Commit | Line | Data |
---|---|---|
805e021f CE |
1 | dnl These options seem to only be used for the 2.4.x |
2 | dnl Linux kernel build | |
3 | AC_DEFUN([OPENAFS_GCC_SUPPORTS_MARCH], [ | |
4 | AC_CACHE_CHECK([if $CC accepts -march=pentium], | |
5 | [openafs_cv_gcc_supports_march], | |
6 | [save_CFLAGS="$CFLAGS" | |
7 | CFLAGS="-MARCH=pentium" | |
8 | AC_COMPILE_IFELSE( | |
9 | [AC_LANG_PROGRAM( | |
10 | [[]], | |
11 | [[int x;]])], | |
12 | [openafs_cv_gcc_supports_march=yes], | |
13 | [openafs_cv_gcc_supports_march=no]) | |
14 | CFLAGS="$save_CFLAGS" | |
15 | ]) | |
16 | AS_IF([test x$openafs_cv_gcc_supports_march = xyes], | |
17 | [P5PLUS_KOPTS="-march=pentium"], | |
18 | [P5PLUS_KOPTS="-m486 -malign-loops=2 -malign-jumps=2 -malign-functions=2"]) | |
19 | ]) | |
20 | ||
21 | AC_DEFUN([OPENAFS_GCC_NEEDS_NO_STRICT_ALIASING], [ | |
22 | AC_CACHE_CHECK([if $CC needs -fno-strict-aliasing], | |
23 | [openafs_cv_gcc_needs_no_strict_aliasing], | |
24 | [save_CFLAGS="$CFLAGS" | |
25 | CFLAGS="-fno-strict-aliasing" | |
26 | AC_COMPILE_IFELSE( | |
27 | [AC_LANG_PROGRAM( | |
28 | [[]], | |
29 | [[int x;]])], | |
30 | [openafs_cv_gcc_needs_no_strict_aliasing=yes], | |
31 | [openafs_cv_gcc_needs_no_strict_aliasing=no]) | |
32 | CFLAGS="$save_CFLAGS" | |
33 | ]) | |
34 | AS_IF([test x$openafs_cv_gcc_needs_no_strict_aliasing = xyes], | |
35 | [LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -fno-strict-aliasing"]) | |
36 | ]) | |
37 | ||
38 | AC_DEFUN([OPENAFS_GCC_NEEDS_NO_STRENGTH_REDUCE], [ | |
39 | AC_CACHE_CHECK([if $CC needs -fno-strength-reduce], | |
40 | [openafs_cv_gcc_needs_no_strength_reduce], | |
41 | [save_CFLAGS="$CFLAGS" | |
42 | CFLAGS="-fno-strength-reduce" | |
43 | AC_COMPILE_IFELSE( | |
44 | [AC_LANG_PROGRAM( | |
45 | [[]], | |
46 | [[int x;]])], | |
47 | [openafs_cv_gcc_needs_no_strength_reduce=yes], | |
48 | [openafs_cv_gcc_needs_no_strength_reduce=no]) | |
49 | CFLAGS="$save_CFLAGS" | |
50 | ]) | |
51 | AS_IF([test x$openafs_cv_gcc_needs_no_strength_reduce = xyes], | |
52 | [LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -fno-strength-reduce"]) | |
53 | ]) | |
54 | ||
55 | AC_DEFUN([OPENAFS_GCC_SUPPORTS_NO_COMMON], [ | |
56 | AC_CACHE_CHECK([if $CC supports -fno-common], | |
57 | [openafs_cv_gcc_supports_no_common], | |
58 | [save_CFLAGS="$CFLAGS" | |
59 | CFLAGS="-fno-common" | |
60 | AC_COMPILE_IFELSE( | |
61 | [AC_LANG_PROGRAM( | |
62 | [[]], | |
63 | [[int x;]])], | |
64 | [openafs_cv_gcc_supports_no_common=yes], | |
65 | [openafs_cv_gcc_supports_no_common=no]) | |
66 | ||
67 | CFLAGS="$save_CFLAGS" | |
68 | ]) | |
69 | AS_IF([test x$openafs_cv_gcc_supports_no_common = xyes], | |
70 | [LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -fno-common"]) | |
71 | ]) | |
72 | ||
73 | AC_DEFUN([OPENAFS_GCC_SUPPORTS_PIPE], [ | |
74 | AC_CACHE_CHECK([if $CC supports -pipe], | |
75 | [openafs_cv_gcc_supports_pipe], | |
76 | [save_CFLAGS="$CFLAGS" | |
77 | CFLAGS="-pipe" | |
78 | AC_COMPILE_IFELSE( | |
79 | [AC_LANG_PROGRAM( | |
80 | [[]], | |
81 | [[int x;]])], | |
82 | [openafs_cv_gcc_supports_pipe=yes], | |
83 | [openafs_cv_gcc_supports_pipe=no]) | |
84 | CFLAGS="$save_CFLAGS" | |
85 | ]) | |
86 | AS_IF([test x$openafs_cv_gcc_supports_pipe = xyes], | |
87 | [LINUX_GCC_KOPTS="$LINUX_GCC_KOPTS -pipe"]) | |
88 | ]) |