Link blob into C program

GCC_link_blob.txt

# assume, gzipped static html with embedded CSS and JS named html.gz
# note: browser can unzip it when header is correct! save space!

# make binary object from data
arm-none-eabi-ld -r -b binary -o html.o html.gz
# put in read only section
arm-none-eabi-objcopy.exe --rename-section .data=.rodata,alloc,load,readonly,data,contents html.o html.o
# print symbols, just FYI
arm-none-eabi-objdump.exe -t html.o

# C code
/** start symbol of blob */
extern const unsigned char _binary_html_gz_start;
/** end symbol of blob */
extern const unsigned char _binary_html_gz_end;
/** pointer to access blob */
static const uint8_t* blob = (uint8_t*) &_binary_html_gz_start;
/** size of blob */
#define blob_len ((size_t)((uint32_t)&_binary_html_gz_end) \
					- ((uint32_t)&_binary_html_gz_start))