X-Git-Url: https://git.saurik.com/apt.git/blobdiff_plain/0b62d3825c6f21bf85faaf2983747be1c84094ac..1ac90757e7d31b21fca7ddf7eb48cfc548b3ffb3:/buildlib/tools.m4

diff --git a/buildlib/tools.m4 b/buildlib/tools.m4
index c0e638b71..9a8d744f2 100644
--- a/buildlib/tools.m4
+++ b/buildlib/tools.m4
@@ -89,8 +89,9 @@ AC_DEFUN(ah_NUM_PROCS,
 	AC_SUBST(NUM_PROCS)
 ])
 
-AC_DEFUN(ah_GLIBC_VER,
+AC_DEFUN(rc_GLIBC_VER,
 	[AC_MSG_CHECKING([glibc version])
+	AC_CACHE_VAL(ac_cv_glibc_ver,
 	dummy=if$$
 	cat <<_GLIBC_>$dummy.c
 #include <features.h>
@@ -98,19 +99,21 @@ AC_DEFUN(ah_GLIBC_VER,
 #include <stdlib.h>
 int main(int argc, char **argv) { printf("libc6.%d",__GLIBC_MINOR__); exit(0); }
 _GLIBC_
-	${CC-cc} $dummy.c -o $dummy
+	${CC-cc} $dummy.c -o $dummy > /dev/null 2>&1
 	if test "$?" = 0; then
 		GLIBC_VER=`./$dummy`
 		AC_MSG_RESULT([$GLIBC_VER])
-		GLIBC_VER="-$GLIBC_VER"
+		ac_cv_glibc_ver=$GLIBC_VER
 	else
 		AC_MSG_WARN([cannot determine GNU C library minor version number])
 	fi
 	rm -f $dummy $dummy.c
+	)
+	GLIBC_VER="-$ac_cv_glibc_ver"
 	AC_SUBST(GLIBC_VER)
 ])
 
-AC_DEFUN(ah_LIBSTDCPP_VER,
+AC_DEFUN(rc_LIBSTDCPP_VER,
 	[AC_MSG_CHECKING([libstdc++ version])
 	dummy=if$$
 	cat <<_LIBSTDCPP_>$dummy.cc
@@ -119,11 +122,11 @@ AC_DEFUN(ah_LIBSTDCPP_VER,
 #include <stdlib.h>
 int main(int argc, char **argv) { exit(0); }
 _LIBSTDCPP_
-	${CXX-c++} $dummy.cc -o $dummy
+	${CXX-c++} $dummy.cc -o $dummy > /dev/null 2>&1
 
 	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/'`
+                LIBSTDCPP_VER=`echo $soname | sed -e 's/.*NEEDED.*libstdc++\(-libc.*\(-.*\)\)\?.so.\(.*\)/\3\2/'`
 	fi
 	rm -f $dummy $dummy.cc
 
@@ -135,3 +138,23 @@ _LIBSTDCPP_
 	fi
 	AC_SUBST(LIBSTDCPP_VER)
 ])
+
+AC_DEFUN(ah_GCC3DEP,[
+	AC_MSG_CHECKING(if $CXX -MD works)
+	touch gcc3dep.cc
+	${CXX-c++} -MD -o gcc3dep_test.o -c gcc3dep.cc
+	rm -f gcc3dep.cc gcc3dep_test.o
+	if test -e gcc3dep.d; then
+		rm -f gcc3dep.d
+		GCC_MD=input
+		GCC3DEP=
+	elif test -e gcc3dep_test.d; then
+		rm -f gcc3dep_test.d
+		GCC_MD=output
+		GCC3DEP=yes
+	else
+		AC_MSG_ERROR(no)
+	fi
+	AC_MSG_RESULT([yes, for $GCC_MD])
+	AC_SUBST(GCC3DEP)
+])