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0b51ce00 AK |
1 | dnl @synopsis GCC_AC_ENABLE_DECIMAL_FLOAT([target triplet]) |
2 | dnl | |
3 | dnl Enable C extension for decimal float if target supports it. | |
4 | dnl | |
5 | dnl @author Andreas Krebbel <Andreas.Krebbel@de.ibm.com> | |
6 | ||
7 | AC_DEFUN([GCC_AC_ENABLE_DECIMAL_FLOAT], | |
8 | [ | |
9 | AC_ARG_ENABLE(decimal-float, | |
10 | [ --enable-decimal-float={no,yes,bid,dpd} | |
11 | enable decimal float extension to C. Selecting 'bid' | |
12 | or 'dpd' choses which decimal floating point format | |
13 | to use], | |
14 | [ | |
15 | case $enable_decimal_float in | |
bbb3c81a | 16 | yes | no | bid | dpd) default_decimal_float=$enable_decimal_float ;; |
0b51ce00 AK |
17 | *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float. |
18 | Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;; | |
19 | esac | |
20 | ], | |
21 | [ | |
22 | case $1 in | |
23 | powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux* | s390*-*-linux*) | |
24 | enable_decimal_float=yes | |
25 | ;; | |
26 | *) | |
bbb3c81a | 27 | AC_MSG_WARN([decimal float is not supported for this target, ignored]) |
0b51ce00 AK |
28 | enable_decimal_float=no |
29 | ;; | |
30 | esac | |
31 | ]) | |
32 | ||
33 | # x86's use BID format instead of DPD | |
34 | case x$enable_decimal_float in | |
35 | xyes) | |
36 | case $1 in | |
37 | i?86*-*-* | x86_64*-*-*) | |
38 | enable_decimal_float=bid | |
39 | ;; | |
40 | *) | |
41 | enable_decimal_float=dpd | |
42 | ;; | |
43 | esac | |
bbb3c81a | 44 | default_decimal_float=$enable_decimal_float |
0b51ce00 AK |
45 | ;; |
46 | xno) | |
47 | # ENABLE_DECIMAL_FLOAT is set to 0. But we have to have proper | |
48 | # dependency on libdecnumber. | |
bbb3c81a | 49 | default_decimal_float=dpd |
0b51ce00 AK |
50 | ;; |
51 | esac | |
52 | AC_SUBST(enable_decimal_float) | |
53 | ||
bbb3c81a | 54 | ]) |