Use .R/Makeconf: see 'R Installation and Administration' section 6.3.3.
On Thu, 20 Nov 2008, Michael Braun wrote:
Hi. I am writing some code in C that I would like to link into R.
My Makevars file is:
PKG_CPPFLAGS=-I/usr/local/include
PKG_LIBS=-L/usr/local/lib -lgsl
PKG_CFLAGS = -Wall -O0 -g -p -pg
The source file is core.c,. and I am compiling using R CMD SHLIB core.c The
output is
gcc -arch x86_64 -O3 -g -p -std=gnu99
-I/Library/Frameworks/R.framework/Resources/include
-I/Library/Frameworks/R.framework/Resources/include/x86_64
-I/usr/local/include -I/usr/local/include -Wall -O0 -g -p -pg -fPIC -g -O2
-c core.c -o core.o
gcc -arch x86_64 -O3 -g -p -std=gnu99 -dynamiclib
-Wl,-headerpad_max_install_names -undefined dynamic_lookup -single_module
-multiply_defined suppress -L/usr/local/lib -o core.so core.o
-L/usr/local/lib -lgsl -F/Library/Frameworks/R.framework/.. -framework R
-Wl,-framework -Wl,CoreFoundation
I am running R 2.7.1 on a Mac Pro (Intel-based) with OS X 10.5.5.
My problem is that, for debugging purposes, I would like to turn off compiler
optimization (so gdb stops telling me that values are temporarily unavailable
due to optimizations). I thought I was doing that by putting the -O0 flag in
PKG_CFLAGS in the Makevars file. But from the output, it looks like there is
still some optimization going on. I would also like to avoid writing a Make
file from scratch, if at all possible.
I looked through the documentation and archives, and was unable to find a
solution to this. Can someone offer some assistance?
Thanks,
Michael
-------------------------------------------
Michael Braun
Homer A. Burnell Career Development Professor, and
Assistant Professor of Management Science (Marketing Group)
MIT Sloan School of Management
One Amherst St., E40-169
Cambridge, MA 02142
[EMAIL PROTECTED]
617-253-3436
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--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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