[gdb/testsuite] Fix gdb.cp/*.exp for remote host

Fix a few test-cases in gdb.cp/*.exp for remote host using new proc
include_file.

Tested on x86_64-linux.

gdb/testsuite/gdb.cp/breakpoint-locs.exp

@@ -19,6 +19,8 @@ require allow_cplus_tests
 
 standard_testfile .cc breakpoint-locs-2.cc
 
+include_file breakpoint-locs.h
+
 if { [prepare_for_testing "failed to prepare" $testfile "$srcfile $srcfile2"\
 	  {debug c++}] } {
     return -1

gdb/testsuite/gdb.cp/filename.exp

@@ -17,6 +17,8 @@ require allow_cplus_tests
 
 standard_testfile .cc
 
+include_file includefile
+
 if {[prepare_for_testing "failed to prepare" $testfile $srcfile {debug c++}]} {
     return -1
 }

gdb/testsuite/gdb.cp/gdb2384.exp

@@ -25,6 +25,8 @@ require allow_cplus_tests allow_shlib_tests
 
 standard_testfile .cc gdb2384-base.cc
 
+include_file gdb2384-base.h
+
 set sofile [standard_output_file gdb2384-base.so]
 
 if { [gdb_compile_shlib $srcdir/$subdir/$srcfile2 $sofile {debug c++}] != ""

gdb/testsuite/gdb.cp/hang.exp

@@ -18,6 +18,8 @@ require allow_cplus_tests
 
 standard_testfile hang1.cc hang2.cc hang3.cc
 
+include_file hang.H
+
 if {[prepare_for_testing "failed to prepare" $testfile \
 	 [list $srcfile $srcfile2 $srcfile3] {debug c++}]} {
     return -1

gdb/testsuite/gdb.cp/m-static.exp

@@ -27,6 +27,8 @@ require allow_cplus_tests
 
 standard_testfile .cc m-static1.cc
 
+include_file m-static.h
+
 set flags [list debug c++]
 if { [test_compiler_info gcc-*] && [gcc_major_version] >= 10 } {
     # Work around PR gcc/101452.
@@ -181,7 +183,11 @@ gdb_test "print test4.somewhere" "\\$\[0-9\].* = 3.14\[0-9\]*" "static const flo
 
 # Also make sure static const members can be found via "info var".
 if { $non_dwarf } { setup_xfail *-*-* }
-gdb_test "info variable everywhere" "File .*/m-static\[.\]h.*const int gnu_obj_4::everywhere;"
+gdb_test "info variable everywhere" \
+    [multi_line \
+	 "File (.*/)?m-static\[.\]h:" \
+	 "$decimal:\tconst int gnu_obj_4::everywhere;" \
+	 ".*"]
 
 # Perhaps at some point test4 should also include a test for a static
 # const int that was initialized in the header file.  But I'm not sure

gdb/testsuite/gdb.cp/mb-inline.exp

@@ -22,6 +22,7 @@ require allow_cplus_tests
 
 standard_testfile mb-inline1.cc mb-inline2.cc
 set hdrfile "${testfile}.h"
+include_file $hdrfile
 
 if {[prepare_for_testing "failed to prepare" $testfile \
 	 [list $srcfile $srcfile2] {debug c++}]} {

gdb/testsuite/gdb.cp/minsym-fallback.exp

@@ -18,6 +18,9 @@
 # a different file providing only ELF symbols.
 
 standard_testfile .cc minsym-fallback-main.cc
+
+include_file minsym-fallback.h
+
 set executable $testfile
 set objfile [standard_output_file ${testfile}.o]
 set objmainfile [standard_output_file ${testfile}-main.o]

gdb/testsuite/gdb.cp/ovsrch.exp

@@ -57,6 +57,8 @@ require allow_cplus_tests
 # Test for c++/11734
 standard_testfile ovsrch1.cc ovsrch2.cc ovsrch3.cc ovsrch4.cc
 
+include_file ovsrch.h
+
 if {[prepare_for_testing "failed to prepare" $testfile \
 	 [list $srcfile $srcfile2 $srcfile3 $srcfile4] {c++ debug}]} {
     return -1

gdb/testsuite/gdb.cp/pr10728.exp

@@ -22,6 +22,8 @@ require allow_cplus_tests
 load_lib "cp-support.exp"
 
 standard_testfile pr10728-x.cc pr10728-y.cc
+include_file pr10728-x.h
+
 set tfx [standard_output_file pr10728-x.o]
 set tfy [standard_output_file pr10728-y.o]
 

gdb/testsuite/gdb.cp/rtti.exp

@@ -34,6 +34,8 @@ require allow_cplus_tests
 
 standard_testfile rtti1.cc rtti2.cc
 
+include_file rtti.h
+
 if {[prepare_for_testing "failed to prepare" $testfile \
 	 [list $srcfile $srcfile2] {debug c++}]} {
     return -1

gdb/testsuite/gdb.cp/stub-array-size.exp

@@ -22,6 +22,8 @@ require allow_cplus_tests
 
 standard_testfile .cc stub-array-size2.cc
 
+include_file stub-array-size.h
+
 if {[prepare_for_testing "failed to prepare" $testfile "$srcfile $srcfile2" \
 	{c++ debug}]} {
     return -1

gdb/testsuite/gdb.cp/subtypes.exp

@@ -22,6 +22,8 @@ load_lib "cp-support.exp"
 
 standard_testfile .cc subtypes-2.cc
 
+include_file subtypes.h
+
 if {[prepare_for_testing "failed to prepare" $testfile \
 	 [list $srcfile $srcfile2] \
 	 {debug c++ additional_flags=-std=c++11}]} {

gdb/testsuite/lib/gdb.exp

@@ -9554,6 +9554,18 @@ gdb_caching_proc have_compile_flag { flag } {
 		additional_flags=$flag]
 }
 
+# Handle include file $srcdir/$subdir/FILE.
+
+proc include_file { file } {
+    set file [file join $::srcdir $::subdir $file]
+    if { [is_remote host] } {
+	set res [remote_download host $file]
+    } else {
+	set res $file
+    }
+
+    return $res
+}
 
 # Handle include file FILE, and if necessary update compiler flags variable
 # FLAGS.