Fix MinGW compilation

On Sun, 14 Dec 2014 07:00:28 +0100, Yao Qi wrote:
The build on mingw host is broken because mingw has no mkdtemp.

../../../git/gdb/compile/compile.c: In function 'get_compile_file_tempdir':
../../../git/gdb/compile/compile.c:194:3: error: implicit declaration of function 'mkdtemp' [-Werror=implicit-function-declaration]
   tempdir_name = mkdtemp (tname);
   ^
../../../git/gdb/compile/compile.c:194:16: error: assignment makes pointer from integer without a cast [-Werror]
   tempdir_name = mkdtemp (tname);
                ^
cc1: all warnings being treated as errors

In the end I have managed to test it by Wine myself:

$ wine build_win32/gdb/gdb.exe -q build_win32/gdb/gdb.exe -ex start -ex 'compile code 1' -ex 'set confirm no' -ex quit
[...]
Temporary breakpoint 1, main (argc=1, argv=0x241418) at ../../gdb/gdb.c:29
29        args.argc = argc;
Could not load libcc1.so: Module not found.

Even if it managed to load libcc1.so (it needs host-dependent name libcc1.dll)
then it would soon end up at least on:

default_infcall_mmap:
  error (_("This target does not support inferior memory allocation by mmap."));

As currently there is only:

linux-tdep.c:
  set_gdbarch_infcall_mmap (gdbarch, linux_infcall_mmap);

While one could debug Linux targets from MS-Windows host I find it somehow
overcomplicated now when we are trying to get it running at least on native
Linux x86*.

The 'compile' project needs a larger port effort to run on MS-Windows.

gdb/ChangeLog
2014-12-17  Jan Kratochvil  <jan.kratochvil@redhat.com>

	Fix MinGW compilation.
	* compile/compile.c (get_compile_file_tempdir): Call error if
	!HAVE_MKDTEMP.
	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac (AC_CHECK_FUNCS): Add mkdtemp.

gdb/testsuite/ChangeLog
2014-12-17  Jan Kratochvil  <jan.kratochvil@redhat.com>

	Fix MinGW compilation.
	* gdb.compile/compile-ops.exp: Update untested message if
	!skip_compile_feature_tests.
	* gdb.compile/compile-setjmp.exp: Likewise.
	* gdb.compile/compile-tls.exp: Likewise.
	* gdb.compile/compile.exp: Likewise.
	* lib/gdb.exp (skip_compile_feature_tests): Check also "Command not
	supported on this host".

4 files changed, 4 insertions, 4 deletions

diff --git a/gdb/testsuite/gdb.compile/compile-ops.exp b/gdb/testsuite/gdb.compile/compile-ops.exp
index c295836..4fc950f 100644
--- a/gdb/testsuite/gdb.compile/compile-ops.exp
+++ b/gdb/testsuite/gdb.compile/compile-ops.exp
@@ -411,7 +411,7 @@ if ![runto func] {
 }
 
 if {[skip_compile_feature_tests]} {
-    untested "could not find libcc1 shared library"
+    untested "compile command not supported (could not find libcc1 shared library?)"
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.compile/compile-setjmp.exp b/gdb/testsuite/gdb.compile/compile-setjmp.exp
index 557c1f0..8f876e2 100644
--- a/gdb/testsuite/gdb.compile/compile-setjmp.exp
+++ b/gdb/testsuite/gdb.compile/compile-setjmp.exp
@@ -24,7 +24,7 @@ if ![runto_main] {
 }
 
 if {[skip_compile_feature_tests]} {
-    untested "could not find libcc1 shared library"
+    untested "compile command not supported (could not find libcc1 shared library?)"
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.compile/compile-tls.exp b/gdb/testsuite/gdb.compile/compile-tls.exp
index e9613f5..d95a351 100644
--- a/gdb/testsuite/gdb.compile/compile-tls.exp
+++ b/gdb/testsuite/gdb.compile/compile-tls.exp
@@ -27,7 +27,7 @@ if ![runto_main] then {
 }
 
 if {[skip_compile_feature_tests]} {
-    untested "could not find libcc1 shared library"
+    untested "compile command not supported (could not find libcc1 shared library?)"
     return -1
 }
 
diff --git a/gdb/testsuite/gdb.compile/compile.exp b/gdb/testsuite/gdb.compile/compile.exp
index d0dd791..040b727 100644
--- a/gdb/testsuite/gdb.compile/compile.exp
+++ b/gdb/testsuite/gdb.compile/compile.exp
@@ -57,7 +57,7 @@ if ![runto_main] {
 }
 
 if {[skip_compile_feature_tests]} {
-    untested "could not find libcc1 shared library"
+    untested "compile command not supported (could not find libcc1 shared library?)"
     return -1
 }