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Diffstat (limited to '')
| -rw-r--r-- | configure.ac | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 7a122d71..a75c520b 100644 --- a/configure.ac +++ b/configure.ac @@ -535,6 +535,60 @@ TUKLIB_PHYSMEM TUKLIB_CPUCORES TUKLIB_MBSTR +# Check for system-provided SHA-256. At least the following is supported: +# +# OS Headers Library Type Function +# FreeBSD sys/types.h + sha256.h libmd SHA256_CTX SHA256_Init +# NetBSD sys/types.h + sha2.h SHA256_CTX SHA256_Init +# OpenBSD sys/types.h + sha2.h SHA2_CTX SHA256Init +# Solaris sys/types.h + sha2.h libmd SHA256_CTX SHA256Init +# MINIX 3 sys/types.h + minix/sha2.h libutil SHA256_CTX SHA256_Init +# Darwin CommonCrypto/CommonDigest.h CC_SHA256_CTX CC_SHA256_Init +# +# Note that Darwin's CC_SHA256_Update takes buffer size as uint32_t instead +# of size_t. +# +# We don't check for e.g. OpenSSL or libgcrypt because we don't want +# to introduce dependencies to other packages by default. Maybe such +# libraries could be supported via additional configure options though. +# +if test "x$enable_check_sha256" = "xyes"; then + # Test for Common Crypto before others, because Darwin has sha256.h + # too and we don't want to use that, because on older versions it + # uses OpenSSL functions, whose SHA256_Init is not guaranteed to + # succeed. + sha256_header_found=no + AC_CHECK_HEADERS( + [CommonCrypto/CommonDigest.h sha256.h sha2.h minix/sha2.h], + [sha256_header_found=yes ; break]) + if test "x$sha256_header_found" = xyes; then + AC_CHECK_TYPES([CC_SHA256_CTX, SHA256_CTX, SHA2_CTX], [], [], + [[#ifdef HAVE_SYS_TYPES + # include <sys/types.h> + #endif + #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H + # include <CommonCrypto/CommonDigest.h> + #endif + #ifdef HAVE_SHA256_H + # include <sha256.h> + #endif + #ifdef HAVE_SHA2_H + # include <sha2.h> + #endif + #ifdef HAVE_MINIX_SHA2_H + # include <minix/sha2.h> + #endif]]) + AC_SEARCH_LIBS([SHA256_Init], [md util]) + AC_SEARCH_LIBS([SHA256Init], [md]) + AC_CHECK_FUNCS([CC_SHA256_Init SHA256_Init SHA256Init], + [break]) + fi +fi +AM_CONDITIONAL([COND_INTERNAL_SHA256], + [test "x$ac_cv_func_SHA256_Init" != xyes \ + && test "x$ac_cv_func_SHA256Init" != xyes \ + && test "x$ac_cv_func_CC_SHA256_Init" != xyes]) + ############################################################################### # If using GCC, set some additional AM_CFLAGS: |