1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
# -*- shell-script -*-
#
# This file is part of the HDF4 build script. It is processed shortly
# after configure starts and defines, among other things, flags for
# the various compilation modes.
# Choosing C and Fortran Compilers
# --------------------------------------
#
# The user should be able to specify the compiler by setting the CC
# and F77 environment variables to the name of the compiler and any
# switches it requires for proper operation. If CC is unset then this
# script may set it. If CC is unset by time this script completes then
# configure will try `gcc' and `cc' in that order (perhaps some others
# too).
#
# Note: Code later in this file may depend on the value of $CC_BASENAME
# in order to distinguish between different compilers when
# deciding which compiler command-line switches to use. This
# variable is set based on the incoming value of $CC and is only
# used within this file.
if test "X-$CC" = "X-"; then
CC="/some/default/compiler/named/foo -ansi"
CC_BASENAME=foo
fi
if test "X-$F77" = "X-"; then
F77="/some/default/compiler/named/foo -ansi"
F77_BASENAME=foo
fi
# C and Fortran Compiler and Preprocessor Flags
# ---------------------------------------------------
#
# - Flags that end with `_CFLAGS' are always passed to the C compiler.
# - Flags that end with `_FFLAGS' are always passed to the Fortran
# compiler.
# - Flags that end with `_CPPFLAGS' are passed to the C compiler
# when compiling but not when linking.
#
# DEBUG_CFLAGS
# DEBUG_FFLAGS
# DEBUG_CPPFLAGS - Flags to pass to the compiler to create a
# library suitable for use with debugging
# tools. Usually this list will exclude
# optimization switches (like `-O') and include
# switches that turn on symbolic debugging support
# (like `-g').
#
# PROD_CFLAGS
# PROD_FFLAGS
# PROD_CPPFLAGS - Flags to pass to the compiler to create a
# production version of the library. These
# usually exclude symbolic debugging switches (like
# `-g') and include optimization switches (like
# `-O').
#
# PROFILE_CFLAGS
# PROFILE_FFLAGS
# PROFILE_CPPFLAGS- Flags to pass to the compiler to create a
# library suitable for performance testing (like
# `-pg'). This may or may not include debugging or
# production flags.
#
# FFLAGS
# CFLAGS - Flags can be added to these variable which
# might already be partially initialized. These
# flags will always be passed to the compiler and
# should include switches to turn on full warnings.
#
# WARNING: flags do not have to be added to the CFLAGS
# or FFLAGS variable if the compiler is the GNU gcc
# and g77 compiler.
#
# FFLAGS and CFLAGS should contain *something* or else
# configure will probably add `-g'. For most systems
# this isn't a problem but some systems will disable
# optimizations in favor of the `-g'. The configure
# script will remove the `-g' flag in production mode
# only.
#
# These flags should be set according to the compiler being used.
# There are two ways to check the compiler. You can try using `-v' or
# `--version' to see if the compiler will print a version string. You
# can use the value of $FOO_BASENAME which is the base name of the
# first word in $FOO, where FOO is either CC or F77 (note that the
# value of CC may have changed above).
case $CC_BASENAME in
gcc)
CFLAGS="$CFLAGS"
DEBUG_CFLAGS="-g -fverbose-asm"
DEBUG_CPPFLAGS=
PROD_CFLAGS="-O3 -fomit-frame-pointer"
PROD_CPPFLAGS=
PROFILE_CFLAGS="-pg"
PROFILE_CPPFLAGS=
;;
*)
CFLAGS="$CFLAGS -ansi"
DEBUG_CFLAGS="-g"
DEBUG_CPPFLAGS=
PROD_CFLAGS="-O"
PROD_CPPFLAGS=
PROFILE_CFLAGS="-pg"
PROFILE_CPPFLAGS=
;;
esac
case $F77_BASENAME in
g77)
FFLAGS="$FFLAGS -Wsign-compare"
DEBUG_FFLAGS="-g"
PROD_FFLAGS="-O3 -fomit-frame-pointer"
PROFILE_FFLAGS="-pg"
;;
*)
FFLAGS="$FFLAGS -ansi"
DEBUG_FFLAGS="-g"
PROD_FFLAGS="-O"
PROFILE_FFLAGS="-pg"
;;
esac
# Overriding Configure Tests
# --------------------------
#
# Values for overriding configuration tests when cross compiling.
# Set this to `yes' or `no' depending on whether the target is big
# endian or little endian.
#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
|
