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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-12-21 15:12:13 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2009-12-21 15:12:13 +0000 |
commit | f1e8acbd068e58c217f87e08f0158f59670a67ff (patch) | |
tree | 34dfe45723998e126cc1e4dd256a04bce0bdd4a1 /nuttx/configs/demo9s12ne64 | |
parent | 68bcccf8eb5b13571a475c4047d4d27006ea408e (diff) | |
download | px4-nuttx-f1e8acbd068e58c217f87e08f0158f59670a67ff.tar.gz px4-nuttx-f1e8acbd068e58c217f87e08f0158f59670a67ff.tar.bz2 px4-nuttx-f1e8acbd068e58c217f87e08f0158f59670a67ff.zip |
For fixes for stdint/stdbool build
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2402 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/demo9s12ne64')
-rwxr-xr-x | nuttx/configs/demo9s12ne64/README.txt | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/nuttx/configs/demo9s12ne64/README.txt b/nuttx/configs/demo9s12ne64/README.txt index 72b2c581d..cf35bc6d3 100755 --- a/nuttx/configs/demo9s12ne64/README.txt +++ b/nuttx/configs/demo9s12ne64/README.txt @@ -212,7 +212,7 @@ Soft Registers There are several ways that this error could be fixed: - 1. Increase the number of soft regiaters (i.e., "fake" registers defined + 1. Increase the number of soft registers (i.e., "fake" registers defined at fixed memory locations). This can be done by adding something like -msoft-reg-count=4 to the CFLAGS. This approach was not taken because: @@ -221,7 +221,8 @@ Soft Registers - All of these soft registers wouil have to be saved and restored on every interrupt and context switch. - 2. Lowering the optimization level. Also not desireable becauase 99% of the + 2. Lowering the optimization level by dropping -Os to -O2 or, more likely, + by removing -fomit-frame-pointer. Also not desireable becauase 99% of the files that do not have this problem also increase in size. Special case compilation with reduced optimization levels just for the files that need it could be done, but this would complicate the make system. @@ -233,6 +234,10 @@ Soft Registers the problem is not really eliminated -- it can and will re-occur when files are changed or new files are added. + 4. Many files are built that are needed by DEM09S12NE64. Another very simple + option if those problem files are needed is to just remove the offending + files from the Make.defs file so that they no longer cause a problem. + HCS12/DEMO9S12NEC64-specific Configuration Options ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |