kernel: add mingw

Add the option to build a cross-compiler for kernel type 'mingw'.
The resulting cross-compiler can be used to build applications on a Linux host
that can be run on a Windows target.

Compiler is build using the mingwrt and w32-api packages aviable from the
MinGW project (http://sourceforge.net/projects/mingw).

The windows headers (w32-api package) are extracting with the kernel_headers
step The libraries and other headers from both packages are build and
installed in the various steps of libc

Signed-off-by: Bart vdr Meulen <bartvdrmeulen@gmail.com>
[yann.morin.1998@anciens.enib.fr: fix kernel headers comment, don't "return 0"]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

10 files changed, 194 insertions, 4 deletions

diff --git a/config/kernel.in b/config/kernel.in
index 630eae6..446bd6b 100644
--- a/config/kernel.in
+++ b/config/kernel.in
@@ -8,6 +8,10 @@ config BARE_METAL
     bool
     default n
 
+config MINGW32
+    bool
+    default n
+
 # Each target OS (aka kernel) that support shared libraries can select
 # this, so the user can decide whether or not to build a shared library
 # enabled toolchain
diff --git a/config/kernel/mingw32.in b/config/kernel/mingw32.in
new file mode 100644
index 0000000..1496d05
--- /dev/null
+++ b/config/kernel/mingw32.in
@@ -0,0 +1,32 @@
+# mingw32 config options
+
+config KERNEL_mingw32
+    select MINGW32
+    help
+      Build a toolchain targeting systems running Windows as host
+
+choice
+    bool
+    prompt "Windows api version"
+
+# Don't remove next line
+# CT_INSERT_VERSION_BELOW
+config W32API_V_3_14
+    bool
+    prompt "3.14"
+
+config W32API_V_select
+    bool
+    prompt "Other version"
+
+endchoice
+
+config W32API_VERSION
+    string
+    prompt "W32 api version" if W32API_V_select
+# Don't remove next line
+# CT_INSERT_VERSION_STRING_BELOW
+    default "3.14" if W32API_V_3_14
+    help
+      Enter the version number of the windows api files to use
+
diff --git a/config/libc.in b/config/libc.in
index 58bc320..2ee46ba 100644
--- a/config/libc.in
+++ b/config/libc.in
@@ -35,10 +35,16 @@ config LIBC_SUPPORT_LINUXTHREADS
     default n
     select LIBC_SUPPORT_THREADS_ANY
 
+config LIBC_SUPPORT_WIN32THREADS
+    bool
+    default n
+    select LIBC_SUPPORT_THREADS_ANY
+
 config THREADS
     string
     default "nptl"          if THREADS_NPTL
     default "linuxthreads"  if THREADS_LINUXTHREADS
+    default "win32"         if THREADS_WIN32THREADS
     default "none"          if THREADS_NONE || LIBC_none
 #                              No C library, no threads!
 
@@ -51,6 +57,7 @@ choice
     prompt "Threading implementation to use:"
     default THREADS_NPTL           if LIBC_SUPPORT_NPTL
     default THREADS_LINUXTHREADS   if LIBC_SUPPORT_LINUXTHREADS && ! LIBC_SUPPORT_NPTL
+    default THREADS_WIN32          if LIBC_SUPPORT_WIN32THREADS
     default THREADS_NONE           if ! LIBC_SUPPORT_THREADS_ANY
 
 config THREADS_NPTL
@@ -63,6 +70,11 @@ config THREADS_LINUXTHREADS
     prompt "linuxthreads"
     depends on LIBC_SUPPORT_LINUXTHREADS
 
