diff options
Diffstat (limited to 'cmake/dependencies/sysrandom.cmake')
| -rw-r--r-- | cmake/dependencies/sysrandom.cmake | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/cmake/dependencies/sysrandom.cmake b/cmake/dependencies/sysrandom.cmake new file mode 100644 index 00000000..972db801 --- /dev/null +++ b/cmake/dependencies/sysrandom.cmake @@ -0,0 +1,21 @@ +if (APPLE OR CMAKE_SYSTEM_NAME STREQUAL "FreeBSD") + set(SYS_RND_HDR "") +else () + find_path(SYS_RND_HDR sys/random.h PATH /usr/include/ /usr/local/include/) + if (SYS_RND_HDR) + message(STATUS "Found sys/random.h in ${SYS_RND_HDR}") + set(HAVE_SYS_RANDOM TRUE) + else () + set(SYS_RND_HDR "") + unset(HAVE_SYS_RANDOM) + endif () +endif() + +# Validate that at least one secure random generator is available +if (NOT ((CMAKE_SYSTEM_NAME STREQUAL "FreeBSD") OR APPLE OR + HAVE_SYS_RANDOM OR HAVE_OPENSSL_RNG OR HAVE_LIBGCRYPT)) + message(FATAL_ERROR "No secure random generator found, " + "please install libgcrypt (> 1.7.0) or OpenSSL") +endif () + +mark_as_advanced(SYS_RND_HDR) |