unified build scheme: a first introduction

The "unified" build scheme revolves around small information files,
build.info, which each describe their own bit of everything that needs
to be built, using a mini-language described in Configurations/README.

The information in build.info file contain references to source files
and final result.  Object files are not mentioned at all, they are
simply from source files.  Because of this, all the *_obj items in
Configurations/*.conf are renamed to *_asm_src and the files listed
in the values are change from object files to their corresponding
source files.  For the sake of the other build schemes, Configure
generates corresponding *_obj entries in %target.

Furthermore, the "unified" build scheme supports having a build
directory tree separate from the source directry tree.

All paths in a build.info file is assumed to be relative to its
location, either within the source tree or within the build tree.

Reviewed-by: Andy Polyakov <appro@openssl.org>

1 files changed, 17 insertions, 16 deletions

diff --git a/config b/config
index 9f15553a8b..a70e3a2dd1 100755
--- a/config
+++ b/config
@@ -23,6 +23,7 @@
 SUFFIX=""
 TEST="false"
 EXE=""
+THERE=`dirname $0`
 
 # pick up any command line args to config
 for i
@@ -476,7 +477,7 @@ case "$GUESSOS" in
 	;;
   mips4-sgi-irix64)
 	echo "WARNING! If you wish to build 64-bit library, then you have to"
-	echo "         invoke './Configure irix64-mips4-$CC' *manually*."
+	echo "         invoke '$THERE/Configure irix64-mips4-$CC' *manually*."
 	if [ "$TEST" = "false" -a -t 1 ]; then
 	  echo "         You have about 5 seconds to press Ctrl-C to abort."
 	  (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -495,7 +496,7 @@ case "$GUESSOS" in
 	ISA64=`(sysctl -n hw.optional.64bitops) 2>/dev/null`
 	if [ "$ISA64" = "1" -a -z "$KERNEL_BITS" ]; then
 	    echo "WARNING! If you wish to build 64-bit library, then you have to"
-	    echo "         invoke './Configure darwin64-ppc-cc' *manually*."
+	    echo "         invoke '$THERE/Configure darwin64-ppc-cc' *manually*."
 	    if [ "$TEST" = "false" -a -t 1 ]; then
 	      echo "         You have about 5 seconds to press Ctrl-C to abort."
 	      (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -510,7 +511,7 @@ case "$GUESSOS" in
 	ISA64=`(sysctl -n hw.optional.x86_64) 2>/dev/null`
 	if [ "$ISA64" = "1" -a -z "$KERNEL_BITS" ]; then
 	    echo "WARNING! If you wish to build 64-bit library, then you have to"
-	    echo "         invoke './Configure darwin64-x86_64-cc $options' *manually*."
+	    echo "         invoke '$THERE/Configure darwin64-x86_64-cc $options' *manually*."
 	    if [ "$TEST" = "false" -a -t 1 ]; then
 	      echo "         You have about 5 seconds to press Ctrl-C to abort."
 	      # The stty technique used elsewhere doesn't work on
@@ -548,7 +549,7 @@ case "$GUESSOS" in
   ppc64-*-linux2)
 	if [ -z "$KERNEL_BITS" ]; then
 	    echo "WARNING! If you wish to build 64-bit library, then you have to"
-	    echo "         invoke './Configure linux-ppc64' *manually*."
+	    echo "         invoke '$THERE/Configure linux-ppc64' *manually*."
 	    if [ "$TEST" = "false" -a -t 1 ]; then
 		echo "         You have about 5 seconds to press Ctrl-C to abort."
 		(trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -565,7 +566,7 @@ case "$GUESSOS" in
   ppc-*-linux2) OUT="linux-ppc" ;;
   mips64*-*-linux2)
 	echo "WARNING! If you wish to build 64-bit library, then you have to"
-	echo "         invoke './Configure linux64-mips64' *manually*."
+	echo "         invoke '$THERE/Configure linux64-mips64' *manually*."
 	if [ "$TEST" = "false" -a -t 1 ]; then
 	    echo "         You have about 5 seconds to press Ctrl-C to abort."
 	    (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -582,7 +583,7 @@ case "$GUESSOS" in
   sparc64-*-linux2)
 	echo "WARNING! If you *know* that your GNU C supports 64-bit/V9 ABI"
 	echo "         and wish to build 64-bit library, then you have to"
-	echo "         invoke './Configure linux64-sparcv9' *manually*."
+	echo "         invoke '$THERE/Configure linux64-sparcv9' *manually*."
 	if [ "$TEST" = "false" -a -t 1 ]; then
 	  echo "          You have about 5 seconds to press Ctrl-C to abort."
 	  (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -659,7 +660,7 @@ case "$GUESSOS" in
 	if [ "$ISA64" != "" -a "$KERNEL_BITS" = "" ]; then
 	    if [ "$CC" = "cc" -a $CCVER -ge 50 ]; then
 		echo "WARNING! If you wish to build 64-bit library, then you have to"
-		echo "         invoke './Configure solaris64-sparcv9-cc' *manually*."
+		echo "         invoke '$THERE/Configure solaris64-sparcv9-cc' *manually*."
 		if [ "$TEST" = "false" -a -t 1 ]; then
 		  echo "         You have about 5 seconds to press Ctrl-C to abort."
 		  (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -671,7 +672,7 @@ case "$GUESSOS" in
 		# and therefore switch over to 64-bit. <appro>
 		OUT="solaris64-sparcv9-gcc"
 		echo "WARNING! If you wish to build 32-bit library, then you have to"
-		echo "         invoke './Configure solaris-sparcv9-gcc' *manually*."
+		echo "         invoke '$THERE/Configure solaris-sparcv9-gcc' *manually*."
 		if [ "$TEST" = "false" -a -t 1 ]; then
 		  echo "         You have about 5 seconds to press Ctrl-C to abort."
 		  (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -679,7 +680,7 @@ case "$GUESSOS" in
 	    elif [ "$GCC_ARCH" = "-m32" ]; then
 		echo "NOTICE! If you *know* that your GNU C supports 64-bit/V9 ABI"
 		echo "        and wish to build 64-bit library, then you have to"
-		echo "        invoke './Configure solaris64-sparcv9-gcc' *manually*."
+		echo "        invoke '$THERE/Configure solaris64-sparcv9-gcc' *manually*."
 		if [ "$TEST" = "false" -a -t 1 ]; then
 		  echo "         You have about 5 seconds to press Ctrl-C to abort."
 		  (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -760,7 +761,7 @@ case "$GUESSOS" in
 	     OUT=${OUT:-"hpux-parisc2-${CC}"}
 	     if [ $KERNEL_BITS -eq 64 -a "$CC" = "cc" ]; then
 		echo "WARNING! If you wish to build 64-bit library then you have to"
-		echo "         invoke './Configure hpux64-parisc2-cc' *manually*."
+		echo "         invoke '$THERE/Configure hpux64-parisc2-cc' *manually*."
 		if [ "$TEST" = "false" -a -t 1 ]; then
 		  echo "         You have about 5 seconds to press Ctrl-C to abort."
 		  (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -792,7 +793,7 @@ case "$GUESSOS" in
 	    OUT="aix-cc"
 	    if [ $KERNEL_BITS -eq 64 ]; then
 		echo "WARNING! If you wish to build 64-bit kit, then you have to"
-		echo "         invoke './Configure aix64-cc' *manually*."
+		echo "         invoke '$THERE/Configure aix64-cc' *manually*."
 		if [ "$TEST" = "false" -a -t 1 ]; then
 		    echo "         You have ~5 seconds to press Ctrl-C to abort."
 		    (trap "stty `stty -g`" 2 0; stty -icanon min 0 time 50; read waste) <&1
@@ -859,7 +860,7 @@ esac
 
