/*
 * m4 — GNU macro processor.
 *
 * The universal autotools helper: every autoconf-generated configure
 * script and many build systems (gmp's asm, gettext, bison) invoke m4.
 * Standalone build — needs only a C compiler and make.
 *
 * PORTABILITY: built with defaults; no distro-specific flags.
 */
package "m4" {
    const version = "1.4.21"
    const source  = "https://ftp.gnu.org/gnu/m4/m4-${version}.tar.gz"
    sha256 = "38ae59f7a30bf9c108193cc5c25fbb06014f21e230c7ede2eff614f7b7c37ed8"
    license = "GPL-3.0-or-later"

    provides = ["m4"]

    prepare {
        curl -L -O ${source}
        echo "38ae59f7a30bf9c108193cc5c25fbb06014f21e230c7ede2eff614f7b7c37ed8  m4-${version}.tar.gz" | sha256sum -c -
        tar xf m4-${version}.tar.gz --strip-components=1
    }

    build {
        ./configure --prefix=${prefix}
        make -j${jobs}
    }

    // NOTE: no check phase — the bundled gnulib test-suite fails to compile
    // on modern glibc (test-float-h.c: FLT_IS_IEC_60559 / DBL_IS_IEC_60559 /
    // LDBL_IS_IEC_60559 undeclared).  Upstream issue, not a build failure:
    // the m4 binary itself compiles cleanly.

    install {
        make DESTDIR=${destdir} install
    }
}