1# javacomp.m4 serial 10 2dnl Copyright (C) 2001-2003, 2006-2007 Free Software Foundation, Inc. 3dnl This file is free software; the Free Software Foundation 4dnl gives unlimited permission to copy and/or distribute it, 5dnl with or without modifications, as long as this notice is preserved. 6 7# Prerequisites of javacomp.sh. 8# gt_JAVACOMP([source-version], [target-version]) 9# Sets HAVE_JAVACOMP to nonempty if javacomp.sh will allow Java source code 10# according to source-version to be compiled to Java bytecode classes in the 11# target-version format. 12# 13# source-version can be: support for 14# 1.3 inner classes 15# 1.4 assert keyword 16# 1.5 generic classes and methods 17# 1.6 (not yet supported) 18# 19# target-version can be: classfile version: 20# 1.1 45.3 21# 1.2 46.0 22# 1.3 47.0 23# 1.4 48.0 24# 1.5 49.0 25# 1.6 50.0 26# The classfile version of a .class file can be determined through the "file" 27# command. More portably, the classfile major version can be determined through 28# "od -A n -t d1 -j 7 -N 1 classfile". 29# target-version can also be omitted. In this case, the required target-version 30# is determined from the found JVM (see macro gt_JAVAEXEC): 31# target-version for JVM 32# 1.1 JDK 1.1, jview 33# 1.2 JDK/JRE 1.2 34# 1.3 JDK/JRE 1.3, gij 3.3, 3.4 35# 1.4 JDK/JRE 1.4, gij 4.0, 4.1 36# 1.5 JDK/JRE 1.5 37# 1.6 JDK/JRE 1.6 38# Note: gij >= 3.3 can in some cases handle classes compiled with -target 1.4, 39# and gij >= 4.1 can in some cases partially handle classes compiled with 40# -target 1.5, but I have no idea how complete this support is. 41# 42# Specifying target-version is useful when building a library (.jar) that is 43# useful outside the given package. Omitting target-version is useful when 44# building an application. 45# 46# It is unreasonable to ask for: 47# - target-version < 1.4 with source-version >= 1.4, or 48# - target-version < 1.5 with source-version >= 1.5, or 49# - target-version < 1.6 with source-version >= 1.6, 50# because even Sun's javac doesn't support these combinations. 51# 52# It is redundant to ask for a target-version > source-version, since the 53# smaller target-version = source-version will also always work and newer JVMs 54# support the older target-versions too. Except for the case 55# target-version = 1.4, source-version = 1.3, which allows gcj versions 3.0 56# to 3.2 to be used. 57 58AC_DEFUN([gt_JAVACOMP], 59[ 60 ifelse([$2], [], [AC_REQUIRE([gt_JAVAEXEC])], []) 61 AC_EGREP_CPP(yes, [ 62#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__ 63 yes 64#endif 65], CLASSPATH_SEPARATOR=';', CLASSPATH_SEPARATOR=':') 66 source_version=$1 67 test -n "$source_version" || { 68 AC_MSG_ERROR([missing source-version argument to gt_@&t@JAVACOMP]) 69 } 70 ifelse([$2], [], 71 [if test -n "$HAVE_JAVAEXEC"; then 72 dnl Use $CONF_JAVA to determine the JVM's version. 73changequote(,)dnl 74 cat > conftestver.java <<EOF 75public class conftestver { 76 public static void main (String[] args) { 77 System.out.println(System.getProperty("java.specification.version")); 78 } 79} 80EOF 81changequote([,])dnl 82 dnl A precompiled version of conftestver.java, compiled with 83 dnl "javac -target 1.1". This avoids having to compile conftestver.java 84 dnl during each test for a suitable Java compiler. 85 dnl For the conversion from binary to this ASCII encapsulation, avoiding 86 dnl to assume the presence of uudecode, use the command 87 dnl $ od -A n -t o1 < conftestver.class | tr ' ' '\012'| sort | uniq | sed -e '/^$/d' -e 's,^,\\,' | tr -d '\012' 88 dnl and the long tr command in opposite direction. 