diff options
Diffstat (limited to 'config/mh-darwin')
| -rw-r--r-- | config/mh-darwin | 31 |
1 files changed, 21 insertions, 10 deletions
diff --git a/config/mh-darwin b/config/mh-darwin index a039f201410..148b73038c3 100644 --- a/config/mh-darwin +++ b/config/mh-darwin @@ -1,18 +1,29 @@ # The -mdynamic-no-pic ensures that the compiler executable is built without # position-independent-code -- the usual default on Darwin. This fix speeds -# compiles by 3-5%. -BOOT_CFLAGS += \ +# compiles by 3-5%. Don't add it if the compiler doesn't also support +# -mno-dynamic-no-pic to undo it. +DARWIN_MDYNAMIC_NO_PIC := \ `case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \ - echo -mdynamic-no-pic ;; esac;` + $(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \ + && echo -mdynamic-no-pic ;; esac` +DARWIN_GCC_MDYNAMIC_NO_PIC := \ +`case ${host} in i?86-*-darwin* | powerpc-*-darwin*) \ + $(CC) -S -xc /dev/null -o /dev/null -mno-dynamic-no-pic 2>/dev/null \ + || echo -mdynamic-no-pic ;; esac` # ld on Darwin versions >= 10.7 defaults to PIE executables. Disable this for # gcc components, since it is incompatible with our pch implementation. -BOOT_LDFLAGS += \ -`case ${host} in *-*-darwin[1][1-9]*) echo -Wl,-no_pie ;; esac;` +DARWIN_NO_PIE := `case ${host} in *-*-darwin[1][1-9]*) echo -Wl,-no_pie ;; esac;` + +BOOT_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC) +BOOT_LDFLAGS += $(DARWIN_NO_PIE) # Similarly, for cross-compilation. -STAGE1_CFLAGS += \ -`case ${host} in i?86-*-darwin* | powerpc-*-darwin*)\ - echo -mdynamic-no-pic ;; esac;` -STAGE1_LDFLAGS += \ -`case ${host} in *-*-darwin[1][1-9]*) echo -Wl,-no_pie ;; esac;` +STAGE1_CFLAGS += $(DARWIN_MDYNAMIC_NO_PIC) +STAGE1_LDFLAGS += $(DARWIN_NO_PIE) + +# Without -mno-dynamic-no-pic support, add -mdynamic-no-pic just to later +# stages when we know it is built with gcc. +STAGE2_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) +STAGE3_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) +STAGE4_CFLAGS += $(DARWIN_GCC_MDYNAMIC_NO_PIC) |