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conan install libcurl/7.66.0@ --profile=/Users/jenkins/w/BuildSingleReference@4/1703/6594bb97-e11b-4e27-95d6-55c8127b8e0d/profile.txt --build=libcurl
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Configuration:
[settings]
arch=x86_64
arch_build=x86_64
build_type=Debug
compiler=apple-clang
compiler.libcxx=libc++
compiler.version=12.0
os=Macos
os_build=Macos
[options]
libcurl:shared=True
[build_requires]
[env]

libcurl/7.66.0: Forced build from source
Installing package: libcurl/7.66.0
Requirements
    libcurl/7.66.0 from 'conan-upstream' - Cache
    zlib/1.2.11 from 'conan-center' - Cache
Packages
    libcurl/7.66.0:b531a76d5cbc29cb11decfd020509c0520b3f545 - Build
    zlib/1.2.11:d98fae1010d1fb9e7f79a1e8a72bbf129d8660a2 - Download
Build requirements
    autoconf/2.69 from 'conan-center' - Cache
    automake/1.16.2 from 'conan-center' - Cache
    libtool/2.4.6 from 'conan-center' - Cache
    m4/1.4.18 from 'conan-center' - Cache
    pkgconf/1.7.3 from 'conan-center' - Cache
Build requirements packages
    autoconf/2.69:cc471ed355602ffa7007968c83aa4e7e648a38b5 - Download
    automake/1.16.2:3c28ba69276b46fd46e9c2060ba991d725ccab43 - Download
    libtool/2.4.6:4dd40e50b61a1740b09c673dc22a022de4a237f7 - Missing
    m4/1.4.18:0458ed5e3c5080307ca8a3bae7bab3c04f2768cc - Download
    pkgconf/1.7.3:d98fae1010d1fb9e7f79a1e8a72bbf129d8660a2 - Missing

Installing (downloading, building) binaries...

ERROR: Missing binary: libtool/2.4.6:4dd40e50b61a1740b09c673dc22a022de4a237f7
ERROR: Missing binary: pkgconf/1.7.3:d98fae1010d1fb9e7f79a1e8a72bbf129d8660a2
pkgconf/1.7.3: WARN: Can't find a 'pkgconf/1.7.3' package for the specified settings, options and dependencies:
- Settings: arch=x86_64, build_type=Debug, compiler=apple-clang, compiler.version=12.0, os=Macos
- Options: fPIC=True, shared=False
- Dependencies: 
- Requirements: 
- Package ID: d98fae1010d1fb9e7f79a1e8a72bbf129d8660a2

ERROR: Missing prebuilt package for 'libtool/2.4.6', 'pkgconf/1.7.3'
Try to build from sources with '--build=libtool --build=pkgconf'
Use 'conan search <reference> --table table.html'
Or read 'http://docs.conan.io/en/latest/faq/troubleshooting.html#error-missing-prebuilt-package'