89 dnl Finally move the position corresponding to \055 to the last position, 90 dnl to work around a coreutils-5.x bug. 91 echo 'xyvw!$!H!C,!)!2+!3!4*!5,!3!6,!7!8)!9)!:"!(LdhdmM"!$EFV"!%Ni_a"!1PdhaQngYakUXYfa"!%gXdh"!8EWPeXoXJfXhcJTmkdhcKFV"!,TinkZaOdfa"!2ZihbmalmoakIeXoX.!*!+)!;.!<!="!<eXoXIljaZdbdZXmdihIoakldih.!>!?)!@.!A!B"!-Zihbmalmoak"!2eXoXJfXhcJRYeaZm"!2eXoXJfXhcJTplmag"!$inm"!7PeXoXJdiJSkdhmTmkaXgK"!-camSkijakmp"!DEPeXoXJfXhcJTmkdhcKFPeXoXJfXhcJTmkdhcK"!5eXoXJdiJSkdhmTmkaXg"!)jkdhmfh"!7EPeXoXJfXhcJTmkdhcKFV!C!(!)!!!!!#!"!*!+!"!,!!!?!"!"!!!&Gt!"q!!!"!-!!!(!"!!!"!+!.!/!"!,!!!E!#!"!!!.r!#4$u!%s!&q!!!"!-!!!,!#!!!$!-!%!"!0!!!#!1' \ 92 | tr -d '\012\015' \ 93 | tr '!"#$%&()*+,-./0123456789:;<=>?@ABCDEFGIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyzH' '\000\001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037\040\041\046\050\051\052\056\057\073\074\076\103\106\114\116\117\120\123\124\126\133\141\142\143\144\145\146\147\151\152\154\155\156\157\160\162\163\164\165\166\171\261\262\266\267\270\272\276\312\376\055' \ 94 > conftestver.class 95 target_version=`{ 96 unset JAVA_HOME 97 echo "$as_me:__oline__: CLASSPATH=.${CLASSPATH:+$CLASSPATH_SEPARATOR$CLASSPATH} $CONF_JAVA conftestver" >&AS_MESSAGE_LOG_FD 98 CLASSPATH=.${CLASSPATH:+$CLASSPATH_SEPARATOR$CLASSPATH} $CONF_JAVA conftestver 2>&AS_MESSAGE_LOG_FD 99 }` 100 case "$target_version" in 101 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6) ;; 102 null) 103 dnl JDK 1.1.X returns null. 104 target_version=1.1 ;; 105 *) AC_MSG_WARN([unknown target-version $target_version, please update gt_@&t@JAVACOMP macro]) 106 target_version=1.1 ;; 107 esac 108 else 109 target_version="1.1" 110 fi 111 ], 112 [target_version=$2]) 113 case "$source_version" in 114 1.3) goodcode='class conftest {}' 115 failcode='class conftestfail { static { assert(true); } }' ;; 116 1.4) goodcode='class conftest { static { assert(true); } }' 117 failcode='class conftestfail<T> { T foo() { return null; } }' ;; 118 1.5) goodcode='class conftest<T> { T foo() { return null; } }' 119 failcode='class conftestfail syntax error' ;; 120 *) AC_MSG_ERROR([invalid source-version argument to gt_@&t@JAVACOMP: $source_version]) ;; 121 esac 122 case "$target_version" in 123 1.1) cfversion=45 ;; 124 1.2) cfversion=46 ;; 125 1.3) cfversion=47 ;; 126 1.4) cfversion=48 ;; 127 1.5) cfversion=49 ;; 128 1.6) cfversion=50 ;; 129 *) AC_MSG_ERROR([invalid target-version argument to gt_@&t@JAVACOMP: $target_version]) ;; 130 esac 131 # Function to output the classfile version of a file (8th byte) in decimal. 132 if od -A x < /dev/null >/dev/null 2>/dev/null; then 133 # Use POSIX od. 134 func_classfile_version () 135 { 136 od -A n -t d1 -j 7 -N 1 "[$]1" 137 } 138 else 139 # Use BSD hexdump. 140 func_classfile_version () 141 { 142 dd if="[$]1" bs=1 count=1 skip=7 2>/dev/null | hexdump -e '1/1 "%3d "' 143 echo 144 } 145 fi 146 AC_MSG_CHECKING([for Java compiler]) 147 dnl 148 dnl The support of GNU gcj for target-version and source-version: 149 dnl 150 dnl gcj 3.0.4 to 4.2 does not have a way to specify the target-version. 151 dnl It always assumes target-version=1.4 but labels the class files as 1.1. 152 dnl One consequence of this is that gcj compiles GetURL.java to invalid 153 dnl bytecode, which crashes with a VerifyError when executed by Sun Java 154 dnl 1.3.1. The bug is registered as java/7066, see 155 dnl http://gcc.gnu.org/bugzilla/show_bug.cgi?id=7066 156 dnl gcj 4.3 and newer has an option -ftarget=1.X. 157 dnl 158 dnl For gcj < 3.3, the source-version always is 1.3. 159 dnl For 3.3 <= gcj < 4.3, the source-version defaults to 1.4; option 160 dnl "-fno-assert" switches to source-version 1.3. 