Hi autoconf-ers, I'm having a problem configuring a project using -Werror because tests for AC_CHECK_SIZEOF() all die in the following manner (excerpt of config.log): (These tests fail on FreeBSD 4.3 which doesn't have <stdint.h>. The AC_CHECK_HEADERS([stdint.h]) confirms this during configure.) -------->8 snip 8<-------- configure:38997: checking for char configure:39027: ccache gcc-3.4.0 -c -ansi -pedantic-errors -W -Wall -Wundef - Wshadow -Wno-unused-parameter -Wpointer-arith -Wcast-qual -Wcast-align -Wconvers ion -Werror -Wmissing-prototypes -Wstrict-prototypes -Wbad-function-cast -Wnest ed-externs -Wno-unused -Wno-shadow -Wno-cast-qual -Wno-strict-prototypes -Wno- missing-prototypes -g0 -O2 conftest.c >&5 distcc[35090] ERROR: compile on localhost failed conftest.c:200:5: "HAVE_STDINT_H" is not defined distcc[35089] ERROR: compile on maxwell/1 failed configure:39033: $? = 1 configure: failed program was: | /* confdefs.h. */ -------->8 snip 8<-------- // ton of #defines -------->8 snip 8<-------- | #if HAVE_STDINT_H | # include <stdint.h> | #endif -------->8 snip 8<-------- This error only started occurring to me after upgrading to autoconf-2.60, but I don't have 2.59 handy anymore to confirm whether or not this is a regression. (This never used to be a problem.) In any case, correct me if I'm wrong, but to me it seems like the recipe for fixing this would be to rewrite the #include part of conftest.c as: | #ifdef HAVE_STDINT_H | # include <stdint.h> | #endif After all, isn't this the convention used in producing "config.h" and using it for conditional #includes? The temporary workaround is to pass an additional -Wno-undef to CFLAGS/CXXFLAGS, so this isn't the end of the world, just a slight annoyance. I do want to make sure this particular project is "-ansi -pedantic-errors -W -Wall -Werror"-clean, which includes rejecting non-standard types such as 'long long'. Of course, I'm aware that such strict flags may affect the outcome of various configure tests in unexpected ways... I try to be cautious. Thanks in advance. Fang _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
