From: whitequark <whitequark@whitequark.org>
Date: Sun, 26 Jul 2015 09:49:02 +0000 (+0300)
Subject: Add a stub C++ standard library.
X-Git-Tag: 24jan2021_ls180~2186
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7a9975ab5ae44af0c528a5697da75f03c246ea21;p=litex.git

Add a stub C++ standard library.

This is necessary to build libunwind.
---

diff --git a/software/common.mak b/software/common.mak
index 925fafe3..b345bee3 100644
--- a/software/common.mak
+++ b/software/common.mak
@@ -42,7 +42,7 @@ endif
 INCLUDES = -I$(MSCDIR)/software/include/base -I$(MSCDIR)/software/include -I$(MSCDIR)/common
 COMMONFLAGS = -Os $(CPUFLAGS) -Wall -fno-builtin -nostdinc -DMSC_GIT_ID=$(MSC_GIT_ID) $(INCLUDES)
 CFLAGS = $(COMMONFLAGS) -fexceptions -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes
-CXXFLAGS = $(COMMONFLAGS) -fexceptions -fno-rtti -ffreestanding
+CXXFLAGS = $(COMMONFLAGS) -std=c++11 -I$(MSCDIR)/software/include/basec++ -fexceptions -fno-rtti -ffreestanding
 LDFLAGS = -nostdlib -nodefaultlibs -L$(MSCDIR)/software/include
 
 # compile and generate dependencies, based on
diff --git a/software/include/basec++/algorithm b/software/include/basec++/algorithm
new file mode 100644
index 00000000..cb9b6142
--- /dev/null
+++ b/software/include/basec++/algorithm
@@ -0,0 +1,4 @@
+#ifndef __CXX_ALGORITHM
+#define __CXX_ALGORITHM
+
+#endif /* __CXX_ALGORITHM */
diff --git a/software/include/basec++/cstddef b/software/include/basec++/cstddef
new file mode 100644
index 00000000..5291f1b6
--- /dev/null
+++ b/software/include/basec++/cstddef
@@ -0,0 +1,11 @@
+#ifndef __CXX_CSTDDEF
+#define __CXX_CSTDDEF
+
+#include <stddef.h>
+
+namespace std {
+  using ::size_t;
+  using ::ptrdiff_t;
+}
+
+#endif /* __CXX_CSTDDEF */
diff --git a/software/include/basec++/cstdlib b/software/include/basec++/cstdlib
new file mode 100644
index 00000000..6501ea9f
--- /dev/null
+++ b/software/include/basec++/cstdlib
@@ -0,0 +1,6 @@
+#ifndef __CXX_CSTDLIB
+#define __CXX_CSTDLIB
+
+#include <stdlib.h>
+
+#endif /* __CXX_CSTDLIB */
diff --git a/software/include/basec++/memory b/software/include/basec++/memory
new file mode 100644
index 00000000..899bb3d4
--- /dev/null
+++ b/software/include/basec++/memory
@@ -0,0 +1,4 @@
+#ifndef __CXX_MEMORY
+#define __CXX_MEMORY
+
+#endif /* __CXX_MEMORY */
diff --git a/software/include/basec++/new b/software/include/basec++/new
new file mode 100644
index 00000000..aa2f1a8d
--- /dev/null
+++ b/software/include/basec++/new
@@ -0,0 +1,9 @@
+#ifndef __CXX_NEW
+#define __CXX_NEW
+
+#include <cstddef>
+
+inline void* operator new (std::size_t size, void* ptr) noexcept
+  { return ptr; }
+
+#endif /* __CXX_NEW */
diff --git a/software/include/basec++/tuple b/software/include/basec++/tuple
new file mode 100644
index 00000000..c97a8a11
--- /dev/null
+++ b/software/include/basec++/tuple
@@ -0,0 +1,4 @@
+#ifndef __CXX_TUPLE
+#define __CXX_TUPLE
+
+#endif /* __CXX_TUPLE */
diff --git a/software/include/basec++/vector b/software/include/basec++/vector
new file mode 100644
index 00000000..ec284411
--- /dev/null
+++ b/software/include/basec++/vector
@@ -0,0 +1,4 @@
+#ifndef __CXX_VECTOR
+#define __CXX_VECTOR
+
+#endif /* __CXX_VECTOR */