From 6b8cd68823e8d6cecb04e084c8b54e7daacb58bf Mon Sep 17 00:00:00 2001
From: Theodore Tso <tytso@mit.edu>
Date: Fri, 26 May 1995 02:11:28 +0000
Subject: [PATCH] Add support for shared libraries

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@5883 dc483132-0cff-0310-8789-dd5450dbe970
---
 src/ChangeLog    |  7 +++++++
 src/aclocal.m4   | 42 ++++++++++++++++++++++++++++++++++++++++++
 src/configure.in | 27 +++++++++++++++++++++++++++
 3 files changed, 76 insertions(+)

diff --git a/src/ChangeLog b/src/ChangeLog
index a4937f903..57fb18a25 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,10 @@
+Thu May 25 22:01:39 1995  Theodore Y. Ts'o  (tytso@dcl)
+
+	* aclocal.m4(V5_MAKE_SHARED_LIB, V5_SHARED_LIB_OBJS): Added autoconf
+		rules for creating shared libraries.
+
+	* configure.in: Add support for --enable-shared
+
 Thu May 25 11:30:00 1995 Keith Vetter (keithv@fusion.com)
 
 	* Makefile.in: don't copy profile.h here but do it in include/makefile.
diff --git a/src/aclocal.m4 b/src/aclocal.m4
index bfc1d4858..993288f0f 100644
--- a/src/aclocal.m4
+++ b/src/aclocal.m4
@@ -647,3 +647,45 @@ if test $krb5_cv_has_ansi_volatile = no; then
 ADD_DEF(-Dvolatile=)
 fi
 ])dnl
+dnl
+dnl This rule supports the generation of the shared library object files
+dnl
+define(V5_SHARED_LIB_OBJS,[
+if test ${krb5_cv_shlibs_dir}x != x; then
+SHARED_RULE="	\$(CC) ${krb5_cv_shlibs_cflags} \$(CFLAGS) -o ${krb5_cv_shlibs_dir}/\$""*.o -c \$(srcdir)/\$""*.c"
+SHARED_RULE_LOCAL="	\$(CC) ${krb5_cv_shlibs_cflags} \$(CFLAGS) -o ${krb5_cv_shlibs_dir}/\$""*.o -c \$""*.c"
+else
+SHARED_RULE=
+SHARED_RULE_LOCAL=
+fi
+AC_SUBST(SHARED_RULE)
+AC_SUBST(SHARED_RULE_LOCAL)
+])dnl
+dnl
+dnl This rule adds the additional Makefile fragment necessary to actually 
+dnl create the shared library
+dnl
+define(V5_MAKE_SHARED_LIB,[
+AC_ARG_ENABLE([shared],
+[  --enable-shared         build with shared libraries],[
+HOST_TYPE=$krb5_cv_host
+AC_SUBST(HOST_TYPE)
+SHEXT=$krb5_cv_shlibs_ext
+AC_SUBST(SHEXT)
+DO_MAKE_SHLIB="$1.\$""(SHEXT)"
+AC_DIVERT_PUSH(AC_DIVERSION_MAKEFILE)dnl
+
+all:: $(DO_MAKE_SHLIB)
+
+clean:: 
+	$(RM) $1.[$](SHEXT)
+
+$1.[$](SHEXT): [$](LIBDONE)
+	[$](SRCTOP)/util/makeshlib [$](HOST_TYPE) [$](CC) [$]@ [$](LIB_SUBDIRS)
+
+AC_DIVERT_POP()dnl
+],[
+DO_MAKE_SHLIB=
+])dnl
+AC_SUBST(DO_MAKE_SHLIB)
+])dnl
diff --git a/src/configure.in b/src/configure.in
index 4c9ddb861..1b6badd94 100644
--- a/src/configure.in
+++ b/src/configure.in
@@ -2,9 +2,36 @@ AC_INIT(configure.in)
 WITH_CCOPTS
 CONFIG_RULES
 AC_SET_BUILDTOP
+AC_MSG_CHECKING([for build host])
+AC_CACHE_VAL(krb5_cv_host, [AC_CANONICAL_HOST
+krb5_cv_host=$host])
+AC_MSG_RESULT($krb5_cv_host)
 WITH_KRB5ROOT
 WITH_KRB4
 WITH_NETLIB
+AC_ARG_ENABLE([shared],
+[  --enable-shared         build with shared libraries],[
+case $krb5_cv_host in
+*-*-linux*)
+	echo "Enabling shared libraries for Linux...."
+	krb5_cv_shlibs_cflags=-fPIC
+	krb5_cv_shlibs_ext=so
+	krb5_cv_shlibs_dir=shared
+	;;
+*-*-solaris*)
+	echo "Enabling shared libraries for Solaris...."
+	krb5_cv_shlibs_cflags=-Kpic
+	krb5_cv_shlibs_ext=so
+	krb5_cv_shlibs_dir=shared
+	;;
+*) 
+	echo " "
+	echo "Shared libraries not supported on $krb5_cv_host"
+	exit 1
+	;;
+esac],[krb5_cv_shlibs_cflags=
+krb5_cv_shlibs_ext=
+krb5_cv_shlibs_dir=])
 AC_ARG_ENABLE([athena],
 [  --enable-athena         build with MIT Project Athena configuration],,)
 if test -z "$KRB4_LIB"; then
-- 
2.26.2