Merge branch 'feature/float-io'

This commit is contained in:
Angus Gratton 2016-02-24 09:11:12 +11:00
commit f3c4172785
5 changed files with 54 additions and 1 deletions

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@ -48,6 +48,13 @@ ESPTOOL ?= esptool.py
ESPPORT ?= /dev/ttyUSB0
ESPBAUD ?= 115200
# set this to 0 if you don't need floating point support in printf/scanf
# this will save approx 14.5KB flash space and 448 bytes of statically allocated
# data RAM
#
# NB: Setting the value to 0 requires a recent esptool.py (Feb 2016 / commit ebf02c9)
PRINTF_SCANF_FLOAT_SUPPORT ?= 1
# Set OTA to 1 to build an image that supports rBoot OTA bootloader
#
# Currently only works with 16mbit or more flash sizes, with 8mbit
@ -109,7 +116,7 @@ CXXFLAGS ?= $(C_CXX_FLAGS) -fno-exceptions -fno-rtti $(EXTRA_CXXFLAGS)
# these aren't technically preprocesor args, but used by all 3 of C, C++, assembler
CPPFLAGS += -mlongcalls -mtext-section-literals
LDFLAGS = -nostdlib -Wl,--no-check-sections -L$(BUILD_DIR)sdklib -L$(ROOT)lib -u $(ENTRY_SYMBOL) -Wl,-static -Wl,-Map=$(BUILD_DIR)$(PROGRAM).map $(EXTRA_LDFLAGS)
LDFLAGS = -nostdlib -Wl,--no-check-sections -L$(BUILD_DIR)sdklib -L$(ROOT)lib -u $(ENTRY_SYMBOL) -Wl,-static -Wl,-Map=$(BUILD_DIR)$(PROGRAM).map $(EXTRA_LDFLAGS)
ifeq ($(SPLIT_SECTIONS),1)
C_CXX_FLAGS += -ffunction-sections -fdata-sections
@ -202,6 +209,9 @@ INC_DIRS = $(PROGRAM_DIR) $(PROGRAM_DIR)include $(ROOT)include
ifeq ($(OWN_LIBC),1)
INC_DIRS += $(ROOT)libc/xtensa-lx106-elf/include
LDFLAGS += -L$(ROOT)libc/xtensa-lx106-elf/lib
ifeq ($(PRINTF_SCANF_FLOAT_SUPPORT),1)
LDFLAGS += -u _printf_float -u _scanf_float
endif
endif
ifeq ("$(V)","1")

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@ -0,0 +1,43 @@
#ifndef __SYS_CONFIG_H__
#define __SYS_CONFIG_H__
#include <machine/ieeefp.h> /* floating point macros */
#include <sys/features.h> /* POSIX defs */
/*************************************************************************
esp8266-specific xtensa stuff
*************************************************************************/
#ifndef _REENT_SMALL
#define _REENT_SMALL
#endif
/* esp8266 hardware FIFO buffers are 128 bytes */
#define __BUFSIZ__ 128
/*************************************************************************
end of esp8266-specific stuff
*************************************************************************/
#ifndef __EXPORT
#define __EXPORT
#endif
#ifndef __IMPORT
#define __IMPORT
#endif
/* Define return type of read/write routines. In POSIX, the return type
for read()/write() is "ssize_t" but legacy newlib code has been using
"int" for some time. If not specified, "int" is defaulted. */
#ifndef _READ_WRITE_RETURN_TYPE
#define _READ_WRITE_RETURN_TYPE int
#endif
/* Define `count' parameter of read/write routines. In POSIX, the `count'
parameter is "size_t" but legacy newlib code has been using "int" for some
time. If not specified, "int" is defaulted. */
#ifndef _READ_WRITE_BUFSIZE_TYPE
#define _READ_WRITE_BUFSIZE_TYPE int
#endif
#endif /* __SYS_CONFIG_H__ */

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