| # 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_pair 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. :-) |
| c_model=c_std |
| c_compatibility=no |
| |
| |
| # 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*) |
| try_cpu=alpha |
| ;; |
| athlon* | i586 | i686 | i786 | x86_64) |
| try_cpu=i486 |
| ;; |
| hppa*) |
| try_cpu=hppa |
| ;; |
| m680[246]0) |
| try_cpu=m68k |
| ;; |
| powerpc* | rs6000) |
| try_cpu=powerpc |
| ;; |
| s390x) |
| try_cpu=s390 |
| ;; |
| sparc* | ultrasparc) |
| try_cpu=sparc |
| ;; |
| *) |
| if test -d ${glibcpp_srcdir}/config/cpu/${target_cpu}; then |
| try_cpu=${target_cpu} |
| else |
| try_cpu=generic |
| fi |
| ;; |
| esac |
| |
| |
| # Now look for the file(s) usually tied to a CPU model, and make |
| # default choices for those if they haven't been explicitly set |
| # already. |
| cpu_include_dir="cpu/${try_cpu}" |
| ATOMICITYH=$cpu_include_dir |
| abi_baseline_pair=${try_cpu}-${host_os} |
| |
| # Set any OS-dependent bits. |
| # Set the os_include_dir. |
| # Set c_model, c_compatibility here. |
| # If atomic ops and/or numeric limits are OS-specific rather than |
| # CPU-specifc, set those here too. |
| # THIS TABLE IS SORTED. KEEP IT THAT WAY. |
| case "${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" |
| ;; |
| *djgpp*) # leading * picks up "msdosdjgpp" |
| os_include_dir="os/djgpp" |
| ;; |
| freebsd*) |
| os_include_dir="os/bsd/freebsd" |
| ;; |
| 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 | solaris2.5.[0-9]) |
| os_include_dir="os/solaris/solaris2.5" |
| ;; |
| solaris2.6) |
| os_include_dir="os/solaris/solaris2.6" |
| ;; |
| solaris2.[789] | solaris2.1[0-9]) |
| 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" |
| ;; |
| x86_64-*-linux*) |
| abi_baseline_pair="x86_64-linux-gnu" |
| ;; |
| alpha*-*-freebsd5*) |
| abi_baseline_pair="alpha-freebsd5" |
| ;; |
| i*86-*-freebsd4*) |
| abi_baseline_pair="i386-freebsd4" |
| ;; |
| i*86-*-freebsd5*) |
| abi_baseline_pair="i386-freebsd5" |
| ;; |
| sparc*-*-freebsd5*) |
| abi_baseline_pair="sparc-freebsd5" |
| ;; |
| esac |