Annotation of embedaddon/ntp/m4/ntp_openssl.m4, revision 1.1
1.1 ! misho 1: dnl ######################################################################
! 2: dnl OpenSSL support shared by top-level and sntp/configure.ac
! 3: AC_DEFUN([NTP_OPENSSL], [
! 4:
! 5: AC_SUBST([OPENSSL])
! 6: AC_SUBST([OPENSSL_INC])
! 7: AC_SUBST([OPENSSL_LIB])
! 8:
! 9: AC_MSG_CHECKING([for openssl library directory])
! 10: AC_ARG_WITH(
! 11: [openssl-libdir],
! 12: [AS_HELP_STRING(
! 13: [--with-openssl-libdir],
! 14: [+ =/something/reasonable]
! 15: )],
! 16: [ans=$withval],
! 17: [
! 18: case "$build" in
! 19: $host) ans=yes ;;
! 20: *) ans=no ;;
! 21: esac
! 22: ]
! 23: )
! 24: case "$ans" in
! 25: no)
! 26: ;;
! 27: yes) # Look in:
! 28: ans="/usr/lib /usr/lib/openssl /usr/sfw/lib /usr/local/lib /usr/local/ssl/lib /lib"
! 29: ;;
! 30: *) # Look where they said
! 31: ;;
! 32: esac
! 33: case "$ans" in
! 34: no)
! 35: ;;
! 36: *) # Look for libcrypto.a and libssl.a:
! 37: for i in $ans no
! 38: do
! 39: case "$host" in
! 40: *-*-darwin*)
! 41: test -f $i/libcrypto.dylib -a -f $i/libssl.dylib && break
! 42: ;;
! 43: *)
! 44: test -f $i/libcrypto.so -a -f $i/libssl.so && break
! 45: test -f $i/libcrypto.a -a -f $i/libssl.a && break
! 46: ;;
! 47: esac
! 48: done
! 49: case "$i" in
! 50: no)
! 51: ans=no
! 52: OPENSSL_LIB=
! 53: ;;
! 54: *) ans=$i
! 55: OPENSSL_LIB=$ans
! 56: ;;
! 57: esac
! 58: ;;
! 59: esac
! 60: AC_MSG_RESULT([$ans])
! 61:
! 62: AC_MSG_CHECKING([for openssl include directory])
! 63: AC_ARG_WITH(
! 64: [openssl-incdir],
! 65: [AS_HELP_STRING(
! 66: [--with-openssl-incdir],
! 67: [+ =/something/reasonable]
! 68: )],
! 69: [ans=$withval],
! 70: [
! 71: case "$build" in
! 72: $host) ans=yes ;;
! 73: *) ans=no ;;
! 74: esac
! 75: ]
! 76: )
! 77: case "$ans" in
! 78: no)
! 79: ;;
! 80: yes) # look in:
! 81: ans="/usr/include /usr/sfw/include /usr/local/include /usr/local/ssl/include"
! 82: ;;
! 83: *) # Look where they said
! 84: ;;
! 85: esac
! 86: case "$ans" in
! 87: no)
! 88: ;;
! 89: *) # look for openssl/opensslconf.h:
! 90: for i in $ans no
! 91: do
! 92: test -f $i/openssl/opensslconf.h && break
! 93: done
! 94: case "$i" in
! 95: no)
! 96: ans=no
! 97: OPENSSL_INC=
! 98: ;;
! 99: *) ans=$i
! 100: OPENSSL_INC=$ans
! 101: ;;
! 102: esac
! 103: ;;
! 104: esac
! 105: AC_MSG_RESULT([$ans])
! 106:
! 107: AC_MSG_CHECKING([if we will use crypto])
! 108: AC_ARG_WITH(
! 109: [crypto],
! 110: [AS_HELP_STRING(
! 111: [--with-crypto],
! 112: [+ =openssl]
! 113: )],
! 114: [ans=$withval],
! 115: [ans=yes]
! 116: )
! 117: case "$ans" in
! 118: no)
! 119: ;;
! 120: yes|openssl)
! 121: if test -z "$OPENSSL_LIB" -o -z "$OPENSSL_INC"
! 122: then
! 123: ans=no
! 124: else
! 125: ans=yes
! 126: fi
! 127: esac
! 128: ntp_openssl=$ans
! 129: AC_MSG_RESULT([$ans])
! 130:
! 131: case "$ntp_openssl" in
! 132: yes)
! 133: # We have OpenSSL inc/lib - use them.
! 134: case "$OPENSSL_INC" in
! 135: /usr/include)
! 136: ;;
! 137: *)
! 138: CPPFLAGS="$CPPFLAGS -I$OPENSSL_INC"
! 139: ;;
! 140: esac
! 141: case "$OPENSSL_LIB" in
! 142: /usr/lib)
! 143: ;;
! 144: *)
! 145: LDFLAGS="$LDFLAGS -L$OPENSSL_LIB"
! 146: case "$need_dash_r" in
! 147: 1)
! 148: LDFLAGS="$LDFLAGS -R$OPENSSL_LIB"
! 149: esac
! 150: ;;
! 151: esac
! 152: AC_SUBST([LCRYPTO], [-lcrypto])
! 153: AC_DEFINE([OPENSSL], [1], [Use OpenSSL?])
