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-rwxr-xr-xsysinfo/host/host.sh82
1 files changed, 82 insertions, 0 deletions
diff --git a/sysinfo/host/host.sh b/sysinfo/host/host.sh
new file mode 100755
index 0000000..50186e7
--- /dev/null
+++ b/sysinfo/host/host.sh
@@ -0,0 +1,82 @@
+#!/bin/sh
+
+error_msg()
+{
+ echo $@ >&2
+}
+
+host_test()
+{
+ mb_hdrdir=$(pwd)/build
+ mkdir -p $mb_hdrdir || exit 2
+
+ if [ x"$mb_compiler" = x ]; then
+ echo "config error: compiler not set."
+ exit 2
+ fi
+
+ "$mb_compiler" -dM -E - < /dev/null > /dev/null && return 0
+
+ error_msg "config error: invalid compiler."
+ exit 2
+}
+
+host_endian_h()
+{
+ mb_header='endian.h'
+ rm -f "$mb_hdrdir"/$mb_header
+
+ # portable
+ "$mb_compiler" $mb_cflags \
+ --include=$mb_header -E - < /dev/null > /dev/null 2>/dev/null \
+ && return 0
+
+ # non-portable
+ mb_hosthdr=
+
+ [ -z $mb_hosthdr ] && "$mb_compiler" $mb_cflags \
+ --include='sys/'$mb_header -E - < /dev/null > /dev/null 2>/dev/null \
+ && mb_hosthdr='sys/'$mb_header
+
+ [ -z $mb_hosthdr ] && "$mb_compiler" $mb_cflags \
+ --include='machine/'$mb_header -E - < /dev/null > /dev/null 2>/dev/null \
+ && mb_hosthdr='machine/'$mb_header
+
+ if [ x"$mb_hosthdr" = x ]; then
+ error_msg "config error: could not find an alternate <$mb_header>."
+ exit 2
+ fi
+
+ printf "#include <%s>\\n" $mb_hosthdr > "$mb_hdrdir"/$mb_header || exit 2
+}
+
+
+# one: args
+for arg ; do
+ case "$arg" in
+ --help) usage
+ ;;
+ --compiler=*)
+ mb_compiler=${arg#*=}
+ ;;
+ --cflags=*)
+ mb_cflags=${arg#*=}
+ ;;
+ *)
+ error_msg ${arg#}: "unsupported config argument."
+ exit 2
+ ;;
+ esac
+done
+
+
+# two: test
+host_test
+
+
+# three: headers
+host_endian_h
+
+
+# all done
+exit 0