libm/Android.bp

//
// libm.so and libm.a for target.
//
package {
    default_applicable_licenses: ["bionic_libm_license"],
}

license {
    name: "bionic_libm_license",
    visibility: [":__subpackages__"],
    license_kinds: [
        "SPDX-license-identifier-Apache-2.0",
        "SPDX-license-identifier-BSD",
        "SPDX-license-identifier-MIT",
        "legacy_unencumbered",
    ],
    license_text: [
        "NOTICE",
    ],
}

cc_library {
    name: "libm",
    defaults: [
        "linux_bionic_supported",
        "bug_24465209_workaround",
    ],
    ramdisk_available: true,
    vendor_ramdisk_available: true,
    recovery_available: true,
    static_ndk_lib: true,

    whole_static_libs: ["libarm-optimized-routines-math"],

    tidy_disabled_srcs: ["upstream-*/**/*.c"],
    srcs: [
        "upstream-freebsd/lib/msun/bsdsrc/b_tgamma.c",
        "upstream-freebsd/lib/msun/src/catrig.c",
        "upstream-freebsd/lib/msun/src/catrigf.c",
        "upstream-freebsd/lib/msun/src/e_acos.c",
        "upstream-freebsd/lib/msun/src/e_acosf.c",
        "upstream-freebsd/lib/msun/src/e_acosh.c",
        "upstream-freebsd/lib/msun/src/e_acoshf.c",
        "upstream-freebsd/lib/msun/src/e_asin.c",
        "upstream-freebsd/lib/msun/src/e_asinf.c",
        "upstream-freebsd/lib/msun/src/e_atan2.c",
        "upstream-freebsd/lib/msun/src/e_atan2f.c",
        "upstream-freebsd/lib/msun/src/e_atanh.c",
        "upstream-freebsd/lib/msun/src/e_atanhf.c",
        "upstream-freebsd/lib/msun/src/e_cosh.c",
        "upstream-freebsd/lib/msun/src/e_coshf.c",
        "upstream-freebsd/lib/msun/src/e_fmod.c",
        "upstream-freebsd/lib/msun/src/e_fmodf.c",
        "upstream-freebsd/lib/msun/src/e_gamma.c",
        "upstream-freebsd/lib/msun/src/e_gammaf.c",
        "upstream-freebsd/lib/msun/src/e_gammaf_r.c",
        "upstream-freebsd/lib/msun/src/e_gamma_r.c",
        "upstream-freebsd/lib/msun/src/e_hypot.c",
        "upstream-freebsd/lib/msun/src/e_hypotf.c",
        "upstream-freebsd/lib/msun/src/e_j0.c",
        "upstream-freebsd/lib/msun/src/e_j0f.c",
        "upstream-freebsd/lib/msun/src/e_j1.c",
        "upstream-freebsd/lib/msun/src/e_j1f.c",
        "upstream-freebsd/lib/msun/src/e_jn.c",
        "upstream-freebsd/lib/msun/src/e_jnf.c",
        "upstream-freebsd/lib/msun/src/e_lgamma.c",
        "upstream-freebsd/lib/msun/src/e_lgammaf.c",
        "upstream-freebsd/lib/msun/src/e_lgammaf_r.c",
        "upstream-freebsd/lib/msun/src/e_lgamma_r.c",
        "upstream-freebsd/lib/msun/src/e_log10.c",
        "upstream-freebsd/lib/msun/src/e_log10f.c",
        "upstream-freebsd/lib/msun/src/e_remainder.c",
        "upstream-freebsd/lib/msun/src/e_remainderf.c",
        "upstream-freebsd/lib/msun/src/e_rem_pio2.c",
        "upstream-freebsd/lib/msun/src/e_rem_pio2f.c",
        "upstream-freebsd/lib/msun/src/e_scalb.c",
        "upstream-freebsd/lib/msun/src/e_scalbf.c",
        "upstream-freebsd/lib/msun/src/e_sinh.c",
        "upstream-freebsd/lib/msun/src/e_sinhf.c",
        "upstream-freebsd/lib/msun/src/k_cos.c",
        "upstream-freebsd/lib/msun/src/k_cosf.c",
        "upstream-freebsd/lib/msun/src/k_exp.c",
        "upstream-freebsd/lib/msun/src/k_expf.c",
        "upstream-freebsd/lib/msun/src/k_rem_pio2.c",
        "upstream-freebsd/lib/msun/src/k_sin.c",
        "upstream-freebsd/lib/msun/src/k_sinf.c",
        "upstream-freebsd/lib/msun/src/k_tan.c",
        "upstream-freebsd/lib/msun/src/k_tanf.c",
        "upstream-freebsd/lib/msun/src/s_asinh.c",
        "upstream-freebsd/lib/msun/src/s_asinhf.c",
        "upstream-freebsd/lib/msun/src/s_atan.c",
        "upstream-freebsd/lib/msun/src/s_atanf.c",
        "upstream-freebsd/lib/msun/src/s_carg.c",
        "upstream-freebsd/lib/msun/src/s_cargf.c",
        "upstream-freebsd/lib/msun/src/s_cargl.c",
        "upstream-freebsd/lib/msun/src/s_cbrt.c",
        "upstream-freebsd/lib/msun/src/s_cbrtf.c",
        "upstream-freebsd/lib/msun/src/s_ccosh.c",
        "upstream-freebsd/lib/msun/src/s_ccoshf.c",
        "upstream-freebsd/lib/msun/src/s_cexp.c",
        "upstream-freebsd/lib/msun/src/s_cexpf.c",
        "upstream-freebsd/lib/msun/src/s_cimag.c",