161 dnl gcj >= 4.3 has an option -fsource=1.X. 162 dnl 163 dnl The support of Sun javac for target-version and source-version: 164 dnl 165 dnl javac 1.3: -target 1.1 1.2 1.3 default: 1.1 166 dnl source always: 1.3 167 dnl 168 dnl javac 1.4: -target 1.1 1.2 1.3 1.4 default: 1.2 169 dnl -source 1.3 1.4 default: 1.3 170 dnl -target 1.1/1.2/1.3 only possible with -source 1.3 or no -source 171 dnl 172 dnl javac 1.5: -target 1.1 1.2 1.3 1.4 1.5 default: 1.5 173 dnl -source 1.3 1.4 1.5 default: 1.5 174 dnl -target 1.1/1.2/1.3 only possible with -source 1.3 175 dnl -target 1.4 only possible with -source 1.3/1.4 176 dnl 177 dnl javac 1.6: -target 1.1 1.2 1.3 1.4 1.5 1.6 default: 1.6 178 dnl -source 1.3 1.4 1.5 1.6 default: 1.5 179 dnl -target 1.1/1.2/1.3 only possible with -source 1.3 180 dnl -target 1.4 only possible with -source 1.3/1.4 181 dnl -target 1.5 only possible with -source 1.3/1.4/1.5 or no -source 182 dnl 183 dnl The support of jikes for target-version and source-version: 184 dnl 185 dnl jikes 1.14 does not have a way to specify the target-version. It 186 dnl always assumes target-version=1.1. 187 dnl 188 dnl For jikes 1.14, the source-version always is 1.3. 189 dnl 190 CONF_JAVAC= 191 HAVE_JAVAC_ENVVAR= 192 HAVE_GCJ_C= 193 HAVE_JAVAC= 194 HAVE_JIKES= 195 HAVE_JAVACOMP= 196changequote(,)dnl 197 cat > conftestlib.java <<EOF 198public class conftestlib { 199 public static void main (String[] args) { 200 } 201} 202EOF 203changequote([,])dnl 204 echo "$goodcode" > conftest.java 205 echo "$failcode" > conftestfail.java 206 dnl If the user has set the JAVAC environment variable, use that, if it 207 dnl satisfies the constraints (possibly after adding -target and -source 208 dnl options). 209 if test -n "$JAVAC"; then 210 dnl Try the original $JAVAC. 211 if $JAVAC --version 2>/dev/null | sed -e 1q | grep gcj > /dev/null; then 212 dnl It's a version of gcj. 213changequote(,)dnl 214 if $JAVAC --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^4\.[012]/d' | grep '^[4-9]' >/dev/null; then 215changequote([,])dnl 216 dnl It's a version of gcj >= 4.3. Assume the classfile versions are correct. 217 dnl Try $JAVAC. 218 rm -f conftest.class 219 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD 220 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 221 } \ 222 && test -f conftest.class \ 223 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 224 dnl Try adding -fsource option if it is useful. 225 rm -f conftest.class 226 rm -f conftestfail.class 227 if { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 228 $JAVAC -fsource="$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 229 } \ 230 && test -f conftest.class \ 231 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \ 232 && { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 233 $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 234 } \ 235 && test -f conftestfail.class \ 236 && ! { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 237 $JAVAC -fsource="$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 238 }; then 239 CONF_JAVAC="$JAVAC -fsource=$source_version" 240 HAVE_JAVAC_ENVVAR=1 241 HAVE_JAVACOMP=1 242 else 243 CONF_JAVAC="$JAVAC" 244 HAVE_JAVAC_ENVVAR=1 245 HAVE_JAVACOMP=1 246 fi 247 else 248 dnl Try with -fsource and -ftarget options. 249 rm -f conftest.class 250 rm -f conftestfail.class 251 if { echo "$as_me:__oline__: $JAVAC -fsource=$source_version -ftarget=$target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 252 $JAVAC -fsource="$source_version" -ftarget="$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 253 } \ 254 && test -f conftest.class \ 255 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 256 CONF_JAVAC="$JAVAC -fsource=$source_version -ftarget=$target_version" 257 HAVE_JAVAC_ENVVAR=1 258 HAVE_JAVACOMP=1 259 fi 260 fi 261 else 262 dnl It's a version of gcj < 4.3. Ignore the version of conftest.class. 