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| author | Kaz Kylheku <kaz@kylheku.com> | 2012-04-07 22:12:41 -0700 |
|---|---|---|
| committer | Kaz Kylheku <kaz@kylheku.com> | 2012-04-07 22:12:41 -0700 |
| commit | 1171e7042fbcedb95eecda2856275fc2a119b212 (patch) | |
| tree | 17de075e44a417c2f4b1ce05a7b0e964535016b6 /ChangeLog | |
| parent | f5ce48225c096a8fade377c3c6648970fa38a5a3 (diff) | |
| download | txr-1171e7042fbcedb95eecda2856275fc2a119b212.tar.gz txr-1171e7042fbcedb95eecda2856275fc2a119b212.tar.bz2 txr-1171e7042fbcedb95eecda2856275fc2a119b212.zip | |
Fixes to get configure ccname=g++ working on OSX Lion.
* Makefile (conftest.syms): Use -n flag in nm so that the output
is not alphabetically sorted, but numerically. We need this
to get the symbols ordered by increasing offset.
* configure (read_syms): New function. Factors out logic used
in two places for reading the output of nm. On OSX Lion, it looks
like we do not get symbol sizes but offsets only, when compiling
with g++. The symbols are in an S section. When compiling with
gcc, we get a common C section with symbol sizes.
So the hack is to use the deltas between offsets to get the sizes.
The objects had to be re-ordered in decreasing rank so alignment
doesn't create padding that will get counted as the size.
Interleaved dummy objects of type char should also work.
Diffstat (limited to 'ChangeLog')
| -rw-r--r-- | ChangeLog | 18 |
1 files changed, 18 insertions, 0 deletions
@@ -1,5 +1,23 @@ 2012-04-07 Kaz Kylheku <kaz@kylheku.com> + Fixes to get configure ccname=g++ working on OSX Lion. + + * Makefile (conftest.syms): Use -n flag in nm so that the output + is not alphabetically sorted, but numerically. We need this + to get the symbols ordered by increasing offset. + + * configure (read_syms): New function. Factors out logic used + in two places for reading the output of nm. On OSX Lion, it looks + like we do not get symbol sizes but offsets only, when compiling + with g++. The symbols are in an S section. When compiling with + gcc, we get a common C section with symbol sizes. + So the hack is to use the deltas between offsets to get the sizes. + The objects had to be re-ordered in decreasing rank so alignment + doesn't create padding that will get counted as the size. + Interleaved dummy objects of type char should also work. + +2012-04-07 Kaz Kylheku <kaz@kylheku.com> + * configure: Print done and terminate line after checking for clashing symbols. |