| # configure.host |
| # |
| # This shell script handles all host based configuration for libgfortran. |
| # It sets various shell variables based on the the host triplet. |
| # You can modify this shell script without rerunning autoconf/aclocal/etc. |
| # This file is "sourced", not executed. |
| # |
| # |
| # It uses the following shell variables as set by config.guess: |
| # host The configuration host (full CPU-vendor-OS triplet) |
| # host_cpu The configuration host CPU |
| # host_os The configuration host OS |
| # |
| # |
| # It sets the following shell variables: |
| # |
| # fpu_host FPU-specific code file, defaults to fpu-generic. |
| |
| |
| # DEFAULTS |
| fpu_host='fpu-generic' |
| ieee_support='no' |
| |
| if test "x${have_fp_enable}" = "xyes" && test "x${have_fp_trap}" = "xyes"; then |
| fpu_host='fpu-aix' |
| ieee_support='yes' |
| fi |
| |
| if test "x${have_fpsetmask}" = "xyes"; then |
| fpu_host='fpu-sysv' |
| ieee_support='yes' |
| fi |
| |
| if test "x${have_feenableexcept}" = "xyes"; then |
| fpu_host='fpu-glibc' |
| ieee_support='yes' |
| fi |
| |
| # x86 asm should be used instead of glibc, since glibc doesn't support |
| # the x86 denormal exception. |
| case "${host_cpu}" in |
| i?86 | x86_64) |
| fpu_host='fpu-387' |
| ieee_support='yes' |
| ;; |
| esac |
| |
| # Some targets require additional compiler options for NaN/Inf. |
| ieee_flags= |
| case "${host_cpu}" in |
| alpha*) |
| ieee_flags="-mieee" ;; |
| sh*) |
| ieee_flags="-mieee" ;; |
| esac |