Remove C-specific warnings from common warning set

Whoops, these are C specific, but I somehow missed the warnings before:

  cc1plus: warning: command line option ‘-Wmissing-prototypes’ is valid for C/ObjC but not for C++ [enabled by default]
  cc1plus: warning: command line option ‘-Wdeclaration-after-statement’ is valid for C/ObjC but not for C++ [enabled by default]
  cc1plus: warning: command line option ‘-Wmissing-parameter-type’ is valid for C/ObjC but not for C++ [enabled by default]
  cc1plus: warning: command line option ‘-Wold-style-declaration’ is valid for C/ObjC but not for C++ [enabled by default]
  cc1plus: warning: command line option ‘-Wold-style-definition’ is valid for C/ObjC but not for C++ [enabled by default]

gdb/ChangeLog:
2015-03-07  Pedro Alves  <palves@redhat.com>

	* configure.ac (build_warnings): Move -Wmissing-prototypes
	-Wdeclaration-after-statement -Wmissing-parameter-type
	-Wold-style-declaration -Wold-style-definition to the C-specific
	set.
	* configure: Regenerate.

gdb/gdbserver/ChangeLog:
2015-03-07  Pedro Alves  <palves@redhat.com>

	* configure.ac (build_warnings): Move
	-Wdeclaration-after-statement to the C-specific set.
	* configure: Regenerate.

6 files changed, 32 insertions, 12 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 522f2bb..eee5bad 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,13 @@
 2015-03-07  Pedro Alves  <palves@redhat.com>
 
+	* configure.ac (build_warnings): Move -Wmissing-prototypes
+	-Wdeclaration-after-statement -Wmissing-parameter-type
+	-Wold-style-declaration -Wold-style-definition to the C-specific
+	set.
+	* configure: Regenerate.
+
+2015-03-07  Pedro Alves  <palves@redhat.com>
+
 	* common/gdb_socket.h: New file.
 	* ser-tcp.c: Include gdb_socket.h.  Don't include netinet/in.h nor
 	sys/socket.h.
diff --git a/gdb/configure b/gdb/configure
index 3297d37..1ddcc62 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -13383,18 +13383,19 @@ if test "${ERROR_ON_WARNING}" = yes ; then
 fi
 
 # These options work in either C or C++ modes.
-build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
+build_warnings="-Wall -Wpointer-arith \
 -Wno-unused -Wunused-value -Wunused-function \
--Wno-switch -Wno-char-subscripts -Wmissing-prototypes \
--Wdeclaration-after-statement -Wempty-body -Wmissing-parameter-type \
--Wold-style-declaration -Wold-style-definition"
+-Wno-switch -Wno-char-subscripts \
+-Wempty-body"
 
 # Now add in C and C++ specific options, depending on mode.
 if test "$enable_build_with_cxx" = "yes"; then
    build_warnings="$build_warnings -Wno-sign-compare -Wno-write-strings \
 -Wno-narrowing"
 else
-   build_warnings="$build_warnings -Wpointer-sign"
+   build_warnings="$build_warnings -Wpointer-sign -Wmissing-prototypes \
+-Wdeclaration-after-statement -Wmissing-parameter-type \
+-Wold-style-declaration -Wold-style-definition"
 fi
 
 # Enable -Wno-format by default when using gcc on mingw since many
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 0898d0e..a4886c9 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1978,18 +1978,19 @@ if test "${ERROR_ON_WARNING}" = yes ; then
 fi
 
 # These options work in either C or C++ modes.
-build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
+build_warnings="-Wall -Wpointer-arith \
 -Wno-unused -Wunused-value -Wunused-function \
--Wno-switch -Wno-char-subscripts -Wmissing-prototypes \
--Wdeclaration-after-statement -Wempty-body -Wmissing-parameter-type \
--Wold-style-declaration -Wold-style-definition"
+-Wno-switch -Wno-char-subscripts \
+-Wempty-body"
 
 # Now add in C and C++ specific options, depending on mode.
 if test "$enable_build_with_cxx" = "yes"; then
    build_warnings="$build_warnings -Wno-sign-compare -Wno-write-strings \
 -Wno-narrowing"
 else
-   build_warnings="$build_warnings -Wpointer-sign"
+   build_warnings="$build_warnings -Wpointer-sign -Wmissing-prototypes \
+-Wdeclaration-after-statement -Wmissing-parameter-type \
+-Wold-style-declaration -Wold-style-definition"
 fi
 
 # Enable -Wno-format by default when using gcc on mingw since many
diff --git a/gdb/gdbserver/ChangeLog b/gdb/gdbserver/ChangeLog
index 8aa38a3..b27090e 100644
--- a/gdb/gdbserver/ChangeLog
+++ b/gdb/gdbserver/ChangeLog
@@ -1,5 +1,11 @@
 2015-03-07  Pedro Alves  <palves@redhat.com>
 
+	* configure.ac (build_warnings): Move
+	-Wdeclaration-after-statement to the C-specific set.
+	* configure: Regenerate.
+
+2015-03-07  Pedro Alves  <palves@redhat.com>
+
 	* gdbreplay.c: No longer include <netinet/in.h>, <sys/socket.h>,
 	or <winsock2.h> here.  Instead include "gdb_socket.h".
 	(remote_open): Use union gdb_sockaddr_u.
diff --git a/gdb/gdbserver/configure b/gdb/gdbserver/configure
index a14def9..cbf4b4e 100755
--- a/gdb/gdbserver/configure
+++ b/gdb/gdbserver/configure
@@ -5794,13 +5794,15 @@ if test "${ERROR_ON_WARNING}" = yes ; then
     WERROR_CFLAGS="-Werror"
 fi
 
-build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
+build_warnings="-Wall -Wpointer-arith \
 -Wformat-nonliteral -Wno-char-subscripts -Wempty-body"
 
 # Now add in C and C++ specific options, depending on mode.
 if test "$enable_build_with_cxx" = "yes"; then
    build_warnings="$build_warnings -Wno-sign-compare -Wno-write-strings \
 -Wno-narrowing"
+else
+   build_warnings="$build_warnings -Wdeclaration-after-statement"
 fi
 
 # The set of warnings supported by a C++ compiler is not the same as
diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
index cefc69e..0381aa9 100644
--- a/gdb/gdbserver/configure.ac
+++ b/gdb/gdbserver/configure.ac
@@ -167,13 +167,15 @@ if test "${ERROR_ON_WARNING}" = yes ; then
     WERROR_CFLAGS="-Werror"
 fi
 
-build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
+build_warnings="-Wall -Wpointer-arith \
 -Wformat-nonliteral -Wno-char-subscripts -Wempty-body"
 
 # Now add in C and C++ specific options, depending on mode.
 if test "$enable_build_with_cxx" = "yes"; then
    build_warnings="$build_warnings -Wno-sign-compare -Wno-write-strings \
 -Wno-narrowing"
+else
+   build_warnings="$build_warnings -Wdeclaration-after-statement"
 fi
 
 # The set of warnings supported by a C++ compiler is not the same as