263 if test "$target_version" = 1.4 && test "$source_version" = 1.4; then 264 dnl Try $JAVAC. 265 rm -f conftest.class 266 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD 267 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 268 } \ 269 && test -f conftest.class; then 270 CONF_JAVAC="$JAVAC" 271 HAVE_JAVAC_ENVVAR=1 272 HAVE_JAVACOMP=1 273 fi 274 else 275 if test "$target_version" = 1.4 && test "$source_version" = 1.3; then 276 dnl Try $JAVAC and "$JAVAC -fno-assert". But add -fno-assert only if 277 dnl it makes a difference. (It could already be part of $JAVAC.) 278 javac_works= 279 rm -f conftest.class 280 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD 281 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 282 } \ 283 && test -f conftest.class; then 284 javac_works=1 285 fi 286 javac_noassert_works= 287 rm -f conftest.class 288 if { echo "$as_me:__oline__: $JAVAC -fno-assert -d . conftest.java" >&AS_MESSAGE_LOG_FD 289 $JAVAC -fno-assert -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 290 } \ 291 && test -f conftest.class; then 292 javac_noassert_works=1 293 fi 294 if test -n "$javac_works" && test -n "$javac_noassert_works"; then 295 rm -f conftestfail.class 296 if { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 297 $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 298 } \ 299 && test -f conftestfail.class \ 300 && ! { echo "$as_me:__oline__: $JAVAC -fno-assert -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 301 $JAVAC -fno-assert -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 302 }; then 303 dnl "$JAVAC -fno-assert" works better than $JAVAC. 304 javac_works= 305 fi 306 fi 307 if test -n "$javac_works"; then 308 CONF_JAVAC="$JAVAC" 309 HAVE_JAVAC_ENVVAR=1 310 HAVE_JAVACOMP=1 311 else 312 if test -n "$javac_noassert_works"; then 313 CONF_JAVAC="$JAVAC -fno-assert" 314 HAVE_JAVAC_ENVVAR=1 315 HAVE_JAVACOMP=1 316 fi 317 fi 318 fi 319 fi 320 fi 321 else 322 dnl It's not gcj. Assume the classfile versions are correct. 323 dnl Try $JAVAC. 324 rm -f conftest.class 325 if { echo "$as_me:__oline__: $JAVAC -d . conftest.java" >&AS_MESSAGE_LOG_FD 326 $JAVAC -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 327 } \ 328 && test -f conftest.class \ 329 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 330 dnl Try adding -source option if it is useful. 331 rm -f conftest.class 332 rm -f conftestfail.class 333 if { echo "$as_me:__oline__: $JAVAC -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 334 $JAVAC -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 335 } \ 336 && test -f conftest.class \ 337 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \ 338 && { echo "$as_me:__oline__: $JAVAC -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 339 $JAVAC -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 340 } \ 341 && test -f conftestfail.class \ 342 && ! { echo "$as_me:__oline__: $JAVAC -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 343 $JAVAC -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 344 }; then 345 CONF_JAVAC="$JAVAC -source $source_version" 346 HAVE_JAVAC_ENVVAR=1 347 HAVE_JAVACOMP=1 348 else 349 CONF_JAVAC="$JAVAC" 350 HAVE_JAVAC_ENVVAR=1 351 HAVE_JAVACOMP=1 352 fi 353 else 354 dnl Try with -target option alone. (Sun javac 1.3.1 has the -target 355 dnl option but no -source option.) 356 rm -f conftest.class 357 if { echo "$as_me:__oline__: $JAVAC -target $target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 358 $JAVAC -target "$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 359 } \ 360 && test -f conftest.class \ 361 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 362 dnl Try adding -source option if it is useful. 363 rm -f conftest.class 364 rm -f conftestfail.class 365 if { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 366 $JAVAC -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 367 } \ 368 && test -f conftest.class \ 369 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \ 370 && { echo "$as_me:__oline__: $JAVAC -target $target_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 371 $JAVAC -target "$target_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 372 } \ 373 && test -f conftestfail.class \ 374 && ! { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 375 $JAVAC -target "$target_version" -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 376 }; then 377 CONF_JAVAC="$JAVAC -target $target_version -source $source_version" 378 HAVE_JAVAC_ENVVAR=1 379 HAVE_JAVACOMP=1 380 else 381 CONF_JAVAC="$JAVAC -target $target_version" 382 HAVE_JAVAC_ENVVAR=1 383 HAVE_JAVACOMP=1 384 fi 385 else 386 dnl Maybe this -target option requires a -source option? Try with 387 dnl -target and -source options. (Supported by Sun javac 1.4 and 388 dnl higher.) 389 rm -f conftest.class 390 if { echo "$as_me:__oline__: $JAVAC -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 391 $JAVAC -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 392 } \ 393 && test -f conftest.class \ 394 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 395 CONF_JAVAC="$JAVAC -target $target_version -source $source_version" 396 HAVE_JAVAC_ENVVAR=1 397 HAVE_JAVACOMP=1 398 fi 399 fi 400 fi 401 fi 402 fi 403 if test -z "$HAVE_JAVACOMP"; then 404 pushdef([AC_MSG_CHECKING],[:])dnl 405 pushdef([AC_CHECKING],[:])dnl 406 pushdef([AC_MSG_RESULT],[:])dnl 407 AC_CHECK_PROG(HAVE_GCJ_IN_PATH, gcj, yes) 408 AC_CHECK_PROG(HAVE_JAVAC_IN_PATH, javac, yes) 409 AC_CHECK_PROG(HAVE_JIKES_IN_PATH, jikes, yes) 410 popdef([AC_MSG_RESULT])dnl 411 popdef([AC_CHECKING])dnl 412 popdef([AC_MSG_CHECKING])dnl 413 if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_GCJ_IN_PATH"; then 414 dnl Test for a good gcj version (>= 3.0). 415changequote(,)dnl 416 if gcj --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^3\.[01]/d' | grep '^[3-9]' >/dev/null; then 417changequote([,])dnl 418 dnl See if libgcj.jar is well installed. 419 if { echo "$as_me:__oline__: gcj -C -d . conftestlib.java" >&AS_MESSAGE_LOG_FD 420 gcj -C -d . conftestlib.java >&AS_MESSAGE_LOG_FD 2>&1 421 }; then 422 dnl OK, gcj works. 423changequote(,)dnl 424 if gcj --version 2>/dev/null | sed -e 's,^[^0-9]*,,' -e 1q | sed -e '/^4\.[012]/d' | grep '^[4-9]' >/dev/null; then 425changequote([,])dnl 426 dnl It's a version of gcj >= 4.3. Assume the classfile versions are correct. 427 dnl Try gcj. 428 rm -f conftest.class 429 if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD 430 gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 431 } \ 432 && test -f conftest.class \ 433 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 434 dnl Try adding -fsource option if it is useful. 