Place the configure script at the top of the source tree.

This is important to limit user confusion. In a use case as
follows:

   cd sac2c
   ./configure --prefix=../inst

The intention of the user is to set the prefix to sac2c/../inst.
However prior to this patch "configure" is really run from sac2c/setup,
so the argument really sets the prefix to sac2c/setup/../inst, which is
confusing.

This patch fixes that issue by making sure the real "configure" script
resides at the top of the source tree. The other aspects of the
configuration remain unchanged.

.gitignore

@@ -8,9 +8,9 @@ src/bin/*
 .revision.txt
 include/sac.h
 sac2crc
-setup/autom4te.cache/
-setup/config.log
-setup/config.status
+autom4te.cache/
+config.log
+config.status
 setup/sac2crc
 src/doc/ast.html
 src/doc/ast.png

Makefile

@@ -229,8 +229,7 @@ tools: checks
 #
 
 config:
-	@ cd setup && \
-	  autoreconf -v -f -i -I config
+	autoreconf -v -f -i -I setup/config
 
 ###############################################################################
 #

setup/configure.ac → configure.ac

@@ -8,15 +8,15 @@ dnl parameters: package name, version, where to send bugreports
 AC_INIT(sac2c, git, info@sac-home.org)
 
 dnl set source directory and scripting directory
-AC_CONFIG_SRCDIR(.)
-AC_CONFIG_AUX_DIR(./config)
+AC_CONFIG_SRCDIR([setup])
+AC_CONFIG_AUX_DIR([setup/config])
 
 dnl we use C as our compiler language
 AC_LANG(C)
 
 dnl and which files to create
-AC_CONFIG_FILES(../src/makefiles/config.mkf sac2crc)
-AC_CONFIG_HEADER(../src/include/config.h)
+AC_CONFIG_FILES([src/makefiles/config.mkf setup/sac2crc])
+AC_CONFIG_HEADER([src/include/config.h])
 
 dnl check for host type
 AC_CANONICAL_BUILD
@@ -246,10 +246,10 @@ AC_SUBST_FILE([RCSUN])
 AC_SUBST_FILE([RCX86])
 AC_SUBST_FILE([RCALPHA])
 AC_SUBST_FILE([RCMAC])
-RCSUN=./sac2crc.SUN
-RCX86=./sac2crc.X86
-RCALPHA=./sac2crc.ALPHA
-RCMAC=./sac2crc.MAC
+RCSUN=setup/sac2crc.SUN
+RCX86=setup/sac2crc.X86
+RCALPHA=setup/sac2crc.ALPHA
+RCMAC=setup/sac2crc.MAC
 
 
 # generate specific flags for known os

src/makefiles/check.mkf

@@ -18,7 +18,7 @@ CONFIGURED   := $(PROJECT_ROOT)/src/makefiles/config.mkf \
 
 AUTOHEADERED := $(PROJECT_ROOT)/src/include/config.h.in
 
-AUTOCONFED   := $(PROJECT_ROOT)/setup/configure
+AUTOCONFED   := $(PROJECT_ROOT)/configure
 
 
 #######################################################################################