3 # This shell script handles all host based configuration for libstdc++.
4 # It sets various shell variables based on the the host and the
5 # configuration options. You can modify this shell script without needing
6 # to rerun autoconf/aclocal/etc. This file is "sourced" not executed.
8 # You should read docs/html/17_intro/porting.* to make sense of this file.
11 # It uses the following shell variables as set by config.guess:
12 # host The configuration host (full CPU-vendor-OS triplet)
13 # host_cpu The configuration host CPU
14 # host_os The configuration host OS
17 # It sets the following shell variables:
19 # cpu_include_dir CPU-specific directory, defaults to cpu/generic
20 # if cpu/host_cpu doesn't exist. This is
21 # used to set atomicity_include_dir.
23 # os_include_dir OS-specific directory, defaults to os/generic.
25 # c_model the "C" header model, defaults to c_std.
27 # c_compatibility if "C" compatibility headers are necessary,
30 # abi_baseline_pair directory name for ABI compat testing,
31 # defaults to host_cpu-host_os (as per config.guess)
33 # atomicity_include_dir location of atomicity.h,
34 # defaults to cpu_include_dir
36 # It possibly modifies the following variables:
38 # OPT_LDFLAGS extra flags to pass when linking the library, of
40 # (defaults to empty in acinclude.m4)
42 # port_specific_symbol_files
43 # whitespace-seperated list of files containing
44 # additional symbols to export from the shared
45 # library, when symbol versioning is in use
48 # If the defaults will not work for your platform, you need only change the
49 # variables that won't work, i.e., you do not need to explicitly set a
50 # working variable to its default. Most hosts only need to change the two
51 # *_include_dir variables.
55 # Try to guess a default cpu_include_dir based on the name of the CPU. We
56 # cannot do this for os_include_dir; there are too many portable operating
57 # systems out there. :-)
61 # HOST-SPECIFIC OVERRIDES
62 # Set any CPU-dependent bits.
63 # Here we override defaults and catch more general cases due to naming
64 # conventions (e.g., chip_name* to catch all variants).
66 # THIS TABLE IS SORTED. KEEP IT THAT WAY.
78 # NB: cpu/mips/atomicity.h needs MIPS II or above.
79 # Of course, there is no sane way to test for this, no ABI macro,
80 # and no consistent host_cpu name differentiation. Therefore, only
81 # use it where it is known to be safe, ie it runs linux (see below).
97 if test -d ${glibcxx_srcdir}/config/cpu/${host_cpu}; then
105 # Now look for the file(s) usually tied to a CPU model, and make
106 # default choices for those if they haven't been explicitly set
108 cpu_include_dir="cpu/${try_cpu}"
109 atomicity_include_dir=$cpu_include_dir
110 abi_baseline_pair=${try_cpu}-${host_os}
113 # Set any OS-dependent bits.
114 # Set the os_include_dir.
115 # Set c_model, c_compatibility here.
116 # If atomic ops and/or numeric limits are OS-specific rather than
117 # CPU-specifc, set those here too.
118 # THIS TABLE IS SORTED. KEEP IT THAT WAY.
120 aix4.[3456789]* | aix[56789]*)
121 # We set os_include_dir to os/aix only on AIX 4.3 and newer, but
122 # os/aix/atomicity.h works on earlier versions of AIX 4.*, so we
123 # explicitly duplicate the directory for 4.[<3].
124 os_include_dir="os/aix"
125 atomicity_include_dir="os/aix"
129 os_include_dir="os/generic"
130 atomicity_include_dir="os/aix"
133 os_include_dir="os/generic"
134 atomicity_include_dir="cpu/generic"
137 # Plain BSD attempts to share FreeBSD files.
138 os_include_dir="os/bsd/freebsd"
141 os_include_dir="os/newlib"
143 *djgpp*) # leading * picks up "msdosdjgpp"
144 os_include_dir="os/djgpp"
147 os_include_dir="os/bsd/freebsd"
149 gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
150 os_include_dir="os/gnu-linux"
153 os_include_dir="os/hpux"
155 irix[1-6] | irix[1-5].* | irix6.[0-4]*)
156 # This is known to work on at least IRIX 5.2 and 6.3.
157 os_include_dir="os/irix/irix5.2"
158 atomicity_include_dir=$os_include_dir
161 os_include_dir="os/irix/irix6.5"
162 atomicity_include_dir=$os_include_dir
165 os_include_dir="os/mingw32"
168 os_include_dir="os/bsd/netbsd"
171 os_include_dir="os/qnx/qnx6.1"
175 # This too-vague configuration does not provide enough information
176 # to select a ctype include, and thus os_include_dir is a crap shoot.
177 echo "Please specify the full version of Solaris, ie. solaris2.9 " 1>&2
180 solaris2.5 | solaris2.5.[0-9])
181 os_include_dir="os/solaris/solaris2.5"
184 os_include_dir="os/solaris/solaris2.6"
186 solaris2.[789] | solaris2.1[0-9])
187 os_include_dir="os/solaris/solaris2.7"
190 os_include_dir="os/vxworks"
193 os_include_dir="os/windiss"
196 os_include_dir="os/generic"
201 # Set any OS-dependent and CPU-dependent bits.
202 # THIS TABLE IS SORTED. KEEP IT THAT WAY.
205 atomicity_include_dir="cpu/mips"
208 abi_baseline_pair="x86_64-linux-gnu"
211 abi_baseline_pair="alpha-freebsd5"
214 abi_baseline_pair="i386-freebsd4"
217 abi_baseline_pair="i386-freebsd5"
220 abi_baseline_pair="sparc-freebsd5"