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Add get_pcre_version() and check_pcre() #3873

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Add get_pcre_version() and check_pcre() #3873

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2 changes: 2 additions & 0 deletions base/client.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -324,6 +324,8 @@ function _start()
fdwatcher_reinit()
# Initialize RNG
Random.librandom_init()
# Check that pcre is the correct version
check_pcre()
# Check that BLAS is correctly built
check_blas()
LinAlg.init()
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17 changes: 17 additions & 0 deletions base/util.jl
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Expand Up @@ -256,6 +256,22 @@ function check_blas()
end
end

# Returns the PCRE version as a string, in an attempt to avoid using PCRE itself
function get_pcre_version()
version_string = bytestring( ccall((:pcre_version, "libpcre"), Ptr{Uint8}, () ))
return version_string[1:search( version_string, " ")[1]-1]
end

function check_pcre()
required_version = "8.31"
linked_version = get_pcre_version()
# Check to see if it's a new enough pcre version, without actually using pcre
if float(linked_version) < float(required_version)
println("ERROR: The linked PCRE is too old! PCRE $required_version or higher is required, currently linked against $linked_version")
quit()
end
end

# system information

function versioninfo(io::IO=STDOUT, verbose::Bool=false)
Expand Down Expand Up @@ -288,6 +304,7 @@ function versioninfo(io::IO=STDOUT, verbose::Bool=false)
println(io, " LAPACK: ",liblapack_name)
println(io, " LIBM: ",libm_name)
if verbose
println(io, " libpcre: libpcre (Version $(get_pcre_version()))")
println(io, "Environment:")
for (k,v) in ENV
if !is(match(r"JULIA|PATH|FLAG|^TERM$|HOME",k), nothing)
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