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--- arm:toolchain [2020/12/20 08:48] – utedass
+++ arm:toolchain [2022/09/12 00:30] (current) – external edit 127.0.0.1
@@ Line 5: / Line 5: @@
 [[https://gcc.gnu.org/onlinedocs/gcc-9.3.0/gcc/|Online documentation]]
-Good options [[https://gcc.gnu.org/onlinedocs/gcc-9.3.0/gcc/ARM-Options.html#ARM-Options|Arm options]]
+Good options [[https://gcc.gnu.org/onlinedocs/gcc-9.3.0/gcc/Invoking-GCC.html#Invoking-GCC|Command line options]], [[https://gcc.gnu.org/onlinedocs/gcc-9.3.0/gcc/ARM-Options.html#ARM-Options|Arm options]]
   * -march=armv6-m
   * -mtune=cortex-m0plus
@@ Line 12: / Line 12: @@
   * -mthumb
   * -mno-unaligned-access
+  * To find unused functions: ''%%-ffunction-sections -fdata-sections -Wl,--gc-sections,--print-gc-sections%%''
+Passing linker options through gcc with -Wl,\\
+''gcc -Wl,-Tlinkerscript.ld''
+Passing assembler options through gcc with -Wa,\\
+''gcc -Wa,-ag''
+^ Argument ^ Description                                 ^ Example ^
+| ''-c''       | Stop after assembly                         | ''# gcc main.c -c -o main.o ''     |
+| ''-S''       | Stop after compile before assembly          | ''# gcc main.c -S -o main.s ''     |
+| ''-E''       | Stop after preprocessor                     | ''# gcc main.c -E -o main.pp ''     |
+| ''-M''       | Generate file suitable for Make             | ''# gcc main.c -M -o main.mk ''     |
 ====== Binutils ======
 [[https://sourceware.org/binutils/docs-2.34/binutils/index.html|Online documentation]]
-===== ld =====
+===== ld -- Linker =====
 [[https://sourceware.org/binutils/docs-2.34/ld/index.html|Online documentation]]
-===== as =====
+[[https://www.silabs.com/community/mcu/32-bit/knowledge-base.entry.html/2018/12/06/understand_the_gnul-PTm6|Understand the linker script]] -- Human readable guide to linker scripts
+===== as -- Assembler =====
 [[https://sourceware.org/binutils/docs-2.34/as/index.html|Online documentation]]
@@ Line 27: / Line 40: @@
   * -march=armv6-m
   * -mthumb
-===== nm =====
+===== nm -- List symbols =====
 [[https://sourceware.org/binutils/docs-2.34/binutils/nm.html#nm|Online documentation]]
-===== objcopy =====
+===== objcopy -- Copy and/or transform object files =====
 [[https://sourceware.org/binutils/docs-2.34/binutils/objcopy.html#objcopy|Online documentation]]
-===== objdump =====
+===== objdump -- Investigate object files =====
-[[https://sourceware.org/binutils/docs-2.34/binutils/objdump.html#objdump|Onlinen documentation]]
+[[https://sourceware.org/binutils/docs-2.34/binutils/objdump.html#objdump|Online documentation]]