435 rm -f conftest.class 436 rm -f conftestfail.class 437 if { echo "$as_me:__oline__: gcj -C -fsource=$source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 438 gcj -C -fsource="$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 439 } \ 440 && test -f conftest.class \ 441 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \ 442 && { echo "$as_me:__oline__: gcj -C -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 443 gcj -C -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 444 } \ 445 && test -f conftestfail.class \ 446 && ! { echo "$as_me:__oline__: gcj -C -fsource=$source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 447 gcj -C -fsource="$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 448 }; then 449 CONF_JAVAC="gcj -C -fsource=$source_version" 450 HAVE_JAVAC_ENVVAR=1 451 HAVE_JAVACOMP=1 452 else 453 CONF_JAVAC="gcj -C" 454 HAVE_JAVAC_ENVVAR=1 455 HAVE_JAVACOMP=1 456 fi 457 else 458 dnl Try with -fsource and -ftarget options. 459 rm -f conftest.class 460 rm -f conftestfail.class 461 if { echo "$as_me:__oline__: gcj -C -fsource=$source_version -ftarget=$target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 462 gcj -C -fsource="$source_version" -ftarget="$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 463 } \ 464 && test -f conftest.class \ 465 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 466 CONF_JAVAC="gcj -C -fsource=$source_version -ftarget=$target_version" 467 HAVE_JAVAC_ENVVAR=1 468 HAVE_JAVACOMP=1 469 fi 470 fi 471 else 472 dnl It's a version of gcj < 4.3. Ignore the version of conftest.class. 473 dnl Now test whether it supports the desired target-version and 474 dnl source-version. 475 if test "$target_version" = 1.4 && test "$source_version" = 1.4; then 476 rm -f conftest.class 477 if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD 478 gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 479 } \ 480 && test -f conftest.class; then 481 CONF_JAVAC="gcj -C" 482 HAVE_GCJ_C=1 483 HAVE_JAVACOMP=1 484 fi 485 else 486 if test "$target_version" = 1.4 && test "$source_version" = 1.3; then 487 dnl Try gcj and "gcj -fno-assert". But add -fno-assert only if 488 dnl it works (not gcj < 3.3). 489 rm -f conftest.class 490 if { echo "$as_me:__oline__: gcj -C -fno-assert -d . conftest.java" >&AS_MESSAGE_LOG_FD 491 gcj -C -fno-assert -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 492 } \ 493 && test -f conftest.class; then 494 CONF_JAVAC="gcj -C -fno-assert" 495 HAVE_GCJ_C=1 496 HAVE_JAVACOMP=1 497 else 498 rm -f conftest.class 499 if { echo "$as_me:__oline__: gcj -C -d . conftest.java" >&AS_MESSAGE_LOG_FD 500 gcj -C -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 501 } \ 502 && test -f conftest.class; then 503 CONF_JAVAC="gcj -C" 504 HAVE_GCJ_C=1 505 HAVE_JAVACOMP=1 506 fi 507 fi 508 fi 509 fi 510 fi 511 fi 512 fi 513 fi 514 if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_JAVAC_IN_PATH"; then 515 dnl Test whether javac is usable. 516 if { javac -version >/dev/null 2>/dev/null || test $? -le 2; } \ 517 && ( if javac -help 2>&1 >/dev/null | grep at.dms.kjc.Main >/dev/null && javac -help 2>/dev/null | grep 'released.*2000' >/dev/null ; then exit 1; else exit 0; fi ); then 518 dnl OK, javac works. 519 dnl Now test whether it supports the desired target-version and 520 dnl source-version. 521 rm -f conftest.class 522 if { echo "$as_me:__oline__: javac -d . conftest.java" >&AS_MESSAGE_LOG_FD 523 javac -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 524 } \ 525 && test -f conftest.class \ 526 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 527 dnl Try adding -source option if it is useful. 