transmission/m4/check-ssl.m4

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# ===========================================================================
# http://autoconf-archive.cryp.to/check_ssl.html
# ===========================================================================
#
# SYNOPSIS
#
# CHECK_SSL
#
# DESCRIPTION
#
# This macro will check various standard spots for OpenSSL including a
# user-supplied directory. The user uses '--with-ssl' or
# '--with-ssl=/path/to/ssl' as arguments to configure.
#
# If OpenSSL is found the include directory gets added to CFLAGS and
# CXXFLAGS as well as '-DHAVE_SSL', '-lssl' & '-lcrypto' get added to
# LIBS, and the libraries location gets added to LDFLAGS. Finally
# 'HAVE_SSL' gets set to 'yes' for use in your Makefile.in I use it like
# so (valid for gmake):
#
# HAVE_SSL = @HAVE_SSL@
# ifeq ($(HAVE_SSL),yes)
# SRCS+= @srcdir@/my_file_that_needs_ssl.c
# endif
#
# For bsd 'bmake' use:
#
# .if ${HAVE_SSL} == "yes"
# SRCS+= @srcdir@/my_file_that_needs_ssl.c
# .endif
#
# LAST MODIFICATION
#
# 2008-04-12
#
# COPYLEFT
#
# Copyright (c) 2008 Mark Ethan Trostler <trostler@juniper.net>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved.
AC_DEFUN([CHECK_SSL],
[
AC_MSG_CHECKING([for OpenSSL])
for dir in $with_ssl /usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr; do
ssldir="$dir"
if test -f "$dir/include/openssl/ssl.h"; then
found_ssl="yes";
OPENSSL_CFLAGS="-I$ssldir/include";
break;
fi
if test -f "$dir/include/ssl.h"; then
found_ssl="yes";
OPENSSL_CFLAGS="-I$ssldir/include";
break
fi
done
if test x_$found_ssl != x_yes; then
AC_MSG_ERROR([Cannot locate ssl])
else
AC_MSG_RESULT([$ssldir])
OPENSSL_LIBS="-L$ssldir/lib -lssl -lcrypto";
fi
])dnl