curl-config(1) curl-config manual curl-config(1)
NAME
curl-config - Get information about a libcurl installation
SYNOPSIS
curl-config [options]
DESCRIPTION
curl-config displays information about the curl and libcurl installa-
tion.
OPTIONS
--ca Displays the built-in path to the CA cert bundle this libcurl
uses.
--cc Displays the compiler used to build libcurl.
--cflags
Set of compiler options (CFLAGS) to use when compiling files
that use libcurl. Currently that is only the include path to the
curl include files.
--checkfor [version]
Specify the oldest possible libcurl version string you want, and
this script will return 0 if the current installation is new
enough or it returns 1 and outputs a text saying that the cur-
rent version is not new enough. (Added in 7.15.4)
--configure
Displays the arguments given to configure when building curl.
--feature
Lists what particular main features the installed libcurl was
built with. At the time of writing, this list may include SSL,
KRB4 or IPv6. Do not assume any particular order. The keywords
will be separated by newlines. There may be none, one, or sev-
eral keywords in the list.
--help Displays the available options.
--libs Shows the complete set of libs and other linker options you will
need in order to link your application with libcurl.
--prefix
This is the prefix used when libcurl was installed. Libcurl is
then installed in $prefix/lib and its header files are installed
in $prefix/include and so on. The prefix is set with "configure
--prefix".
--protocols
Lists what particular protocols the installed libcurl was built
to support. At the time of writing, this list may include HTTP,
HTTPS, FTP, FTPS, FILE, TELNET, LDAP, DICT and many more. Do not
assume any particular order. The protocols will be listed using
uppercase and are separated by newlines. There may be none, one,
or several protocols in the list. (Added in 7.13.0)
--ssl-backends
Lists the SSL backends that were enabled when libcurl was built.
It might be no, one or several names. If more than one name,
they will appear comma-separated. (Added in 7.58.0)
--static-libs
Shows the complete set of libs and other linker options you will
need in order to link your application with libcurl statically.
(Added in 7.17.1)
--version
Outputs version information about the installed libcurl.
--vernum
Outputs version information about the installed libcurl, in nu-
merical mode. This outputs the version number, in hexadecimal,
with 8 bits for each part: major, minor, and patch. So that
libcurl 7.7.4 would appear as 070704 and libcurl 12.13.14 would
appear as 0c0d0e... Note that the initial zero might be omitted.
(This option was broken in the 7.15.0 release.)
EXAMPLES
What linker options do I need when I link with libcurl?
$ curl-config --libs
What compiler options do I need when I compile using libcurl functions?
$ curl-config --cflags
How do I know if libcurl was built with SSL support?
$ curl-config --feature | grep SSL
What's the installed libcurl version?
$ curl-config --version
How do I build a single file with a one-line command?
$ `curl-config --cc --cflags` -o example example.c `curl-config --libs`
SEE ALSO
curl(1)
Curl 7.88.1 January 02, 2023 curl-config(1)
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