+config THREADS_WIN32THREADS
+    bool
+    prompt "win32"
+    depends on LIBC_SUPPORT_WIN32THREADS
+
 config THREADS_NONE
     bool
     prompt "none"
diff --git a/config/libc/eglibc.in b/config/libc/eglibc.in
index 0dc6848..b13571b 100644
--- a/config/libc/eglibc.in
+++ b/config/libc/eglibc.in
@@ -1,5 +1,5 @@
 # eglibc options
-# depends on ! BARE_METAL && ARCH_USE_MMU
+# depends on ! MINGW32 && ! BARE_METAL && ARCH_USE_MMU
 
 config LIBC_eglibc
     select LIBC_SUPPORT_NPTL
diff --git a/config/libc/glibc.in b/config/libc/glibc.in
index b2fc88c..3c904bc 100644
--- a/config/libc/glibc.in
+++ b/config/libc/glibc.in
@@ -1,5 +1,5 @@
 # glibc options
-# depends on ! BARE_METAL && ARCH_USE_MMU
+# depends on ! MINGW32 && ! BARE_METAL && ARCH_USE_MMU
 
 config LIBC_glibc
     select LIBC_SUPPORT_NPTL
diff --git a/config/libc/mingw.in b/config/libc/mingw.in
new file mode 100644
index 0000000..2c7bb0f
--- /dev/null
+++ b/config/libc/mingw.in
@@ -0,0 +1,34 @@
+# mingw options
+# depends on MINGW32
+
+config LIBC_mingw
+    bool
+    select LIBC_SUPPORT_WIN32THREADS
+    help
+      The de-facto standard for Mingw distributions.
+
+choice
+    bool
+    prompt "Mingw runtime version"
+
+# Don't remove next line
+# CT_INSERT_VERSION_BELOW
+config MINGWRT_V_3_18
+    bool
+    prompt "3.18"
+
+config MINGWRT_V_select
+    bool
+    prompt "Other version"
+
+endchoice
+
+config MINGWRT_VERSION
+    string
+    prompt "Mingw runtime version" if MINGWRT_V_select
+# Don't remove next line
+# CT_INSERT_VERSION_STRING_BELOW
+    default "3.18" if MINGWRT_V_3_18
+    help
+      Enter the version number of the mingw runtime files to use
+
diff --git a/config/libc/uClibc.in b/config/libc/uClibc.in
index b63239d..aba8674 100644
--- a/config/libc/uClibc.in
+++ b/config/libc/uClibc.in
@@ -1,5 +1,5 @@
 # uClibc options
-# depends on ! BARE_METAL
+# depends on ! MINGW32 && ! BARE_METAL
 
 config LIBC_uClibc
     select LIBC_SUPPORT_LINUXTHREADS
diff --git a/scripts/build/cc/gcc.sh b/scripts/build/cc/gcc.sh
index c4373c1..3fb6ca0 100644
--- a/scripts/build/cc/gcc.sh
+++ b/scripts/build/cc/gcc.sh
@@ -68,6 +68,8 @@ do_cc_core_pass_2() {
         ,,nptl)
             do_cc_core mode=shared build_libgcc=yes
             ;;
+        ,,win32) do_cc_core mode=static build_libgcc=yes
+            ;;
         *)  if [ "${CT_CC_GCC_4_3_or_later}" = "y" ]; then
                 do_cc_core mode=static build_libgcc=yes
             else
@@ -361,7 +363,12 @@ do_cc() {
             extra_config+=("--disable-libgomp")
         fi
     else
-        extra_config+=("--enable-threads=posix")
+        if [ "${CT_THREADS}" = "win32" ]; then
+            extra_config+=("--enable-threads=win32")
+            extra_config+=("--disable-win32-registry")
+        else
+            extra_config+=("--enable-threads=posix")
+        fi
     fi
 
