1dnl ## 2dnl ## SA - OSSP Socket Abstraction Library 3dnl ## Copyright (c) 2001-2003 Ralf S. Engelschall <rse@engelschall.com> 4dnl ## Copyright (c) 2001-2003 The OSSP Project <http://www.ossp.org/> 5dnl ## Copyright (c) 2001-2003 Cable & Wireless Deutschland <http://www.cw.com/de/> 6dnl ## 7dnl ## This file is part of OSSP SA, a socket abstraction library which 8dnl ## can be found at http://www.ossp.org/pkg/sa/. 9dnl ## 10dnl ## Permission to use, copy, modify, and distribute this software for 11dnl ## any purpose with or without fee is hereby granted, provided that 12dnl ## the above copyright notice and this permission notice appear in all 13dnl ## copies. 14dnl ## 15dnl ## THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 16dnl ## WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 17dnl ## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18dnl ## IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR 19dnl ## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 20dnl ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 21dnl ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 22dnl ## USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 23dnl ## ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24dnl ## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25dnl ## OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26dnl ## SUCH DAMAGE. 27dnl ## 28dnl ## aclocal.m4: GNU Autoconf local macro definitions 29dnl ## 30 31dnl ## 32dnl ## Check whether compiler option works 33dnl ## 34dnl ## configure.in: 35dnl ## AC_COMPILER_OPTION(<name>, <display>, <option>, 36dnl ## <action-success>, <action-failure>) 37dnl ## 38 39AC_DEFUN(AC_COMPILER_OPTION,[dnl 40AC_MSG_CHECKING(whether compiler option(s) $2 work) 41AC_CACHE_VAL(ac_cv_compiler_option_$1,[ 42SAVE_CFLAGS="$CFLAGS" 43CFLAGS="$CFLAGS $3" 44AC_TRY_COMPILE([],[], ac_cv_compiler_option_$1=yes, ac_cv_compiler_option_$1=no) 45CFLAGS="$SAVE_CFLAGS" 46])dnl 47if test ".$ac_cv_compiler_option_$1" = .yes; then 48 ifelse([$4], , :, [$4]) 49else 50 ifelse([$5], , :, [$5]) 51fi 52AC_MSG_RESULT([$ac_cv_compiler_option_$1]) 53])dnl 54 55dnl ## 56dnl ## Debugging Support 57dnl ## 58dnl ## configure.in: 59dnl ## AC_CHECK_DEBUGGING 60dnl ## 61 62AC_DEFUN(AC_CHECK_DEBUGGING,[dnl 63AC_ARG_ENABLE(debug,dnl 64[ --enable-debug build for debugging (default=no)], 65[dnl 66if test ".$ac_cv_prog_gcc" = ".yes"; then 67 case "$CFLAGS" in 68 *-O* ) ;; 69 * ) CFLAGS="$CFLAGS -O2" ;; 70 esac 71 case "$CFLAGS" in 72 *-g* ) ;; 73 * ) CFLAGS="$CFLAGS -g" ;; 74 esac 75 case "$CFLAGS" in 76 *-pipe* ) ;; 77 * ) AC_COMPILER_OPTION(pipe, -pipe, -pipe, CFLAGS="$CFLAGS -pipe") ;; 78 esac 79 AC_COMPILER_OPTION(defdbg, -DDEBUG, -DDEBUG, CFLAGS="$CFLAGS -DDEBUG") 80 CFLAGS="$CFLAGS -pedantic" 81 CFLAGS="$CFLAGS -Wall" 82 WMORE="-Wshadow -Wpointer-arith -Wcast-align -Winline" 83 WMORE="$WMORE -Wmissing-prototypes -Wmissing-declarations -Wnested-externs" 84 AC_COMPILER_OPTION(wmore, -W<xxx>, $WMORE, CFLAGS="$CFLAGS $WMORE") 85 AC_COMPILER_OPTION(wnolonglong, -Wno-long-long, -Wno-long-long, CFLAGS="$CFLAGS -Wno-long-long") 86else 87 case "$CFLAGS" in 88 *-g* ) ;; 89 * ) CFLAGS="$CFLAGS -g" ;; 90 esac 91fi 92msg="enabled" 93],[ 94if test ".$ac_cv_prog_gcc" = ".yes"; then 95case "$CFLAGS" in 96 *-pipe* ) ;; 97 * ) AC_COMPILER_OPTION(pipe, -pipe, -pipe, CFLAGS="$CFLAGS -pipe") ;; 98esac 99fi 100case "$CFLAGS" in 101 *-g* ) CFLAGS=`echo "$CFLAGS" |\ 102 sed -e 's/ -g / /g' -e 's/ -g$//' -e 's/^-g //g' -e 's/^-g$//'` ;; 103esac 104case "$CXXFLAGS" in 105 *-g* ) CXXFLAGS=`echo "$CXXFLAGS" |\ 106 sed -e 's/ -g / /g' -e 's/ -g$//' -e 's/^-g //g' -e 's/^-g$//'` ;; 107esac 108msg=disabled 109])dnl 110AC_MSG_CHECKING(for compilation debug mode) 111AC_MSG_RESULT([$msg]) 112if test ".