X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=configure.in;h=c1a08663d4a2522550b16ab6d61b22c4ae7a9931;hb=4833707309dca7707ba51719f9ee815846dab280;hp=50e69e1640dfa48ef9d3825e7827fee1eb253cb6;hpb=67887df61675bf52ff1a82e52d6c7359f64c9b9a;p=adns.git

diff --git a/configure.in b/configure.in
index 50e69e1..c1a0866 100644
--- a/configure.in
+++ b/configure.in
@@ -23,6 +23,29 @@
 
 AC_INIT(src/adns.h)
 AC_CONFIG_HEADER(src/config.h)
+
+AC_MSG_CHECKING(whether you requested dynamic linking)
+AC_SUBST(ENABLE_DYNAMIC)
+AC_ARG_ENABLE(dynamic,
+[  --disable-dynamic       use static linking
+  --enable-dynamic[=elf]  create and use ELF dynamic library (default)],
+[	case "$enableval" in
+	elf|yes)
+		ENABLE_DYNAMIC=elf
+		AC_MSG_RESULT([yes (ELF)])
+		;;
+	no)	ENABLE_DYNAMIC=no
+		AC_MSG_RESULT(no)
+		;;
+	*)	AC_MSG_ERROR(
+["invalid value $enableval for --enable-dynamic, try yes or elf"])
+		;;
+	esac
+],[
+		ENABLE_DYNAMIC=yes
+		AC_MSG_RESULT([yes, by default])
+])
+
 AC_PROG_CC
 AC_PROG_CPP
 AC_PROG_RANLIB