kbuild: remove unnecessary adjustment for Cygwin

"SFX = .exe" was originally added for Cygwin environment.

It is true that GCC on Cygwin spits executables with .exe extention.

For example,

  gcc -o foo foo.c

will generate "foo.exe", not "foo".

But GNU make is also nicely adjusted for Cygwin.

For example,

  foo: foo.c
          gcc -o $@ $<

will compare the timestamp between "foo.exe" and "foo.c".

You do not have to tweak Makefiles like this:

  foo$(SFX): foo.c
          gcc -o $@ $<

And "make clean" works as well without adjustment for Cygwin because
the command "rm foo" on Cygwin will delete both "foo" and "foo.exe".

In conclusion, makefiles do not need special care for Cygwin.

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

tools/Makefile

@@ -5,15 +5,6 @@
 # SPDX-License-Identifier:	GPL-2.0+
 #
 
-#
-# toolchains targeting win32 generate .exe files
-#
-ifneq (,$(findstring WIN32 ,$(shell $(HOSTCC) -E -dM -xc /dev/null)))
-SFX = .exe
-else
-SFX =
-endif
-
 # Enable all the config-independent tools
 ifneq ($(HOST_TOOLS_ALL),)
 CONFIG_LCD_LOGO = y
@@ -38,31 +29,31 @@ ENVCRC-$(CONFIG_ENV_IS_IN_NVRAM) = y
 ENVCRC-$(CONFIG_ENV_IS_IN_SPI_FLASH) = y
 CONFIG_BUILD_ENVCRC ?= $(ENVCRC-y)
 
-hostprogs-$(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER) += atmel_pmecc_params$(SFX)
+hostprogs-$(CONFIG_SPL_GENERATE_ATMEL_PMECC_HEADER) += atmel_pmecc_params
 
 # TODO: CONFIG_CMD_LICENSE does not work
-hostprogs-$(CONFIG_CMD_LICENSE) += bin2header$(SFX)
-hostprogs-$(CONFIG_LCD_LOGO) += bmp_logo$(SFX)
-hostprogs-$(CONFIG_VIDEO_LOGO) += bmp_logo$(SFX)
-HOSTCFLAGS_bmp_logo$(SFX).o := -pedantic
+hostprogs-$(CONFIG_CMD_LICENSE) += bin2header
+hostprogs-$(CONFIG_LCD_LOGO) += bmp_logo
+hostprogs-$(CONFIG_VIDEO_LOGO) += bmp_logo
+HOSTCFLAGS_bmp_logo.o := -pedantic
 
-hostprogs-$(CONFIG_BUILD_ENVCRC) += envcrc$(SFX)
-envcrc$(SFX)-objs := envcrc.o lib/crc32.o common/env_embedded.o lib/sha1.o
+hostprogs-$(CONFIG_BUILD_ENVCRC) += envcrc
+envcrc-objs := envcrc.o lib/crc32.o common/env_embedded.o lib/sha1.o
 
-hostprogs-$(CONFIG_CMD_NET) += gen_eth_addr$(SFX)
-HOSTCFLAGS_gen_eth_addr$(SFX).o := -pedantic
+hostprogs-$(CONFIG_CMD_NET) += gen_eth_addr
+HOSTCFLAGS_gen_eth_addr.o := -pedantic
 
-hostprogs-$(CONFIG_CMD_LOADS) += img2srec$(SFX)
-HOSTCFLAGS_img2srec$(SFX).o := -pedantic
+hostprogs-$(CONFIG_CMD_LOADS) += img2srec
+HOSTCFLAGS_img2srec.o := -pedantic
 
-hostprogs-$(CONFIG_XWAY_SWAP_BYTES) += xway-swap-bytes$(SFX)
-HOSTCFLAGS_xway-swap-bytes$(SFX).o := -pedantic
+hostprogs-$(CONFIG_XWAY_SWAP_BYTES) += xway-swap-bytes
+HOSTCFLAGS_xway-swap-bytes.o := -pedantic
 
-hostprogs-y += mkenvimage$(SFX)
-mkenvimage$(SFX)-objs := mkenvimage.o os_support.o lib/crc32.o
+hostprogs-y += mkenvimage
+mkenvimage-objs := mkenvimage.o os_support.o lib/crc32.o
 
-hostprogs-y += dumpimage$(SFX) mkimage$(SFX)
-hostprogs-$(CONFIG_FIT_SIGNATURE) += fit_info$(SFX) fit_check_sign$(SFX)
+hostprogs-y += dumpimage mkimage
+hostprogs-$(CONFIG_FIT_SIGNATURE) += fit_info fit_check_sign
 
 FIT_SIG_OBJS-$(CONFIG_FIT_SIGNATURE) := common/image-sig.o
 # Flattened device tree objects
@@ -100,10 +91,10 @@ dumpimage-mkimage-objs := aisimage.o \
 			$(LIBFDT_OBJS) \
 			$(RSA_OBJS-y)
 
