Check for <header> with -I<path> for each path in <paths> if need be. The first sucecssful path is chosen (eg if you say AX_EXT_CHECK_HEADER(foo.h, bar baz qux) and -Ibaz works then -Iqux will not be tested.
Any -I flags that locate a header are added to CFLAGS and CPPFLAGS. AS with AC_CHECK_HEADERS it causes HAVE_<header>_H to be defined as 1.
AX_EXT_HAVE_HEADER(openssl/rsa.h, /usr/local/include /usr/local/ssl/include /usr/local/openssl/include)
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Copyright © 2008 Duncan Simpson firstname.lastname@example.org
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