Configure attempts to compile c++ code with gcc but not with g++ #160
Description
./configure fails with error
checking for library containing clock_gettime... no
configure: error: librt not found
while attempting to compile c++ code with gcc compiler:
configure:6260: gcc -o conftest -g -O2 conftest.c >&5
conftest.c:35:1: error: unknown type name 'namespace'
35 | namespace conftest {
| ^~~~~~~~~
conftest.c:35:20: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
35 | namespace conftest {
| ^
conftest.c: In function 'main':
conftest.c:41:8: error: 'conftest' undeclared (first use in this function)
41 | return conftest::clock_gettime ();
| ^~~~~~~~
conftest.c:41:8: note: each undeclared identifier is reported only once for each function it appears in
conftest.c:41:16: error: expected ';' before '::' token
41 | return conftest::clock_gettime ();
| ^~
| ;
./configure CC=g++ may be used as workaround.