-dumpimage$(SFX)-objs := $(dumpimage-mkimage-objs) dumpimage.o
-mkimage$(SFX)-objs   := $(dumpimage-mkimage-objs) mkimage.o
-fit_info$(SFX)-objs   := $(dumpimage-mkimage-objs) fit_info.o
-fit_check_sign$(SFX)-objs   := $(dumpimage-mkimage-objs) fit_check_sign.o
+dumpimage-objs := $(dumpimage-mkimage-objs) dumpimage.o
+mkimage-objs   := $(dumpimage-mkimage-objs) mkimage.o
+fit_info-objs   := $(dumpimage-mkimage-objs) fit_info.o
+fit_check_sign-objs   := $(dumpimage-mkimage-objs) fit_check_sign.o
 
 # TODO(sjg@chromium.org): Is this correct on Mac OS?
 
@@ -121,33 +112,33 @@ endif
 
 # MXSImage needs LibSSL
 ifneq ($(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_FIT_SIGNATURE),)
-HOSTLOADLIBES_mkimage$(SFX) += -lssl -lcrypto
+HOSTLOADLIBES_mkimage += -lssl -lcrypto
 endif
 
-HOSTLOADLIBES_dumpimage$(SFX) := $(HOSTLOADLIBES_mkimage$(SFX))
-HOSTLOADLIBES_fit_info$(SFX) := $(HOSTLOADLIBES_mkimage$(SFX))
-HOSTLOADLIBES_fit_check_sign$(SFX) := $(HOSTLOADLIBES_mkimage$(SFX))
+HOSTLOADLIBES_dumpimage := $(HOSTLOADLIBES_mkimage)
+HOSTLOADLIBES_fit_info := $(HOSTLOADLIBES_mkimage)
+HOSTLOADLIBES_fit_check_sign := $(HOSTLOADLIBES_mkimage)
 
-hostprogs-$(CONFIG_EXYNOS5250) += mkexynosspl$(SFX)
-hostprogs-$(CONFIG_EXYNOS5420) += mkexynosspl$(SFX)
-HOSTCFLAGS_mkexynosspl$(SFX).o := -pedantic
+hostprogs-$(CONFIG_EXYNOS5250) += mkexynosspl
+hostprogs-$(CONFIG_EXYNOS5420) += mkexynosspl
+HOSTCFLAGS_mkexynosspl.o := -pedantic
 
-hostprogs-$(CONFIG_MX23) += mxsboot$(SFX)
-hostprogs-$(CONFIG_MX28) += mxsboot$(SFX)
-HOSTCFLAGS_mxsboot$(SFX).o := -pedantic
+hostprogs-$(CONFIG_MX23) += mxsboot
+hostprogs-$(CONFIG_MX28) += mxsboot
+HOSTCFLAGS_mxsboot.o := -pedantic
 
-hostprogs-$(CONFIG_SUNXI) += mksunxiboot$(SFX)
+hostprogs-$(CONFIG_SUNXI) += mksunxiboot
 
-hostprogs-$(CONFIG_NETCONSOLE) += ncb$(SFX)
-hostprogs-$(CONFIG_SHA1_CHECK_UB_IMG) += ubsha1$(SFX)
+hostprogs-$(CONFIG_NETCONSOLE) += ncb
+hostprogs-$(CONFIG_SHA1_CHECK_UB_IMG) += ubsha1
 
-ubsha1$(SFX)-objs := os_support.o ubsha1.o lib/sha1.o
+ubsha1-objs := os_support.o ubsha1.o lib/sha1.o
 
 HOSTCFLAGS_ubsha1.o := -pedantic
 
-hostprogs-$(CONFIG_KIRKWOOD) += kwboot$(SFX)
-hostprogs-y += proftool$(SFX)
-hostprogs-$(CONFIG_STATIC_RELA) += relocate-rela$(SFX)
+hostprogs-$(CONFIG_KIRKWOOD) += kwboot
+hostprogs-y += proftool
+hostprogs-$(CONFIG_STATIC_RELA) += relocate-rela
 
 # We build some files with extra pedantic flags to try to minimize things
 # that won't build on some weird host compiler -- though there are lots of
@@ -158,8 +149,8 @@ HOSTCFLAGS_sha1.o := -pedantic
 HOSTCFLAGS_sha256.o := -pedantic
 
 # Don't build by default
-#hostprogs-$(CONFIG_PPC) += mpc86x_clk$(SFX)
-#HOSTCFLAGS_mpc86x_clk$(SFX).o := -pedantic
+#hostprogs-$(CONFIG_PPC) += mpc86x_clk
+#HOSTCFLAGS_mpc86x_clk.o := -pedantic
 
 quiet_cmd_wrap = WRAP    $@
 cmd_wrap = echo "\#include <$(srctree)/$(patsubst $(obj)/%,%,$@)>" >$@