| [444] | 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) |
|---|
