Annotation of embedaddon/iperf/config/ax_check_openssl.m4, revision 1.1.1.1
1.1 misho 1: # ===========================================================================
2: # https://www.gnu.org/software/autoconf-archive/ax_check_openssl.html
3: # ===========================================================================
4: #
5: # SYNOPSIS
6: #
7: # AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]])
8: #
9: # DESCRIPTION
10: #
11: # Look for OpenSSL in a number of default spots, or in a user-selected
12: # spot (via --with-openssl). Sets
13: #
14: # OPENSSL_INCLUDES to the include directives required
15: # OPENSSL_LIBS to the -l directives required
16: # OPENSSL_LDFLAGS to the -L or -R flags required
17: #
18: # and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately
19: #
20: # This macro sets OPENSSL_INCLUDES such that source files should use the
21: # openssl/ directory in include directives:
22: #
23: # #include <openssl/hmac.h>
24: #
25: # LICENSE
26: #
27: # Copyright (c) 2009,2010 Zmanda Inc. <http://www.zmanda.com/>
28: # Copyright (c) 2009,2010 Dustin J. Mitchell <dustin@zmanda.com>
29: #
30: # Copying and distribution of this file, with or without modification, are
31: # permitted in any medium without royalty provided the copyright notice
32: # and this notice are preserved. This file is offered as-is, without any
33: # warranty.
34:
35: #serial 10
36:
37: AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL])
38: AC_DEFUN([AX_CHECK_OPENSSL], [
39: found=false
40: AC_ARG_WITH([openssl],
41: [AS_HELP_STRING([--with-openssl=DIR],
42: [root of the OpenSSL directory])],
43: [
44: case "$withval" in
45: "" | y | ye | yes | n | no)
46: AC_MSG_ERROR([Invalid --with-openssl value])
47: ;;
48: *) ssldirs="$withval"
49: ;;
50: esac
51: ], [
52: # if pkg-config is installed and openssl has installed a .pc file,
53: # then use that information and don't search ssldirs
54: AC_CHECK_TOOL([PKG_CONFIG], [pkg-config])
55: if test x"$PKG_CONFIG" != x""; then
56: OPENSSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null`
57: if test $? = 0; then
58: OPENSSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null`
59: OPENSSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null`
60: found=true
61: fi
62: fi
63:
64: # no such luck; use some default ssldirs
65: if ! $found; then
66: ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr"
67: fi
68: ]
69: )
70:
71:
72: # note that we #include <openssl/foo.h>, so the OpenSSL headers have to be in
73: # an 'openssl' subdirectory
74:
75: if ! $found; then
76: OPENSSL_INCLUDES=
77: for ssldir in $ssldirs; do
78: AC_MSG_CHECKING([for openssl/ssl.h in $ssldir])
79: if test -f "$ssldir/include/openssl/ssl.h"; then
80: OPENSSL_INCLUDES="-I$ssldir/include"
81: OPENSSL_LDFLAGS="-L$ssldir/lib"
82: OPENSSL_LIBS="-lssl -lcrypto"
83: found=true
84: AC_MSG_RESULT([yes])
85: break
86: else
87: AC_MSG_RESULT([no])
88: fi
89: done
90:
91: # if the file wasn't found, well, go ahead and try the link anyway -- maybe
92: # it will just work!
93: fi
94:
95: # try the preprocessor and linker with our new flags,
96: # being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS
97:
98: AC_MSG_CHECKING([whether compiling and linking against OpenSSL works])
99: echo "Trying link with OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \
100: "OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&AS_MESSAGE_LOG_FD
101:
102: save_LIBS="$LIBS"
103: save_LDFLAGS="$LDFLAGS"
104: save_CPPFLAGS="$CPPFLAGS"
105: LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS"
106: LIBS="$OPENSSL_LIBS $LIBS"
107: CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS"
108: AC_LINK_IFELSE(
109: [AC_LANG_PROGRAM([#include <openssl/ssl.h>], [SSL_new(NULL)])],
110: [
111: AC_MSG_RESULT([yes])
112: $1
113: ], [
114: AC_MSG_RESULT([no])
115: $2
116: ])
117: CPPFLAGS="$save_CPPFLAGS"
118: LDFLAGS="$save_LDFLAGS"
119: LIBS="$save_LIBS"
120:
121: AC_SUBST([OPENSSL_INCLUDES])
122: AC_SUBST([OPENSSL_LIBS])
123: AC_SUBST([OPENSSL_LDFLAGS])
124: ])
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