 for i in aes bf camellia cast des dh dsa ec hmac idea md2 md5 mdc2 rc2 rc4 rc5 ripemd rsa seed sha
 do
-  if [ ! -d crypto/$i ]
+  if [ ! -d $THERE/crypto/$i ]
   then
     options="$options no-$i"
   fi
@@ -898,21 +899,21 @@ fi
 # compiler for the platform ... in which case we add it on
 # the end ... otherwise we leave it off
 
-$PERL ./Configure LIST | grep "$OUT-$CC" > /dev/null
+$PERL $THERE/Configure LIST | grep "$OUT-$CC" > /dev/null
 if [ $? = "0" ]; then
   OUT="$OUT-$CC"
 fi
 
 OUT="$OUT"
 
-$PERL ./Configure LIST | grep "$OUT" > /dev/null
+$PERL $THERE/Configure LIST | grep "$OUT" > /dev/null
 if [ $? = "0" ]; then
   echo Configuring for $OUT
 
   if [ "$TEST" = "true" ]; then
-    echo $PERL ./Configure $OUT $options
+    echo $PERL $THERE/Configure $OUT $options
   else
-    $PERL ./Configure $OUT $options
+    $PERL $THERE/Configure $OUT $options
   fi
 else
   echo "This system ($OUT) is not supported. See file INSTALL for details."