Hi All, http://www.gnu.org/software/gsl/manual/html_node/GCC-warning-options-for-numerical-programs.html recommends the following: gcc -ansi -pedantic -Werror -Wall -W -Wmissing-prototypes -Wstrict-prototypes -Wconversion -Wshadow -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings -Wnested-externs -fshort-enums -fno-common -Dinline= -g -O2 Is it possible to efficiently tell which of the above options are not included with -Wall -Wextra? Wouldn't -Weverything be easier on folks who really want to know about all errata? Its a helpful Clang switch. Jeff