     if [ "${CT_CC_GCC_ENABLE_TARGET_OPTSPACE}" = "y" ]; then
diff --git a/scripts/build/kernel/mingw32.sh b/scripts/build/kernel/mingw32.sh
new file mode 100644
index 0000000..d10442b
--- /dev/null
+++ b/scripts/build/kernel/mingw32.sh
@@ -0,0 +1,27 @@
+# This file declares functions to install the kernel headers for mingw
+# Copyright 2009 Bart vdr. Meulen
+# Licensed under the GPL v2. See COPYING in the root of this package
+
+CT_DoKernelTupleValues() {
+    CT_TARGET_KERNEL="mingw32"
+    CT_TARGET_SYS=
+}
+
+do_kernel_get() {
+    CT_GetFile "w32api-${CT_W32API_VERSION}-mingw32-src" \
+        http://downloads.sourceforge.net/sourceforge/mingw
+}
+
+do_kernel_extract() {
+    CT_Extract "w32api-${CT_W32API_VERSION}-mingw32-src"
+}
+
+do_kernel_headers() {
+    CT_DoStep INFO "Installing kernel headers"
+
+    mkdir -p "${CT_SYSROOT_DIR}/include"
+    cp -r ${CT_SRC_DIR}/w32api-${CT_W32API_VERSION}-mingw32/include \
+          ${CT_SYSROOT_DIR}
+
+    CT_EndStep
+}
diff --git a/scripts/build/libc/mingw.sh b/scripts/build/libc/mingw.sh
new file mode 100644
index 0000000..28d74d6
--- /dev/null
+++ b/scripts/build/libc/mingw.sh
@@ -0,0 +1,74 @@
+do_libc_get() {
+    CT_GetFile "mingwrt-${CT_MINGWRT_VERSION}-mingw32-src" \
+        http://downloads.sourceforge.net/sourceforge/mingw
+}
+
+do_libc_extract() {
+    CT_Extract "mingwrt-${CT_MINGWRT_VERSION}-mingw32-src"
+}
+
+do_libc_check_config() {
+    :
+}
+
+do_libc_headers() {
+    CT_DoStep INFO "Installing C library headers"
+
+    CT_DoLog EXTRA "Installing MinGW Runtime headers"
+    mkdir -p "${CT_SYSROOT_DIR}/include"
+    cp -r ${CT_SRC_DIR}/mingwrt-${CT_MINGWRT_VERSION}-mingw32/include \
+          ${CT_SYSROOT_DIR}
+
+    CT_EndStep
+}
+
+do_libc_start_files() {
+    :
+}
+
+do_libc() {
+    CT_DoStep INFO "Building MinGW files"
+
+    CT_DoLog EXTRA "Configuring W32-API"
+
+    mkdir -p "${CT_BUILD_DIR}/build-w32api"
+    cd "${CT_BUILD_DIR}/build-w32api"
+
+    CFLAGS="-I${CT_SYSROOT_DIR}/include"                          \
+    LDFLAGS="-L${CT_SYSROOT_DIR}/lib"                             \
+    CT_DoExecLog ALL                                              \
+    "${CT_SRC_DIR}/w32api-${CT_W32API_VERSION}-mingw32/configure" \
+        --prefix=${CT_SYSROOT_DIR}                                \
+        --host=${CT_TARGET}
+
+    CT_DoLog EXTRA "Building W32-API"
+    CT_DoExecLog ALL make ${PARALLELMFLAGS}
+
+    CT_DoLog EXTRA "Installing W32-API"
+    CT_DoExecLog ALL make install
+
+    CT_DoLog EXTRA "Configuring MinGW Runtime"
+
+    mkdir -p "${CT_BUILD_DIR}/build-mingwrt"
+    cd "${CT_BUILD_DIR}/build-mingwrt"
+
+    CFLAGS="-I${CT_SYSROOT_DIR}/include"                            \
+    LDFLAGS="-L${CT_SYSROOT_DIR}/lib"                               \
+    CT_DoExecLog ALL                                                \
+    "${CT_SRC_DIR}/mingwrt-${CT_MINGWRT_VERSION}-mingw32/configure" \
+        --prefix=${CT_SYSROOT_DIR}/                                 \
+        --host=${CT_TARGET}
+
+    CT_DoLog EXTRA "Building MinGW Runtime"
+    CT_DoExecLog ALL make ${PARALLELMFLAGS}
+
+    CT_DoLog EXTRA "Installing MinGW Runtime"
+    CT_DoExecLog ALL make install
+
+    CT_EndStep
+}
+
+do_libc_finish() {
+ :
+}
+