projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 9a39e741 RO |
1 | # _GCC_PICFLAG(FLAG, DISPATCH) |
| 2 | # ---------------------------- | |
| 3 | # Store PIC flag corresponding to DISPATCH triplet in FLAG. | |
| 4 | # Explit use of -fpic in CFLAGS corresponding to FLAG overrides default. | |
| 5 | AC_DEFUN([_GCC_PICFLAG], [ | |
| 6 | ||
| 7 | case "${$2}" in | |
| 8 | # PIC is the default on some targets or must not be used. | |
| 9 | *-*-darwin*) | |
| f91ca6bc IB |
10 | # For darwin, common symbols are not allowed in MH_DYLIB files |
| 11 | case "${CFLAGS}" in | |
| 12 | # If we are using a compiler supporting mdynamic-no-pic | |
| 13 | # and the option has been tested as safe to add, then cancel | |
| 14 | # it here, since the code generated is incompatible with shared | |
| 0913ae5a | 15 | # libs. |
| f91ca6bc IB |
16 | *-mdynamic-no-pic*) $1='-fno-common -mno-dynamic-no-pic' ;; |
| 17 | *) $1=-fno-common ;; | |
| 18 | esac | |
| 9a39e741 RO |
19 | ;; |
| 20 | alpha*-dec-osf5*) | |
| 21 | # PIC is the default. | |
| 22 | ;; | |
| 23 | hppa*64*-*-hpux*) | |
| 24 | # PIC is the default for 64-bit PA HP-UX. | |
| 25 | ;; | |
| 2cc10f5b JBG |
26 | i[[34567]]86-*-cygwin* | x86_64-*-cygwin*) |
| 27 | ;; | |
| 28 | i[[34567]]86-*-mingw* | x86_64-*-mingw*) | |
| 9a39e741 | 29 | ;; |
| acf89cab | 30 | i[[34567]]86-*-interix[[3-9]]*) |
| 9a39e741 RO |
31 | # Interix 3.x gcc -fpic/-fPIC options generate broken code. |
| 32 | # Instead, we relocate shared libraries at runtime. | |
| 33 | ;; | |
| 34 | i[[34567]]86-*-nto-qnx*) | |
| 35 | # QNX uses GNU C++, but need to define -shared option too, otherwise | |
| 36 | # it will coredump. | |
| 37 | $1='-fPIC -shared' | |
| 38 | ;; | |
| 39 | i[[34567]]86-pc-msdosdjgpp*) | |
| 40 | # DJGPP does not support shared libraries at all. | |
| 41 | ;; | |
| 42 | ia64*-*-hpux*) | |
| 43 | # On IA64 HP-UX, PIC is the default but the pic flag | |
| 44 | # sets the default TLS model and affects inlining. | |
| 45 | $1=-fPIC | |
| 46 | ;; | |
| 47 | mips-sgi-irix6*) | |
| 48 | # PIC is the default. | |
| 49 | ;; | |
| 50 | rs6000-ibm-aix* | powerpc-ibm-aix*) | |
| 51 | # All AIX code is PIC. | |
| 52 | ;; | |
| 53 | ||
| 54 | # Some targets support both -fPIC and -fpic, but prefer the latter. | |
| 55 | # FIXME: Why? | |
| 56 | i[[34567]]86-*-* | x86_64-*-*) | |
| 57 | $1=-fpic | |
| 58 | ;; | |
| 9a39e741 RO |
59 | # FIXME: Override -fPIC default in libgcc only? |
| 60 | sh-*-linux* | sh[[2346lbe]]*-*-linux*) | |
| 61 | $1=-fpic | |
| 62 | ;; | |
| 63 | # FIXME: Simplify to sh*-*-netbsd*? | |
| 64 | sh-*-netbsdelf* | shl*-*-netbsdelf* | sh5-*-netbsd* | sh5l*-*-netbsd* | \ | |
| 65 | sh64-*-netbsd* | sh64l*-*-netbsd*) | |
| 66 | $1=-fpic | |
| 67 | ;; | |
| 68 | # Default to -fPIC unless specified otherwise. | |
| 69 | *) | |
| 70 | $1=-fPIC | |
| 71 | ;; | |
| 72 | esac | |
| 73 | ||
| 74 | # If the user explicitly uses -fpic/-fPIC, keep that. | |
| 75 | case "${m4_bpatsubsts($1, PICFLAG, CFLAGS)}" in | |
| 76 | *-fpic*) | |
| 77 | $1=-fpic | |
| 78 | ;; | |
| 79 | *-fPIC*) | |
| 80 | $1=-fPIC | |
| 81 | ;; | |
| 82 | esac | |
| 83 | ]) | |
| 84 | ||
| 85 | # GCC_PICFLAG | |
| 86 | # ----------- | |
| 87 | # Store host PIC flag in PICFLAG. | |
| 88 | AC_DEFUN([GCC_PICFLAG], [ | |
| 89 | AC_REQUIRE([AC_CANONICAL_HOST]) | |
| 90 | _GCC_PICFLAG([PICFLAG], [host])]) | |
| 91 | ||
| 92 | # GCC_PICFLAG_FOR_TARGET | |
| 93 | # ---------------------- | |
| 94 | # Store target PIC flag in PICFLAG_FOR_TARGET. | |
| 95 | AC_DEFUN([GCC_PICFLAG_FOR_TARGET], [ | |
| 96 | AC_REQUIRE([AC_CANONICAL_TARGET]) | |
| 97 | _GCC_PICFLAG([PICFLAG_FOR_TARGET], [target])]) |