Merge from emacs-24; up to 2014-05-15T16:55:18Z!jan.h.d@swipnet.se

[bpt/emacs.git] / autogen.sh

diff --git a/autogen.sh b/autogen.sh
index 84230b5..32f86ab 100755 (executable)
--- a/autogen.sh
+++ b/autogen.sh
@@ -195,7 +195,7 @@ this script.
 If you know that the required versions are in your PATH, but this
 script has made an error, then you can simply run
 
-autoreconf -i -I m4
+autoreconf -fi -I m4
 
 instead of this script.
 
@@ -205,18 +205,108 @@ EOF
     exit 1
 fi
 
-echo "Your system has the required tools, running autoreconf..."
+# If automake is installed in a nonstandard location, find the standard
+# location if possible and append it to ACLOCAL_PATH.  That way, it will
+# find the pkg.m4 that is installed in the standard location.
+echo "Checking for pkg.m4..."
+AUTORECONF_ENV=
+env_space=
+ac_dir=`aclocal --print-ac-dir` || {
+    cat <<EOF
+There was a problem running 'aclocal --print-ac-dir'.
+The aclocal program is part of automake.
+Please check your automake installation.
+EOF
+
+    exit 1
+}
+
+test -n "$ac_dir" && test -r "$ac_dir/pkg.m4" || {
+
+  # Maybe ACLOCAL_PATH is already set-up.
+  if test -n "$ACLOCAL_PATH"; then
+    oIFS=$IFS
+    IFS=:
+    for dir in $ACLOCAL_PATH; do
+      if test -r "$dir/pkg.m4"; then
+       AUTORECONF_ENV="ACLOCAL_PATH='$ACLOCAL_PATH'"
+        env_space=' '
+       break
+      fi
+    done
+    IFS=$oIFS
+  fi
+
+  if test -z "$AUTORECONF_ENV"; then
+    oIFS=$IFS
+    IFS=:
+    before_first_aclocal=true
+    for dir in $PATH; do
+      if test -x "$dir/aclocal"; then
+        if $before_first_aclocal; then
+          before_first_aclocal=false
+        elif ac_dir=`"$dir/aclocal" --print-ac-dir` && test -r "$ac_dir/pkg.m4"
+        then
+          case $ACLOCAL_PATH in
+            '') ACLOCAL_PATH=$ac_dir;;
+            ?*) ACLOCAL_PATH=$ACLOCAL_PATH:$ac_dir;;
+          esac
+          export ACLOCAL_PATH
+          AUTORECONF_ENV="ACLOCAL_PATH='$ACLOCAL_PATH'"
+          env_space=' '
+          break
+        fi
+      fi
+    done
+    IFS=$oIFS
+  fi
+
+  ## OK, maybe pkg-config is in a weird place (eg on hydra).
+  if test -z "$AUTORECONF_ENV"; then
+    oIFS=$IFS
+    IFS=:
+    for dir in $PATH; do
+      if test -x "$dir/pkg-config"; then
+        ac_dir=`echo "$dir" | sed 's|bin$|share/aclocal|'`
+        if test -r "$ac_dir/pkg.m4"; then
+          case $ACLOCAL_PATH in
+            '') ACLOCAL_PATH=$ac_dir;;
+            ?*) ACLOCAL_PATH=$ACLOCAL_PATH:$ac_dir;;
+          esac
+          export ACLOCAL_PATH
+          AUTORECONF_ENV="ACLOCAL_PATH='$ACLOCAL_PATH'"
+          env_space=' '
+          break
+        fi
+      fi
+    done
+    IFS=$oIFS
+  fi
+
+  if test -z "$AUTORECONF_ENV"; then
+    cat <<EOF
+The version of aclocal that you are using cannot find the pkg.m4 file that
+pkg-config provides.  If it is installed in some unusual directory /FOO/BAR,
+set ACLOCAL_PATH='/FOO/BAR' in the environment and run this script again.
+EOF
+    exit 1
+  fi
+}
+echo ok
+
+echo 'Your system has the required tools.'
+echo "Running \"$AUTORECONF_ENV${env_space}autoreconf -fi -I m4\" ..."
 
 
 ## Let autoreconf figure out what, if anything, needs doing.
 ## Use autoreconf's -f option in case autoreconf itself has changed.
-autoreconf -f -i -I m4 || exit $?
+autoreconf -fi -I m4 || exit $?
 
 ## Create a timestamp, so that './autogen.sh; make' doesn't
 ## cause 'make' to needlessly run 'autoheader'.
 echo timestamp > src/stamp-h.in || exit
 
-echo "You can now run \`./configure'."
+echo "You can now run \"./configure$env_space$AUTORECONF_ENV\"."
 
 exit 0