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authorK. Richard Pixley <rich@cygnus>1992-02-06 01:21:44 +0000
committerK. Richard Pixley <rich@cygnus>1992-02-06 01:21:44 +0000
commita98bbe58109b86db348e107259d5152baa18199f (patch)
treef8ad80bb727c38d7217e1d0daf1dc43371402384 /configure
parenteabe8479cff6a58ffe338a68535b79d3cf6ab95d (diff)
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Converting "[ -n" and "[ -z" into case statements looks like a small
time penalty for modern shells which have "[" builtin. I've elected to take it anyway as a compensation for older, slower shells.
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure220
1 files changed, 138 insertions, 82 deletions
diff --git a/configure b/configure
index a9d54f2..16d87a5 100755
--- a/configure
+++ b/configure
@@ -113,13 +113,16 @@ do
elif [ -n "${next_srcdir}" ] ; then srcdir=${arg} ; next_srcdir=
elif [ -n "${next_target}" ] ; then
next_target=
- if [ -z "${targets}" ] ; then
+ case "${targets}" in
+ "")
newtargets="${targets} ${arg}"
targets="${newtargets}"
- else
+ ;;
+ *)
echo '***' Can only configure for one target at a time.
fatal=yes
- fi
+ ;;
+ esac
elif [ -n "${next_tmpdir}" ] ; then
next_tmpdir=
tmpdiroption="--tmpdir=${arg}"
@@ -141,13 +144,16 @@ do
fatal=true
;;
-host=* | --host=* | --hos=* | --ho=*)
- if [ -z "${hosts}" ] ; then
+ case "${hosts}" in
+ "")
newhosts="${hosts} `echo ${arg} | sed 's/^[-a-z]*=//'`"
hosts="${newhosts}"
- else
+ ;;
+ *)
echo '***' Can only configure for one host at a time.
fatal=yes
- fi
+ ;;
+ esac
;;
-nfp | --nf*)
floating_point=no
@@ -182,13 +188,16 @@ do
next_srcdir=yes
;;
-target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=*)
- if [ -z "${targets}" ] ; then
+ case "${targets}" in
+ "")
newtargets="${targets} `echo ${arg} | sed 's/^[-a-z]*=//'`"
targets="${newtargets}"
- else
+ ;;
+ *)
echo '***' Can only configure for one target at a time.
fatal=yes
- fi
+ ;;
+ esac
;;
-target | --target | --targe | --targ | --tar | --ta)
next_target=yes
@@ -215,20 +224,24 @@ do
fatal=true
;;
*)
- if [ -z "${undefs}" ] ; then
+ case "${undefs}" in
+ "")
newundefs="${undefs} ${arg}"
undefs=${newundefs}
- else
+ ;;
+ *)
echo '***' Can only configure for one host and one target at a time.
fatal=yes
- fi
+ ;;
+ esac
;;
esac
fi
done
# process host and target
-if [ -z "${fatal}" ] ; then
+case "${fatal}" in
+"")
# # Complain if an arg is missing
# if [ -z "${hosts}" ] ; then
# (echo ;
@@ -252,19 +265,24 @@ if [ -z "${fatal}" ] ; then
echo '***' You must tell me for which host you want to configure.
fatal=yes
else
- if [ -z "${hosts}" ] ; then
- hosts=${undefs}
- fi
+ case "${hosts}" in
+ "") hosts=${undefs} ;;
+ *) ;;
+ esac
- if [ -z "${targets}" ] ; then
- if [ -n "${undefs}" ] ; then
- targets=${undefs}
- else
- targets=${hosts}
- fi
- fi
+ case "${targets}" in
+ "")
+ case "${undefs}" in
+ "") targets=${hosts} ;;
+ *) targets=${undefs} ;;
+ esac
+ ;;
+ *) ;;
+ esac
fi
-fi
+ ;;
+*) ;;
+esac
if [ -n "${fatal}" -o "${hosts}" = "help" ] ; then
(echo "Usage: configure HOST" ;
@@ -302,30 +320,40 @@ else
exit 1
fi
-if [ -z "${srcdir}" ] ; then
+case "${srcdir}" in
+"")
if [ -r configure.in ] ; then
srcdir=.
