic-no-pic to undo it. 5 DARWIN_MDYNAMIC_NO_PIC := \ 6 `case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \ 7 $(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \ 8 && echo -mdynamic-no-pic ;; esac` 9 DARWIN_GCC_MDYNAMIC_NO_PIC := \ 10 `case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \ 11 $(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \ 12 || echo -mdynamic-no-pic ;; esac` 13 14 # ld on Darwin versions >= 10.7 defaults to PIE executables. Disable this for 15 # gcc components, since it is incompatible with our pch implementation. 16 DARWIN_NO_PIE := `case ${host} in *-*-darwin[1][1-9]*) echo -Wl,-no_pie ;; esac;` 17 18 BOOT_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC) 19 BOOT_LDFLAGS += $(DARWIN_NO_PIE) 20 21 # Similarly, for cross-compilation. 22 STAGE1_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC) 23 STAGE1_LDFLAGS += $(DARWIN_NO_PIE) 24 25 # Without -mno-dynamic-no-pic support, add -mdynamic-no-pic just to later 26 # stages when we know it is built with gcc. 27 STAGE2_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) 28 STAGE3_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) 29 STAGE4_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) 30