        "upstream-freebsd/lib/msun/src/s_cimagf.c",
        "upstream-freebsd/lib/msun/src/s_cimagl.c",
        "upstream-freebsd/lib/msun/src/s_clog.c",
        "upstream-freebsd/lib/msun/src/s_clogf.c",
        "upstream-freebsd/lib/msun/src/s_conj.c",
        "upstream-freebsd/lib/msun/src/s_conjf.c",
        "upstream-freebsd/lib/msun/src/s_conjl.c",
        "upstream-freebsd/lib/msun/src/s_cos.c",
        "upstream-freebsd/lib/msun/src/s_cospi.c",
        "upstream-freebsd/lib/msun/src/s_cpow.c",
        "upstream-freebsd/lib/msun/src/s_cpowf.c",
        "upstream-freebsd/lib/msun/src/s_cpowl.c",
        "upstream-freebsd/lib/msun/src/s_cproj.c",
        "upstream-freebsd/lib/msun/src/s_cprojf.c",
        "upstream-freebsd/lib/msun/src/s_cprojl.c",
        "upstream-freebsd/lib/msun/src/s_creal.c",
        "upstream-freebsd/lib/msun/src/s_crealf.c",
        "upstream-freebsd/lib/msun/src/s_creall.c",
        "upstream-freebsd/lib/msun/src/s_csinh.c",
        "upstream-freebsd/lib/msun/src/s_csinhf.c",
        "upstream-freebsd/lib/msun/src/s_csqrt.c",
        "upstream-freebsd/lib/msun/src/s_csqrtf.c",
        "upstream-freebsd/lib/msun/src/s_ctanh.c",
        "upstream-freebsd/lib/msun/src/s_ctanhf.c",
        "upstream-freebsd/lib/msun/src/s_erf.c",
        "upstream-freebsd/lib/msun/src/s_erff.c",
        "upstream-freebsd/lib/msun/src/s_expm1.c",
        "upstream-freebsd/lib/msun/src/s_expm1f.c",
        "upstream-freebsd/lib/msun/src/s_fdim.c",
        "upstream-freebsd/lib/msun/src/s_finite.c",
        "upstream-freebsd/lib/msun/src/s_finitef.c",
        "upstream-freebsd/lib/msun/src/s_fma.c",
        "upstream-freebsd/lib/msun/src/s_fmaf.c",
        "upstream-freebsd/lib/msun/src/s_fmax.c",
        "upstream-freebsd/lib/msun/src/s_fmaxf.c",
        "upstream-freebsd/lib/msun/src/s_fmin.c",
        "upstream-freebsd/lib/msun/src/s_fminf.c",
        "upstream-freebsd/lib/msun/src/s_frexp.c",
        "upstream-freebsd/lib/msun/src/s_frexpf.c",
        "upstream-freebsd/lib/msun/src/s_ilogb.c",
        "upstream-freebsd/lib/msun/src/s_ilogbf.c",
        "upstream-freebsd/lib/msun/src/s_llrint.c",
        "upstream-freebsd/lib/msun/src/s_llrintf.c",
        "upstream-freebsd/lib/msun/src/s_llround.c",
        "upstream-freebsd/lib/msun/src/s_llroundf.c",
        "upstream-freebsd/lib/msun/src/s_log1p.c",
        "upstream-freebsd/lib/msun/src/s_log1pf.c",
        "upstream-freebsd/lib/msun/src/s_logb.c",
        "upstream-freebsd/lib/msun/src/s_logbf.c",
        "upstream-freebsd/lib/msun/src/s_lrint.c",
        "upstream-freebsd/lib/msun/src/s_lrintf.c",
        "upstream-freebsd/lib/msun/src/s_lround.c",
        "upstream-freebsd/lib/msun/src/s_lroundf.c",
        "upstream-freebsd/lib/msun/src/s_modf.c",
        "upstream-freebsd/lib/msun/src/s_modff.c",
        "upstream-freebsd/lib/msun/src/s_nan.c",
        "upstream-freebsd/lib/msun/src/s_nearbyint.c",
        "upstream-freebsd/lib/msun/src/s_nextafter.c",
        "upstream-freebsd/lib/msun/src/s_nextafterf.c",
        "upstream-freebsd/lib/msun/src/s_remquo.c",
        "upstream-freebsd/lib/msun/src/s_remquof.c",
        "upstream-freebsd/lib/msun/src/s_round.c",
        "upstream-freebsd/lib/msun/src/s_roundf.c",
        "upstream-freebsd/lib/msun/src/s_scalbln.c",
        "upstream-freebsd/lib/msun/src/s_scalbn.c",
        "upstream-freebsd/lib/msun/src/s_scalbnf.c",
        "upstream-freebsd/lib/msun/src/s_signgam.c",
        "upstream-freebsd/lib/msun/src/s_significand.c",
        "upstream-freebsd/lib/msun/src/s_significandf.c",
        "upstream-freebsd/lib/msun/src/s_sin.c",
        "upstream-freebsd/lib/msun/src/s_sinpi.c",
        "upstream-freebsd/lib/msun/src/s_sincos.c",
        "upstream-freebsd/lib/msun/src/s_tan.c",
        "upstream-freebsd/lib/msun/src/s_tanf.c",
        "upstream-freebsd/lib/msun/src/s_tanh.c",
        "upstream-freebsd/lib/msun/src/s_tanhf.c",
        "upstream-freebsd/lib/msun/src/s_tgammaf.c",
        "upstream-freebsd/lib/msun/src/w_cabs.c",
        "upstream-freebsd/lib/msun/src/w_cabsf.c",
        "upstream-freebsd/lib/msun/src/w_cabsl.c",
        "upstream-freebsd/lib/msun/src/w_drem.c",
        "upstream-freebsd/lib/msun/src/w_dremf.c",