else
echo '***' "Can't find configure.in. Try using -srcdir=some_dir"
exit 1
fi
-fi
+ ;;
+*) ;;
+esac
### break up ${srcdir}/configure.in.
-if [ -z "`grep '^# per\-host:' ${srcdir}/configure.in`" ] ; then
+case "`grep '^# per\-host:' ${srcdir}/configure.in`" in
+"")
echo '***' ${srcdir}/configure.in has no "per-host:" line. 1>&2
exit 1
-fi
+ ;;
+*) ;;
+esac
-if [ -z "`grep '^# per\-target:' ${srcdir}/configure.in`" ] ; then
+case "`grep '^# per\-target:' ${srcdir}/configure.in`" in
+"")
echo '***' ${srcdir}/configure.in has no "per-target:" line. 1>&2
exit 1
-fi
+ ;;
+*) ;;
+esac
-if [ -z "${TMPDIR}" ] ; then
- TMPDIR=/tmp ; export TMPDIR
-fi
+case "${TMPDIR}" in
+"") TMPDIR=/tmp ; export TMPDIR ;;
+*) ;;
+esac
# keep this filename short for &%*%$*# 14 char file names
tmpfile=${TMPDIR}/cONf$$
@@ -348,10 +376,13 @@ fi
. ${tmpfile}.com
# some sanity checks on configure.in
-if [ -z "${srctrigger}" ] ; then
+case "${srctrigger}" in
+"")
echo '***' srctrigger not set in ${PWD}/configure.in.
exit 1
-fi
+ ;;
+*) ;;
+esac
for host in ${hosts} ; do
# Default other arg
@@ -391,34 +422,35 @@ for host in ${hosts} ; do
. ${tmpfile}.tgt
- if [ "${host_alias}" = "${target_alias}" ] ; then
- subdirname=H-${host_alias}
- else
- subdirname=X-${host_alias}-${target_alias}
- fi
+ case "${host_alias}" in
+ "${target_alias}") subdirname=H-${host_alias} ;;
+ *) subdirname=X-${host_alias}-${target_alias} ;;
+ esac
- if [ -n "${namesubdir}" ] ; then
- subdirname=${namesubdir}
- fi
+ case "${namesubdir}" in
+ "") ;;
+ *) subdirname=${namesubdir} ;;
+ esac
- if [ -n "${removing}" ] ; then
- rm -f ${Makefile} config.status ${links}
- else
+ case "${removing}" in
+ "")
# Find the source files, if location was not specified.
- if [ -z "${srcdir}" ] ; then
+ case "${srcdir}" in
+ "")
srcdirdefaulted=1
srcdir=.
if [ ! -r ${srctrigger} ] ; then
srcdir=..
fi
- fi
+ ;;
+ *) ;;
+ esac
if [ ! -r ${srcdir}/${srctrigger} ] ; then
- if [ -z "${srcdirdefaulted}" ] ; then
- echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/${srcdir}" 1>&2
- else
- echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/. or ${PWD}/.." 1>&2
- fi
+ case "${srcdirdefaulted}" in
+ "") echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/${srcdir}" 1>&2 ;;
+ *) echo '***' "${progname}: Can't find ${srcname} sources in ${PWD}/. or ${PWD}/.." 1>&2 ;;
+ esac
echo '***' \(At least ${srctrigger} is missing.\) 1>&2
exit 1
@@ -449,9 +481,10 @@ for host in ${hosts} ; do
exit 1
fi
- if [ -n "${verbose}" ] ; then
- echo "Linked \"${link}\" to \"${srcdir}/${file}\"."
- fi
+ case "${verbose}" in
+ "") ;;
+ *) echo "Linked \"${link}\" to \"${srcdir}/${file}\"." ;;
+ esac
done
# Create a .gdbinit file which runs the one in srcdir
@@ -479,12 +512,13 @@ for host in ${hosts} ; do
# template is stable, these should be optimized. xoxorich.
# Define macro CROSS_COMPILE in compilation if this is a cross-compiler.
- if [ "${host}" != "${target}" ] ; then
+ case "${host}" in
+ "${target}") echo "ALL=all.internal" > ${Makefile} ;;
+ *)
echo "CROSS=-DCROSS_COMPILE" > ${Makefile}
echo "ALL=all.cross" >> ${Makefile}
- else
- echo "ALL=all.internal" > ${Makefile}
- fi
+ ;;
+ esac
# set target, host, VPATH
echo "host_alias = ${host_alias}" >> ${Makefile}
@@ -506,7 +540,9 @@ for host in ${hosts} ; do
cat ${srcdir}/${Makefile_in} >> ${Makefile}
# Conditionalize the makefile for this site.
- if [ -n "${site}" ] ; then
+ case "${site}" in
+ "") ;;
+ *)
site_makefile_frag=config/ms-${site}
if [ -f ${srcdir}/${site_makefile_frag} ] ; then
@@ -517,7 +553,8 @@ for host in ${hosts} ; do
cat ${Makefile} >> Makefile.tem
fi
mv Makefile.tem ${Makefile}
- fi
+ ;;
+ esac
# Conditionalize the makefile for this host.
if [ -f ${srcdir}/${host_makefile_frag} ] ; then
@@ -544,16 +581,22 @@ for host in ${hosts} ; do
mv Makefile.tem ${Makefile}
# set prefix
- if [ -n "${prefix}" ] ; then
+ case "${prefix}" in
+ "") ;;
+ *)
sed "s:^prefix[ ]*=.*$:prefix = ${prefix}:" ${Makefile} > Makefile.tem
mv Makefile.tem ${Makefile}
- fi
+ ;;
+ esac
# set datadir
- if [ -n "${datadir}" ] ; then
+ case "${datadir}" in
+ "") ;;
+ *)
sed "s:^datadir[ ]*=.*$:datadir = ${datadir}:" ${Makefile} > Makefile.tem
mv Makefile.tem ${Makefile}
- fi
+ ;;
+ esac
# reset SUBDIRS
sed "s:^SUBDIRS[ ]*=.*$:SUBDIRS = ${configdirs}:" ${Makefile} > Makefile.tem
@@ -579,10 +622,14 @@ for host in ${hosts} ; do
if [ -f ${srcdir}/${target_makefile_frag} ] ; then
using="${using} and \"${target_makefile_frag}\""
fi
- if [ -n "${site}" -a \
- -f ${srcdir}/${site_makefile_frag} ] ; then
- using="${using} and \"${site_makefile_frag}\""
- fi
+ case "${site}" in
+ "") ;;
+ *)
+ if [ -f ${srcdir}/${site_makefile_frag} ] ; then
+ using="${using} and \"${site_makefile_frag}\""
+ fi
+ ;;
+ esac
using=`echo "${using}" | sed 's/and/using/'`
using="Created \"${Makefile}\" in ${PWD}${using}."
@@ -597,9 +644,10 @@ for host in ${hosts} ; do
# the same configuration. Used in Makefiles to rebuild
# Makefiles.
- if [ -z "${norecursion}" ] ; then
- arguments="${arguments} -norecursion"
- fi
+ case "${norecursion}" in
+ "") arguments="${arguments} -norecursion" ;;
+ *) ;;
+ esac
echo "#!/bin/sh
# ${NO_EDIT}
@@ -607,22 +655,27 @@ for host in ${hosts} ; do
${progname}" ${arguments} "
# ${using}" > config.status
chmod a+x config.status
-
- fi
+ ;;
+ *) rm -f ${Makefile} config.status ${links} ;;
+ esac
# If there are subdirectories, then recur.
if [ -z "${norecursion}" -a -n "${configdirs}" ] ; then
for configdir in ${configdirs} ; do
- if [ -n "${verbose}" ] ; then
- echo Configuring ${configdir}...
- fi
+ case "${verbose}" in
+ "") ;;
+ *) echo Configuring ${configdir}... ;;
+ esac
if [ -d ${srcdir}/${configdir} ] ; then
- if [ "${srcdir}" != "." ] ; then
+ case "${srcdir}" in
+ ".")
if [ ! -d ./${configdir} ] ; then
mkdir ./${configdir}
fi
- fi
+ ;;
+ *) ;;
+ esac
POPDIR=${PWD}
cd ${configdir}
@@ -651,8 +704,11 @@ ${progname}" ${arguments} "
fi
cd ${POPDIR}
- elif [ -n "${verbose}" ] ; then
- echo Warning: source directory \"${srcdir}/${configdir}\" is missing.
+ else
+ case "${verbose}" in
+ "") ;;
+ *) echo Warning: source directory \"${srcdir}/${configdir}\" is missing. ;;
+ esac
fi
done
fi