! 154: esac
! 155:
! 156: #
! 157: # check for linking with -lcrypto failure, and try -lz -lcrypto.
! 158: # Helps m68k-atari-mint
! 159: #
! 160: case "$ntp_openssl" in
! 161: yes)
! 162: NTPO_SAVED_LIBS="$LIBS"
! 163: LIBS="$NTPO_SAVED_LIBS $LCRYPTO"
! 164: AC_CACHE_CHECK(
! 165: [if linking with $LCRYPTO alone works],
! 166: [ntp_cv_bare_lcrypto],
! 167: [AC_LINK_IFELSE(
! 168: [AC_LANG_PROGRAM(
! 169: [[
! 170: #include "openssl/err.h"
! 171: #include "openssl/evp.h"
! 172: ]],
! 173: [[
! 174: ERR_load_crypto_strings();
! 175: OpenSSL_add_all_algorithms();
! 176: ]]
! 177: )],
! 178: [ntp_cv_bare_lcrypto=yes],
! 179: [ntp_cv_bare_lcrypto=no]
! 180: )]
! 181: )
! 182: case "$ntp_cv_bare_lcrypto" in
! 183: no)
! 184: LIBS="$NTPO_SAVED_LIBS $LCRYPTO -lz"
! 185: AC_CACHE_CHECK(
! 186: [if linking with $LCRYPTO -lz works],
! 187: [ntp_cv_lcrypto_lz],
! 188: [AC_LINK_IFELSE(
! 189: [AC_LANG_PROGRAM(
! 190: [[
! 191: #include "openssl/err.h"
! 192: #include "openssl/evp.h"
! 193: ]],
! 194: [[
! 195: ERR_load_crypto_strings();
! 196: OpenSSL_add_all_algorithms();
! 197: ]]
! 198: )],
! 199: [ntp_cv_lcrypto_lz=yes],
! 200: [ntp_cv_lcrypto_lz=no]
! 201: )]
! 202: )
! 203: case "$ntp_cv_lcrypto_lz" in
! 204: yes)
! 205: LCRYPTO="$LCRYPTO -lz"
! 206: esac
! 207: esac
! 208: LIBS="$NTPO_SAVED_LIBS"
! 209: AS_UNSET([NTPO_SAVED_LIBS])
! 210: esac
! 211:
! 212: #
! 213: # Older OpenSSL headers have a number of callback prototypes inside
! 214: # other function prototypes which trigger copious warnings with gcc's
! 215: # -Wstrict-prototypes, which is included in -Wall.
! 216: #
! 217: # An example:
! 218: #
! 219: # int i2d_RSA_NET(const RSA *a, unsigned char **pp,
! 220: # int (*cb)(), int sgckey);
! 221: # ^^^^^^^^^^^
! 222: #
! 223: #
! 224: #
! 225: openssl_triggers_warnings=unknown
! 226: SAVED_CFLAGS="$CFLAGS"
! 227:
! 228: case "$GCC$ntp_openssl" in
! 229: yesyes)
! 230: CFLAGS="$CFLAGS -Werror"
! 231: AC_COMPILE_IFELSE(
! 232: [AC_LANG_PROGRAM(
! 233: [[
! 234: ]],
! 235: [[
! 236: /* see if -Werror breaks gcc */
! 237: ]]
! 238: )],
! 239: [gcc_handles_Werror=yes],
! 240: [gcc_handles_Werror=no]
! 241: )
! 242: case "$gcc_handles_Werror" in
! 243: no)
! 244: # if this gcc doesn't do -Werror go ahead and use
! 245: # -Wstrict-prototypes.
! 246: openssl_triggers_warnings=yes
! 247: ;;
! 248: yes)
! 249: CFLAGS="$CFLAGS -Wstrict-prototypes"
! 250: AC_COMPILE_IFELSE(
! 251: [AC_LANG_PROGRAM(
! 252: [[
! 253: #include "openssl/asn1_mac.h"
! 254: #include "openssl/bn.h"
! 255: #include "openssl/err.h"
! 256: #include "openssl/evp.h"
! 257: #include "openssl/pem.h"
! 258: #include "openssl/rand.h"
! 259: #include "openssl/x509v3.h"
! 260: ]],
! 261: [[
! 262: /* empty body */
! 263: ]]
! 264: )],
! 265: [openssl_triggers_warnings=no],
! 266: [openssl_triggers_warnings=yes]
! 267: )
! 268: esac
! 269: case "$openssl_triggers_warnings" in
! 270: yes)
! 271: CFLAGS="$SAVED_CFLAGS -Wno-strict-prototypes"
! 272: ;;
! 273: *)
! 274: CFLAGS="$SAVED_CFLAGS -Wstrict-prototypes"
! 275: esac
! 276: ;;
! 277: yesno)
! 278: # gcc without OpenSSL
! 279: CFLAGS="$SAVED_CFLAGS -Wstrict-prototypes"
! 280: esac
! 281:
! 282: ])
! 283: dnl ======================================================================
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