528 rm -f conftest.class 529 rm -f conftestfail.class 530 if { echo "$as_me:__oline__: javac -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 531 javac -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 532 } \ 533 && test -f conftest.class \ 534 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \ 535 && { echo "$as_me:__oline__: javac -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 536 javac -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 537 } \ 538 && test -f conftestfail.class \ 539 && ! { echo "$as_me:__oline__: javac -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 540 javac -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 541 }; then 542 CONF_JAVAC="javac -source $source_version" 543 HAVE_JAVAC=1 544 HAVE_JAVACOMP=1 545 else 546 CONF_JAVAC="javac" 547 HAVE_JAVAC=1 548 HAVE_JAVACOMP=1 549 fi 550 else 551 dnl Try with -target option alone. (Sun javac 1.3.1 has the -target 552 dnl option but no -source option.) 553 rm -f conftest.class 554 if { echo "$as_me:__oline__: javac -target $target_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 555 javac -target "$target_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 556 } \ 557 && test -f conftest.class \ 558 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 559 dnl Try adding -source option if it is useful. 560 rm -f conftest.class 561 rm -f conftestfail.class 562 if { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 563 javac -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 564 } \ 565 && test -f conftest.class \ 566 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD \ 567 && { echo "$as_me:__oline__: javac -target $target_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 568 javac -target "$target_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 569 } \ 570 && test -f conftestfail.class \ 571 && ! { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftestfail.java" >&AS_MESSAGE_LOG_FD 572 javac -target "$target_version" -source "$source_version" -d . conftestfail.java >&AS_MESSAGE_LOG_FD 2>&1 573 }; then 574 CONF_JAVAC="javac -target $target_version -source $source_version" 575 HAVE_JAVAC=1 576 HAVE_JAVACOMP=1 577 else 578 CONF_JAVAC="javac -target $target_version" 579 HAVE_JAVAC=1 580 HAVE_JAVACOMP=1 581 fi 582 else 583 dnl Maybe this -target option requires a -source option? Try with 584 dnl -target and -source options. (Supported by Sun javac 1.4 and 585 dnl higher.) 586 rm -f conftest.class 587 if { echo "$as_me:__oline__: javac -target $target_version -source $source_version -d . conftest.java" >&AS_MESSAGE_LOG_FD 588 javac -target "$target_version" -source "$source_version" -d . conftest.java >&AS_MESSAGE_LOG_FD 2>&1 589 } \ 590 && test -f conftest.class \ 591 && expr `func_classfile_version conftest.class` '<=' $cfversion >/dev/null 2>&AS_MESSAGE_LOG_FD; then 592 CONF_JAVAC="javac -target $target_version -source $source_version" 593 HAVE_JAVAC=1 594 HAVE_JAVACOMP=1 595 fi 596 fi 597 fi 598 fi 599 fi 600 if test -z "$HAVE_JAVACOMP" && test -n "$HAVE_JIKES_IN_PATH"; then 601 dnl Test whether jikes is usable. 602 if { jikes >/dev/null 2>/dev/null || test $? = 1; } \ 603 && ( 604 # See if the existing CLASSPATH is sufficient to make jikes work. 605 unset JAVA_HOME 606 jikes conftestlib.java >&AS_MESSAGE_LOG_FD 2>&1 607 error=$? 608 rm -f conftestlib.class 609 exit $error 610 ); then 611 dnl OK, jikes works. 612 dnl Now test whether it supports the desired target-version and 613 dnl source-version. 614 if test "$source_version" = 1.3; then 615 CONF_JAVAC="jikes" 616 HAVE_JIKES=1 617 HAVE_JAVACOMP=1 618 fi 619 fi 620 fi 621 fi 622 rm -f conftest*.java conftest*.class 623 if test -n "$HAVE_JAVACOMP"; then 624 ac_result="$CONF_JAVAC" 625 else 626 ac_result="no" 627 fi 628 AC_MSG_RESULT([$ac_result]) 629 AC_SUBST(CONF_JAVAC) 630 AC_SUBST(CLASSPATH) 631 AC_SUBST(CLASSPATH_SEPARATOR) 632 AC_SUBST(HAVE_JAVAC_ENVVAR) 633 AC_SUBST(HAVE_GCJ_C) 634 AC_SUBST(HAVE_JAVAC) 635 AC_SUBST(HAVE_JIKES) 636]) 637