$msg" = .enabled; then 113 enable_shared=no 114fi 115]) 116 117dnl ## 118dnl ## Check for C99 va_copy() implementation 119dnl ## (and provide fallback implementation if neccessary) 120dnl ## 121dnl ## configure.in: 122dnl ## AC_CHECK_VA_COPY 123dnl ## foo.c: 124dnl ## #include "config.h" 125dnl ## [...] 126dnl ## va_copy(d,s) 127dnl ## 128dnl ## This check is rather complex: first because we really have to 129dnl ## try various possible implementations in sequence and second, we 130dnl ## cannot define a macro in config.h with parameters directly. 131dnl ## 132 133dnl # test program for va_copy() implementation 134changequote(<<,>>) 135m4_define(__va_copy_test, <<[ 136#include <stdlib.h> 137#include <stdarg.h> 138#include <string.h> 139#define DO_VA_COPY(d, s) $1 140void test(char *str, ...) 141{ 142 va_list ap, ap2; 143 int i; 144 va_start(ap, str); 145 DO_VA_COPY(ap2, ap); 146 for (i = 1; i <= 9; i++) { 147 int k = (int)va_arg(ap, int); 148 if (k != i) 149 abort(); 150 } 151 DO_VA_COPY(ap, ap2); 152 for (i = 1; i <= 9; i++) { 153 int k = (int)va_arg(ap, int); 154 if (k != i) 155 abort(); 156 } 157 va_end(ap); 158} 159int main(int argc, char *argv[]) 160{ 161 test("test", 1, 2, 3, 4, 5, 6, 7, 8, 9); 162 exit(0); 163} 164]>>) 165changequote([,]) 166 167dnl # test driver for va_copy() implementation 168m4_define(__va_copy_check, [ 169 AH_VERBATIM($1, 170[/* Predefined possible va_copy() implementation (id: $1) */ 171#define __VA_COPY_USE_$1(d, s) $2]) 172 if test ".$ac_cv_va_copy" = .; then 173 AC_TRY_RUN(__va_copy_test($2), [ac_cv_va_copy="$1"]) 174 fi 175]) 176 177dnl # Autoconf check for va_copy() implementation checking 178AC_DEFUN(AC_CHECK_VA_COPY,[ 179 dnl # provide Autoconf display check message 180 AC_MSG_CHECKING(for va_copy() function) 181 dnl # check for various implementations in priorized sequence 182 AC_CACHE_VAL(ac_cv_va_copy, [ 183 ac_cv_va_copy="" 184 dnl # 1. check for standardized C99 macro 185 __va_copy_check(C99, [va_copy((d), (s))]) 186 dnl # 2. check for alternative/deprecated GCC macro 187 __va_copy_check(GCM, [VA_COPY((d), (s))]) 188 dnl # 3. check for internal GCC macro (high-level define) 189 __va_copy_check(GCH, [__va_copy((d), (s))]) 190 dnl # 4. check for internal GCC macro (built-in function) 191 __va_copy_check(GCB, [__builtin_va_copy((d), (s))]) 192 dnl # 5. check for assignment approach (assuming va_list is a struct) 193 __va_copy_check(ASS, [do { (d) = (s); } while (0)]) 194 dnl # 6. check for assignment approach (assuming va_list is a pointer) 195 __va_copy_check(ASP, [do { *(d) = *(s); } while (0)]) 196 dnl # 7. check for memory copying approach (assuming va_list is a struct) 197 __va_copy_check(CPS, [memcpy((void *)&(d), (void *)&(s), sizeof((s)))]) 198 dnl # 8. check for memory copying approach (assuming va_list is a pointer) 199 __va_copy_check(CPP, [memcpy((void *)(d), (void *)(s), sizeof(*(s)))]) 200 if test ".$ac_cv_va_copy" = .; then 201 AC_ERROR([no working implementation found]) 202 fi 203 ]) 204 dnl # optionally activate the fallback implementation 205 if test ".$ac_cv_va_copy" = ".C99"; then 206 AC_DEFINE(HAVE_VA_COPY, 1, [Define if va_copy() macro exists (and no fallback implementation is required)]) 207 fi 208 dnl # declare which fallback implementation to actually use 209 AC_DEFINE_UNQUOTED([__VA_COPY_USE], [__VA_COPY_USE_$ac_cv_va_copy], 210 [Define to id of used va_copy() implementation]) 211 dnl # provide activation hook for fallback implementation 212 AH_VERBATIM([__VA_COPY_ACTIVATION], 213[/* Optional va_copy() implementation activation */ 214#ifndef HAVE_VA_COPY 215#define va_copy(d, s) __VA_COPY_USE(d, s) 216#endif 217]) 218 dnl # provide Autoconf display result message 219 if test ".