According to Jeffrey Walton on 2/14/2010 9:12 PM: > In configure.ac, I have the following: > dnl bignums > AC_ARG_ENABLE([bignum-forcing], AS_HELP_STRING([--enable-bignum-forcing], > [Force the usage of the 64 bits bignum ...]), > [force_bignums=$enableval], [force_bignums=no]) You are missing some m4 quoting. That should be: AC_ARG_ENABLE([bignum-forcing], [AS_HELP_STRING([--enable-bignum-forcing], [Force the usage of the 64 bits bignum ...])], [force_bignums=$enableval], [force_bignums=no]) > if test "x$force_bignums" = "xyes"; then > AC_DEFINE([PDF_FORCE_BIGNUMS],[0],[Force the usage of the 64 bits > bignum ...]) > fi Typically, you would AC_DEFINE a macro to 1, not 0, when a feature is being enabled. > After bootstrap/configure, this produces (in config.h): > /* Force the usage of the 64 bits bignum ... */ > /* #undef PDF_FORCE_BIGNUMS */ That is typical behavior for when a feature was not selected. > What I'm looking for (notice the a #define is used, and the define is > commented): > /* Force the usage of the 64 bits bignum ... */ > /* #define PDF_FORCE_BIGNUMS */ There is no way to result in a commented #define in config.h. It is either a commented #undef or an uncommented #define. Maybe we need to take a step back, and ask why you think you need a commented #define to result in config.h? Also, are you sure you are testing the use of './configure --enable-bignum-forcing'? -- Don't work too hard, make some time for fun as well! Eric Blake ebb9@xxxxxxx
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