X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/f43579d10c48a2a21c8f418a2a1a7de118b52429..bcae6dd40485fce886c08c101d39226d6aba7022:/buildlib/tools.m4

diff --git a/buildlib/tools.m4 b/buildlib/tools.m4
index de9c8a103..281a4ec1d 100644
--- a/buildlib/tools.m4
+++ b/buildlib/tools.m4
@@ -13,32 +13,47 @@ AC_DEFUN(ah_HAVE_GETCONF,
 	AC_SUBST(GETCONF)
 ])
 
-AC_DEFUN(ah_NUM_CPUS,
+dnl ah_GET_CONF(variable, value ..., [default])
+AC_DEFUN(ah_GET_GETCONF,
 	[AC_REQUIRE([ah_HAVE_GETCONF])
-	AC_MSG_CHECKING([number of cpus])
+	if test ! -z "$GETCONF";then
+		old_args="[$]@"
+		set -- $2
+		while eval test -z \"\$$1\" -a ! -z \"[$]1\";do
+			eval $1=`$GETCONF "[$]1" 2>/dev/null`
+			shift
+		done
+	fi
+	if eval test -z \"\$$1\" -o \"\$$1\" = "-1";then
+		eval $1="$3"
+	fi
+])
+AC_DEFUN(ah_NUM_CPUS,
+	[AC_MSG_CHECKING([number of cpus])
 	AC_ARG_WITH(cpus,
 		[  --with-cpus             The number of cpus to be used for building(see --with-procs, default 1)],
-		[if test "$withval" = "yes"; then
-			if test "$GETCONF";then
-				NUM_CPUS=`$GETCONF _NPROCESSORS_ONLN 2>/dev/null`
-			else
-				NUM_CPUS=1
-			fi
+		[
+		if test "$withval" = "yes"; then
+			ah_GET_GETCONF(NUM_CPUS, SC_NPROCESSORS_ONLN _NPROCESSORS_ONLN, 1)
 		elif test ! "$withval" = "no";then
 			NUM_CPUS=$withval
-		fi],
-		[if test "$GETCONF";then
-			NUM_CPUS=`$GETCONF _NPROCESSORS_ONLN 2>/dev/null`
-		else
+		elif test "$withval" = "no";then
 			NUM_CPUS=1
-		fi]
+		fi],
+		[ah_GET_GETCONF(NUM_CPUS, SC_NPROCESSORS_ONLN _NPROCESSORS_ONLN, 1)]
 	)
+	ah_NUM_CPUS_msg="$NUM_CPUS"
+	if test "$NUM_CPUS" = "0"; then
+		# broken getconf, time to bitch.
+		ah_NUM_CPUS_msg="found 0 cpus.  Has someone done a lobotomy?"
+		NUM_CPUS=1
+	fi
 	if test $NUM_CPUS = 1 ;then
 		default_PROC_MULTIPLY=1
 	else
 		default_PROC_MULTIPLY=2
 	fi
-	AC_MSG_RESULT([$NUM_CPUS])
+	AC_MSG_RESULT([$ah_NUM_CPUS_msg])
 	AC_SUBST(NUM_CPUS)
 ])
 AC_DEFUN(ah_PROC_MULTIPLY,
@@ -64,12 +79,57 @@ AC_DEFUN(ah_NUM_PROCS,
 	AC_ARG_WITH(procs,
 		[  --with-procs            The number of processes to run in parallel during make(num_cpus * multiplier).],
 		[if test "$withval" = "yes"; then
-			let "NUM_PROCS=$NUM_CPUS*$PROC_MULTIPLY"
+			NUM_PROCS=`expr $NUM_CPUS \* $PROC_MULTIPLY`
 		elif test ! "$withval" = "no";then
 			NUM_PROCS=$withval
 		fi],
-		[let "NUM_PROCS=$NUM_CPUS*$PROC_MULTIPLY"]
+		[NUM_PROCS=`expr $NUM_CPUS \* $PROC_MULTIPLY`]
 	)
 	AC_MSG_RESULT([$NUM_PROCS])
 	AC_SUBST(NUM_PROCS)
 ])
+
+AC_DEFUN(ah_GLIBC_VER,
+	[AC_MSG_CHECKING([glibc version])
+	dummy=if$$
+	cat <<_GLIBC_>$dummy.c
+#include <features.h>
+#include <stdio.h>
+int main(int argc, char **argv) { printf("libc6.%d",__GLIBC_MINOR__); exit(0); }
+_GLIBC_
+	${CC-cc} $dummy.c -o $dummy
+	if test "$?" = 0; then
+		GLIBC_VER=`./$dummy`
+		AC_MSG_RESULT([$GLIBC_VER])
+		GLIBC_VER="-$GLIBC_VER"
+	else
+		AC_MSG_WARN([cannot determine GNU C library minor version number])
+	fi
+	rm -f $dummy $dummy.c
+	AC_SUBST(GLIBC_VER)
+])
+
+AC_DEFUN(ah_LIBSTDCPP_VER,
+	[AC_MSG_CHECKING([libstdc++ version])
+	dummy=if$$
+	cat <<_LIBSTDCPP_>$dummy.cc
+#include <features.h>
+#include <stdio.h>
+int main(int argc, char **argv) { exit(0); }
+_LIBSTDCPP_
+	${CXX-c++} $dummy.cc -o $dummy
+
+	if test "$?" = 0; then
+		soname=`objdump -p ./$dummy |grep NEEDED|grep libstd`
+		LIBSTDCPP_VER=`echo $soname | sed -e 's/.*NEEDED.*libstdc++-libc.*-\(.*\).so.\(.*\)/\2-\1/'`
+	fi
+	rm -f $dummy $dummy.cc
+
+	if test -z "$LIBSTDCPP_VER"; then
+		AC_MSG_WARN([cannot determine standard C++ library version number])
+	else
+		AC_MSG_RESULT([$LIBSTDCPP_VER])
+		LIBSTDCPP_VER="-$LIBSTDCPP_VER"
+	fi
+	AC_SUBST(LIBSTDCPP_VER)
+])