Make gdb.base/jit.exp binaries unique

This testcase compiles the same program and library differently
multiple times using the same file names.  Make them unique, to make
it easier to debug test problems.

gdb/testsuite/ChangeLog:
2016-03-31  Pedro Alves  <palves@redhat.com>

	PR gdb/19858
	* gdb.base/jit.exp (compile_jit_test): Add intro comment.  Add
	BINSUFFIX parameter, and handle it.
	(top level): Adjust calls compile_jit_test.

2 files changed, 17 insertions, 9 deletions

diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog
index 1d9a16f..714615b 100644
--- a/gdb/testsuite/ChangeLog
+++ b/gdb/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2016-03-31  Pedro Alves  <palves@redhat.com>
+
+	PR gdb/19858
+	* gdb.base/jit.exp (compile_jit_test): Add intro comment.  Add
+	BINSUFFIX parameter, and handle it.
+	(top level): Adjust calls compile_jit_test.
+
 2016-03-31  Catalin Udma  <catalin.udma@freescale.com>
 
 	PR python/19743
diff --git a/gdb/testsuite/gdb.base/jit.exp b/gdb/testsuite/gdb.base/jit.exp
index b51b878..3e12301 100644
--- a/gdb/testsuite/gdb.base/jit.exp
+++ b/gdb/testsuite/gdb.base/jit.exp
@@ -24,18 +24,19 @@ if {[get_compiler_info]} {
     return 1
 }
 
-#
-# test running programs
-#
+# Compile the testcase program and library.  BINSUFFIX is the suffix
+# to append to the program and library filenames, to make them unique
+# between invocations.  OPTIONS is passed to gdb_compile when
+# compiling the program.
 
-proc compile_jit_test {testname options} {
+proc compile_jit_test {testname binsuffix options} {
     global testfile srcfile binfile srcdir subdir
     global solib_testfile solib_srcfile solib_binfile solib_binfile_test_msg
     global solib_binfile_target
 
     set testfile jit-main
     set srcfile ${testfile}.c
-    set binfile [standard_output_file $testfile]
+    set binfile [standard_output_file $testfile$binsuffix]
     if { [gdb_compile "${srcdir}/${subdir}/${srcfile}" "${binfile}" \
 	      executable [concat debug $options]] != "" } {
 	untested $testname
@@ -44,8 +45,8 @@ proc compile_jit_test {testname options} {
 
     set solib_testfile "jit-solib"
     set solib_srcfile "${srcdir}/${subdir}/${solib_testfile}.c"
-    set solib_binfile [standard_output_file ${solib_testfile}.so]
-    set solib_binfile_test_msg "SHLIBDIR/${solib_testfile}.so"
+    set solib_binfile [standard_output_file ${solib_testfile}$binsuffix.so]
+    set solib_binfile_test_msg "SHLIBDIR/${solib_testfile}$binsuffix.so"
 
     # Note: compiling without debug info: the library goes through
     # symbol renaming by munging on its symbol table, and that
@@ -109,7 +110,7 @@ proc one_jit_test {count match_str} {
     }
 }
 
-if {[compile_jit_test jit.exp {}] < 0} {
+if {[compile_jit_test jit.exp "" {}] < 0} {
     return
 }
 one_jit_test 1 "${hex}  jit_function_0000"
@@ -117,7 +118,7 @@ one_jit_test 2 "${hex}  jit_function_0000\[\r\n\]+${hex}  jit_function_0001"
 
 with_test_prefix PIE {
     if {[compile_jit_test "jit.exp PIE tests" \
-	     {additional_flags=-fPIE ldflags=-pie}] < 0} {
+	     "-pie" {additional_flags=-fPIE ldflags=-pie}] < 0} {
 	return
     }