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Use correct setting for -mfpu when building for Cortex-M4 targets, and add a setting for using hard or soft floating point. #6

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Jun 19, 2013
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Use correct setting for -mfpu when building for Cortex-M4 targets, and add a setting for using hard or soft floating point. #6

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3 changes: 3 additions & 0 deletions workspace_tools/settings.py
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Original file line number Diff line number Diff line change
Expand Up @@ -71,6 +71,9 @@
GCC_CW_PATH = "C:/Freescale/CW MCU v10.3/Cross_Tools/arm-none-eabi-gcc-4_6_2/bin"
EWL_LIB_PATH = "C:/Freescale/CW MCU v10.3/MCU/ARM_GCC_Support/ewl/lib"

# GCC float ABI
M4_FLOAT_ABI = "softfp"

try:
# Allow to overwrite the default settings without the need to edit the
# settings file stored in the repository
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3 changes: 2 additions & 1 deletion workspace_tools/toolchains.py
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Expand Up @@ -556,7 +556,8 @@ def __init__(self, target, notify, tool_path):
self.cpu.append("-mthumb")

if target.core == "Cortex-M4":
self.cpu.append("-mfpu=vfp")
self.cpu.append("-mfpu=fpv4-sp-d16")
self.cpu.append("-mfloat-abi=%s" % M4_FLOAT_ABI)

# Note: We are using "-O2" instead of "-Os" to avoid this known GCC bug:
# http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46762
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