# configure.target # # This shell script handles all target based configuration for libstdc++. # It sets various shell variables based on the the target and the # configuration options. You can modify this shell script without needing # to rerun autoconf/aclocal/etc. This file is "sourced" not executed. # # You should read docs/html/17_intro/porting.* to make sense of this file. # # # It uses the following shell variables as set by config.guess: # target The configuration target (full CPU-vendor-OS triplet) # target_cpu The configuration target CPU # target_os The configuration target OS # # # It sets the following shell variables: # # cpu_include_dir CPU-specific directory, defaults to cpu/generic # if cpu/target_cpu doesn't exist. This is # used to set ATOMICITYH. # # os_include_dir OS-specific directory, defaults to os/generic. # # c_model the model to use for "C" headers, defaults to c_std. # # c_compatibility if "C" compatibility headers are necessary, # defaults to no. # # abi_baseline_triplet directory name for ABI compat testing, # defaults to target (as per config.guess) # # ATOMICITYH location of atomicity.h, # defaults to cpu_include_dir # # It possibly modifies the following variables: # # OPT_LDFLAGS extra flags to pass when linking the library, of # the form '-Wl,blah' # (defaults to empty in acinclude.m4) # # # If the defaults will not work for your platform, you need only change the # variables that won't work, i.e., you do not need to explicitly set a # working variable to its default. Most targets only need to change the two # *_include_dir variables. # DEFAULTS # Try to guess a default cpu_include_dir based on the name of the CPU. We # cannot do this for os_include_dir; there are too many portable operating # systems out there. :-) abi_baseline_triplet=${target} c_model=c_std c_compatibility=no if test -d ${glibcpp_srcdir}/config/cpu/${target_cpu}; then cpu_include_dir="cpu/${target_cpu}" else cpu_include_dir="cpu/generic" fi # TARGET-SPECIFIC OVERRIDES # Set any CPU-dependent bits. # Here we override defaults and catch more general cases due to naming # conventions (e.g., chip_name* to catch all variants). # THIS TABLE IS SORTED. KEEP IT THAT WAY. case "${target_cpu}" in alpha*) cpu_include_dir="cpu/alpha" ;; athlon* | i586 | i686 | i786 | x86_64) cpu_include_dir="cpu/i486" ;; m68k | m680[246]0) cpu_include_dir="cpu/m68k" ;; hppa*) cpu_include_dir="cpu/hppa" ;; m680[246]0) cpu_include_dir="cpu/m68k" ;; powerpc* | rs6000) cpu_include_dir="cpu/powerpc" ;; s390x) cpu_include_dir="cpu/s390" ;; sparc* | ultrasparc) cpu_include_dir="cpu/sparc" ;; esac # Now look for the file(s) usually tied to a CPU model, and make default # choices for those if they haven't been explicitly set already. _cpu_incdir_fullpath=${glibcpp_srcdir}/config/${cpu_include_dir} if test x${ATOMICITYH+set} != xset; then if test -f ${_cpu_incdir_fullpath}/atomicity.h; then ATOMICITYH=$cpu_include_dir else ATOMICITYH="cpu/generic" fi fi unset _cpu_incdir_fullpath # Set any OS-dependent bits. # Set the os_include_dir. # Set c_model, c_compatibility here. # If atomic ops and/or numeric limits are OS-specific rather than # CPU-specifc, set those here too. # THIS TABLE IS SORTED. KEEP IT THAT WAY. case "${target_os}" in aix4.[3456789]* | aix[56789]*) # We set os_include_dir to os/aix only on AIX 4.3 and newer, but # os/aix/atomicity.h works on earlier versions of AIX 4.*, so we # explicitly duplicate the directory for 4.[<3]. os_include_dir="os/aix" ATOMICITYH="os/aix" OPT_LDFLAGS="-Wl,-G" ;; aix4.*) ATOMICITYH="os/aix" ;; aix*) ATOMICITYH="cpu/generic" ;; bsd*) # Plain BSD attempts to share FreeBSD files. os_include_dir="os/bsd/freebsd" ;; cygwin*) os_include_dir="os/newlib" ;; # APPLE LOCAL darwin native darwin* ) os_include_dir="os/bsd/darwin" enable_cxx_flags="-DAPPLE_KEYMGR $enable_cxx_flags" ;; *djgpp*) # leading * picks up "msdosdjgpp" os_include_dir="os/djgpp" ;; freebsd*) os_include_dir="os/bsd/freebsd" # The FreeBSD ABI is expressed in the major version number only. abi_baseline_triplet=`echo ${target} | sed 's,\(\.[0-9]*\)*$,,'` ;; gnu* | linux*) os_include_dir="os/gnu-linux" ;; hpux*) os_include_dir="os/hpux" ;; irix[1-6] | irix[1-5].* | irix6.[0-4]*) # This is known to work on at least IRIX 5.2 and 6.3. os_include_dir="os/irix/irix5.2" ATOMICITYH=$os_include_dir ;; irix6.5*) os_include_dir="os/irix/irix6.5" ATOMICITYH=$os_include_dir ;; mingw32*) os_include_dir="os/mingw32" ;; netbsd*) os_include_dir="os/bsd/netbsd" ;; solaris2.5*) os_include_dir="os/solaris/solaris2.5" ;; solaris2.6*) os_include_dir="os/solaris/solaris2.6" ;; solaris2.[78]*) os_include_dir="os/solaris/solaris2.7" ;; windiss*) os_include_dir="os/windiss" ;; qnx6.[12]*) os_include_dir="os/qnx/qnx6.1" c_model=c ;; *) os_include_dir="os/generic" ;; esac # Set any OS-dependent and CPU-dependent bits. # THIS TABLE IS SORTED. KEEP IT THAT WAY. case "${target}" in mips*-*-linux*) ATOMICITYH="cpu/mips" ;; esac