On x86-64 Fedora 26, when building with the system gcc, I get:
../../binutils-gdb/gdb/dwarf-index-write.c: In member function ‘void
debug_names::build()’:
../../binutils-gdb/gdb/dwarf-index-write.c:705:13: error: ‘pow’ is not
a member of ‘std’
There are actually more messages, but this is sufficient to show the
problem.
The fix is to include <cmath>.
I'm checking this in as obvious. Tested by building.
gdb/ChangeLog
2018-03-27 Tom Tromey <tom@tromey.com>
* dwarf-index-write.c: Include <cmath>.
---
gdb/ChangeLog | 4 ++++
gdb/dwarf-index-write.c | 1 +
2 files changed, 5 insertions(+)
diff --git a/gdb/dwarf-index-write.c b/gdb/dwarf-index-write.c
index 3059e0b776..058712d9e2 100644
--- a/gdb/dwarf-index-write.c
+++ b/gdb/dwarf-index-write.c
@@ -34,6 +34,7 @@
#include "psympriv.h"
#include <algorithm>
+#include <cmath>
#include <set>
#include <unordered_map>
#include <unordered_set>