$ac_cv_va_copy" = ".C99"; then 220 AC_MSG_RESULT([yes]) 221 else 222 AC_MSG_RESULT([no (using fallback implementation)]) 223 fi 224]) 225 226dnl ## 227dnl ## Check for an external/extension library. 228dnl ## - is aware of <libname>-config style scripts 229dnl ## - searches under standard paths include, lib, etc. 230dnl ## - searches under subareas like .libs, etc. 231dnl ## 232dnl ## configure.in: 233dnl ## AC_CHECK_EXTLIB(<realname>, <libname>, <func>, <header>, 234dnl ## [<success-action> [, <fail-action>]]) 235dnl ## Makefile.in: 236dnl ## CFLAGS = @CFLAGS@ 237dnl ## LDFLAGS = @LDFLAGS@ 238dnl ## LIBS = @LIBS@ 239dnl ## shell: 240dnl ## $ ./configure --with-<libname>[=DIR] 241dnl ## 242 243AC_DEFUN(AC_CHECK_EXTLIB,[dnl 244AC_ARG_WITH($2, [dnl 245[ --with-]m4_substr([$2[[=DIR]] ], 0, 19)[build with external $1 library (default=no)]], [dnl 246 if test ".$with_$2" = .yes; then 247 # via config script in PATH 248 $2_version=`($2-config --version) 2>/dev/null` 249 if test ".$$2_version" != .; then 250 CPPFLAGS="$CPPFLAGS `$2-config --cflags`" 251 CFLAGS="$CFLAGS `$2-config --cflags`" 252 LDFLAGS="$LDFLAGS `$2-config --ldflags`" 253 fi 254 else 255 if test -d "$with_$2"; then 256 found=0 257 # via config script 258 for dir in $with_$2/bin $with_$2; do 259 if test -f "$dir/$2-config" && test ! -f "$dir/$2-config.in"; then 260 $2_version=`($dir/$2-config --version) 2>/dev/null` 261 if test ".$$2_version" != .; then 262 CPPFLAGS="$CPPFLAGS `$dir/$2-config --cflags`" 263 CFLAGS="$CFLAGS `$dir/$2-config --cflags`" 264 LDFLAGS="$LDFLAGS `$dir/$2-config --ldflags`" 265 found=1 266 break 267 fi 268 fi 269 done 270 # in standard sub-areas 271 if test ".$found" = .0; then 272 for dir in $with_$2/include/$2 $with_$2/include $with_$2; do 273 if test -f "$dir/$4"; then 274 CPPFLAGS="$CPPFLAGS -I$dir" 275 CFLAGS="$CFLAGS -I$dir" 276 found=1 277 break 278 fi 279 done 280 for dir in $with_$2/lib/$2 $with_$2/lib $with_$2; do 281 if test -f "$dir/lib$2.la" && test -d "$dir/.libs"; then 282 LDFLAGS="$LDFLAGS -L$dir -L$dir/.libs" 283 found=1 284 break 285 elif test -f "$dir/lib$2.a" || test -f "$dir/lib$2.so"; then 286 LDFLAGS="$LDFLAGS -L$dir" 287 found=1 288 break 289 fi 290 done 291 fi 292 # in any sub-area 293 if test ".$found" = .0; then 294changequote(, )dnl 295 for file in x `find $with_$2 -name "$4" -type f -print`; do 296 test .$file = .x && continue 297 dir=`echo $file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'` 298 CPPFLAGS="$CPPFLAGS -I$dir" 299 CFLAGS="$CFLAGS -I$dir" 300 done 301 for file in x `find $with_$2 -name "lib$2.[aso]" -type f -print`; do 302 test .$file = .x && continue 303 dir=`echo $file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'` 304 LDFLAGS="$LDFLAGS -L$dir" 305 done 306changequote([, ])dnl 307 fi 308 fi 309 fi 310 AC_HAVE_HEADERS($4) 311 AC_CHECK_LIB($2, $3) 312 with_$2=yes 313 ac_var="ac_cv_header_`echo $4 | sed 'y%./+-%__p_%'`" 314 eval "ac_val=\$$ac_var" 315 if test ".$ac_val" != .yes; then 316 with_$2=no 317 fi 318 if test ".$ac_cv_lib_$2_$3" != .yes; then 319 with_$2=no 320 fi 321 if test ".$with_$2" = .no; then 322 AC_ERROR([Unable to find $1 library]) 323 fi 324 ], [dnl 325if test ".$with_$2" = .; then 326 with_$2=no 327fi 328 ])dnl 329AC_MSG_CHECKING(whether to build against external $1 library) 330if test ".$with_$2" = .yes; then 331 ifelse([$5], , :, [$5]) 332else 333 ifelse([$6], , :, [$6]) 334fi 335AC_MSG_RESULT([$with_$2]) 336])dnl 337 338dnl ## 339dnl ## Check whether to activate Dmalloc 340dnl ## 341dnl ## configure.in: 342dnl ## AC_CHECK_DMALLOC 343dnl ## 344 345AC_DEFUN(AC_CHECK_DMALLOC,[dnl 346AC_CHECK_EXTLIB(Dmalloc, dmalloc, dmalloc_debug, dmalloc.h, 347 AC_DEFINE(WITH_DMALLOC, 1, [define if building with Dmalloc])) 348if test ".$with_dmalloc" = .yes; then 349 CFLAGS=`echo "X$CFLAGS" | sed -e 's;^X;;' -e 's; -Wredundant-decls;;'` 350fi 351])dnl 352 353