Merge Trond.
[m6w6/libmemcached] / m4 / pandora_optimize.m4
1 dnl Copyright (C) 2009 Sun Microsystems
2 dnl This file is free software; Sun Microsystems
3 dnl gives unlimited permission to copy and/or distribute it,
4 dnl with or without modifications, as long as this notice is preserved.
5
6 AC_DEFUN([PANDORA_OPTIMIZE],[
7 dnl Build optimized or debug version ?
8 dnl First check for gcc and g++
9 AS_IF([test "$GCC" = "yes" -a "$INTELCC" = "no"],[
10
11 dnl The following is required for portable results of floating point
12 dnl calculations on PowerPC. The same must also be done for IA-64, but
13 dnl this options is missing in the IA-64 gcc backend.
14 case "$target_cpu" in
15 *ppc* | *powerpc*)
16 AM_CFLAGS="-mno-fused-madd ${AM_CFLAGS}"
17 AM_CXXFLAGS="-mno-fused-madd ${AM_CXXFLAGS}"
18 ;;
19 esac
20
21 dnl Once we can use a modern autoconf, we can replace the std=gnu99 here
22 dnl with using AC_CC_STD_C99 above
23 CC="${CC} -std=gnu99"
24
25 AM_CPPFLAGS="-ggdb3 ${AM_CPPFLAGS}"
26
27 DEBUG_CFLAGS="-O0"
28 DEBUG_CXXFLAGS="-O0"
29
30 OPTIMIZE_CFLAGS="-O3"
31 OPTIMIZE_CXXFLAGS="-O3"
32 ])
33 AS_IF([test "$INTELCC" = "yes"],[
34 dnl Once we can use a modern autoconf, we can replace the std=gnu99 here
35 dnl with using AC_CC_STD_C99 above
36 CC="${CC} -std=c99"
37
38 AM_CPPFLAGS="-g ${AM_CPPFLAGS}"
39
40 DEBUG_CFLAGS="-O0"
41 DEBUG_CXXFLAGS="-O0"
42
43 OPTIMIZE_CFLAGS="-xHOST -O3 -no-prec-div -static"
44 OPTIMIZE_CXXFLAGS="${OPTIMIZE_CFLAGS}"
45
46 ])
47 AS_IF([test "$SUNCC" = "yes"],[
48 dnl Once we can use a modern autoconf, we can replace the -xc99=all here
49 dnl with using AC_CC_STD_C99 above
50 CC="${CC} -xc99=all"
51 CXX="${CXX} -xlang=c99"
52
53 AM_CFLAGS="-g -mt -xstrconst -Xa ${AM_CFLAGS}"
54 AM_CXXFLAGS="-mt -compat=5 -library=stlport4 -template=no%extdef ${AM_CXXFLAGS}"
55
56 DEBUG_CXXFLAGS="-g"
57
58 dnl TODO: Make a test for -xO4 usability here
59 OPTIMIZE_FLAGS="-xO3 -xlibmil -xdepend -xbuiltin"
60 OPTIMIZE_CFLAGS="${OPTIMIZE_FLAGS}"
61 OPTIMIZE_CXXFLAGS="-g0 ${OPTIMIZE_FLAGS}"
62
63 ])
64
65 AC_ARG_WITH([debug],
66 [AS_HELP_STRING([--with-debug],
67 [Add debug code/turns off optimizations (yes|no) @<:@default=no@:>@])],
68 [with_debug=$withval],
69 [with_debug=no])
70 AS_IF([test "$with_debug" = "yes"],[
71 # Debugging. No optimization.
72 AM_CFLAGS="${AM_CFLAGS} ${DEBUG_CFLAGS} -DDEBUG"
73 AM_CXXFLAGS="${AM_CXXFLAGS} ${DEBUG_CXXFLAGS} -DDEBUG"
74 ],[
75 # Optimized version. No debug
76 AM_CFLAGS="${AM_CFLAGS} ${OPTIMIZE_CFLAGS}"
77 AM_CXXFLAGS="${AM_CXXFLAGS} ${OPTIMIZE_CXXFLAGS}"
78 ])
79 ])