/[svn]/linuxsampler/trunk/configure.ac
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revision 3733 by schoenebeck, Sat Feb 1 18:11:20 2020 UTC revision 3739 by schoenebeck, Tue Feb 4 14:51:15 2020 UTC
# Line 3  Line 3 
3    
4  m4_define(linuxsampler_release_major, 2)  m4_define(linuxsampler_release_major, 2)
5  m4_define(linuxsampler_release_minor, 1)  m4_define(linuxsampler_release_minor, 1)
6  m4_define(linuxsampler_release_build, 1.svn46)  m4_define(linuxsampler_release_build, 1.svn47)
7    
8    
9  AC_INIT([linuxsampler],[linuxsampler_release_major.linuxsampler_release_minor.linuxsampler_release_build])  AC_INIT([linuxsampler],[linuxsampler_release_major.linuxsampler_release_minor.linuxsampler_release_build])
# Line 195  else Line 195  else
195  fi  fi
196    
197    
198    # check whether C++ compiler supports "designated initializers"
199    echo -n "Checking whether C++ compiler supports designated initializers (partly)... "
200    AC_LANG_PUSH([C++])
201    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
202        #include <stdlib.h>
203        struct Foo {
204            int   a;
205            float b;
206            bool  c;
207            char  d;
208        };
209        static void bar(Foo o) {
210        }
211        int main() {
212            bar({
213              .a = 2,
214              .b = 4.3f,
215              .c = true,
216              .d = 'z'
217            });
218            return 0;
219        }
220        ]])],
221        [cxx_designated_init_partly="yes"],
222        [cxx_designated_init_partly="no"]
223    )
224    AC_LANG_POP([C++])
225    if test $cxx_designated_init_partly = "yes"; then
226        echo "yes"
227    else
228        echo "NO"
229        echo '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
230        echo '!                                                             !'
231        echo '! ERROR: Selected C++ compiler does not support designated    !'
232        echo '! initializers at all, not even partly!                       !'
233        echo '!                                                             !'
234        echo '! Please either update your C++ compiler or select a          !'
235        echo '! different compiler (e.g. GCC >= 8 or clang >= 5). If you    !'
236        echo '! have several C++ compilers installed on your machine, you   !'
237        echo '! can easily select a different compiler by environment       !'
238        echo '! variable, e.g. to compile with clang instead:               !'
239        echo '!                                                             !'
240        echo '! CXX=clang++ CC=clang ./configure && make                    !'
241        echo '!                                                             !'
242        echo '!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!'
243        exit -1
244    fi
245    echo -n "Checking whether C++ compiler fully supports designated initializers... "
246    AC_LANG_PUSH([C++])
247    AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
248        #include <stdlib.h>
249        struct Foo {
250            int   a;
251            float b;
252            bool  c;
253            char  d;
254        };
255        static void bar(Foo o) {
256        }
257        int main() {
258            bar({
259              .d = 'z',
260              .a = 2
261            });
262            return 0;
263        }
264        ]])],
265        [cxx_designated_init_fully="yes"],
266        [cxx_designated_init_fully="no"]
267    )
268    AC_LANG_POP([C++])
269    if test $cxx_designated_init_fully = "yes"; then
270        echo "yes"
271    else
272        echo 'NO'
273        echo '***************************************************************'
274        echo '*                                                             *'
275        echo '* WARNING: Selected C++ compiler does not fully support       *'
276        echo '* designated initializers (only partly)!                      *'
277        echo '*                                                             *'
278        echo '* You will be able to compile LinuxSampler, but you will not  *'
279        echo '* be able to compile the test cases. Consider updating your   *'
280        echo '* C++ compiler or switching to a different compiler. Chances  *'
281        echo '* are that LinuxSampler will soon no longer support your      *'
282        echo '* compiler.                                                   *'
283        echo '*                                                             *'
284        echo '* If you have several C++ compilers installed on your machine,*'
285        echo '* you can easily select a different compiler by environment   *'
286        echo '* variable, e.g. to compile with clang instead:               *'
287        echo '*                                                             *'
288        echo '* CXX=clang++ CC=clang ./configure && make                    *'
289        echo '*                                                             *'
290        echo '***************************************************************'
291    fi
292    
293    
294  # In case Bison is available, determine the exact version, since we need to  # In case Bison is available, determine the exact version, since we need to
295  # use different custom parser code for Bison 2.x vs. Bison 3.x generated  # use different custom parser code for Bison 2.x vs. Bison 3.x generated
296  # parser yacc tables.  # parser yacc tables.
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