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[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [config/] [picflag.m4] - Rev 292
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# _GCC_PICFLAG(FLAG, DISPATCH) # ---------------------------- # Store PIC flag corresponding to DISPATCH triplet in FLAG. # Explit use of -fpic in CFLAGS corresponding to FLAG overrides default. AC_DEFUN([_GCC_PICFLAG], [ case "${$2}" in # PIC is the default on some targets or must not be used. *-*-darwin*) # PIC is the default on this platform # Common symbols not allowed in MH_DYLIB files $1=-fno-common ;; alpha*-dec-osf5*) # PIC is the default. ;; hppa*64*-*-hpux*) # PIC is the default for 64-bit PA HP-UX. ;; i[[34567]]86-*-cygwin* | i[[34567]]86-*-mingw* | x86_64-*-mingw*) ;; i[[34567]]86-*-interix3*) # Interix 3.x gcc -fpic/-fPIC options generate broken code. # Instead, we relocate shared libraries at runtime. ;; i[[34567]]86-*-nto-qnx*) # QNX uses GNU C++, but need to define -shared option too, otherwise # it will coredump. $1='-fPIC -shared' ;; i[[34567]]86-pc-msdosdjgpp*) # DJGPP does not support shared libraries at all. ;; ia64*-*-hpux*) # On IA64 HP-UX, PIC is the default but the pic flag # sets the default TLS model and affects inlining. $1=-fPIC ;; mips-sgi-irix6*) # PIC is the default. ;; rs6000-ibm-aix* | powerpc-ibm-aix*) # All AIX code is PIC. ;; # Some targets support both -fPIC and -fpic, but prefer the latter. # FIXME: Why? i[[34567]]86-*-* | x86_64-*-*) $1=-fpic ;; m68k-*-*) $1=-fpic ;; s390*-*-*) $1=-fpic ;; # FIXME: Override -fPIC default in libgcc only? sh-*-linux* | sh[[2346lbe]]*-*-linux*) $1=-fpic ;; # FIXME: Simplify to sh*-*-netbsd*? sh-*-netbsdelf* | shl*-*-netbsdelf* | sh5-*-netbsd* | sh5l*-*-netbsd* | \ sh64-*-netbsd* | sh64l*-*-netbsd*) $1=-fpic ;; # Default to -fPIC unless specified otherwise. *) $1=-fPIC ;; esac # If the user explicitly uses -fpic/-fPIC, keep that. case "${m4_bpatsubsts($1, PICFLAG, CFLAGS)}" in *-fpic*) $1=-fpic ;; *-fPIC*) $1=-fPIC ;; esac ]) # GCC_PICFLAG # ----------- # Store host PIC flag in PICFLAG. AC_DEFUN([GCC_PICFLAG], [ AC_REQUIRE([AC_CANONICAL_HOST]) _GCC_PICFLAG([PICFLAG], [host])]) # GCC_PICFLAG_FOR_TARGET # ---------------------- # Store target PIC flag in PICFLAG_FOR_TARGET. AC_DEFUN([GCC_PICFLAG_FOR_TARGET], [ AC_REQUIRE([AC_CANONICAL_TARGET]) _GCC_PICFLAG([PICFLAG_FOR_TARGET], [target])])
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