        // The FreeBSD complex functions appear to be better, but they're incomplete.
        // We take the FreeBSD implementations when they exist, but fill out the rest
        // of <complex.h> from NetBSD...
        "upstream-netbsd/lib/libm/complex/ccoshl.c",
        "upstream-netbsd/lib/libm/complex/ccosl.c",
        "upstream-netbsd/lib/libm/complex/cephes_subrl.c",
        "upstream-netbsd/lib/libm/complex/cexpl.c",
        "upstream-netbsd/lib/libm/complex/csinhl.c",
        "upstream-netbsd/lib/libm/complex/csinl.c",
        "upstream-netbsd/lib/libm/complex/ctanhl.c",
        "upstream-netbsd/lib/libm/complex/ctanl.c",

        // Functionality not in the BSDs.
        "significandl.c",
        "fake_long_double.c",

        // Home-grown stuff.
        "builtins.cpp",
        "signbit.cpp",
    ],

    multilib: {
        lib64: {
            srcs: [
                "upstream-freebsd/lib/msun/src/catrigl.c",
                "upstream-freebsd/lib/msun/src/e_acosl.c",
                "upstream-freebsd/lib/msun/src/e_acoshl.c",
                "upstream-freebsd/lib/msun/src/e_asinl.c",
                "upstream-freebsd/lib/msun/src/e_atan2l.c",
                "upstream-freebsd/lib/msun/src/e_atanhl.c",
                "upstream-freebsd/lib/msun/src/e_fmodl.c",
                "upstream-freebsd/lib/msun/src/e_hypotl.c",
                "upstream-freebsd/lib/msun/src/e_lgammal.c",
                "upstream-freebsd/lib/msun/src/e_remainderl.c",
                "upstream-freebsd/lib/msun/src/e_sqrtl.c",
                "upstream-freebsd/lib/msun/src/s_asinhl.c",
                "upstream-freebsd/lib/msun/src/s_atanl.c",
                "upstream-freebsd/lib/msun/src/s_cbrtl.c",
                "upstream-freebsd/lib/msun/src/s_ceill.c",
                "upstream-freebsd/lib/msun/src/s_clogl.c",
                "upstream-freebsd/lib/msun/src/e_coshl.c",
                "upstream-freebsd/lib/msun/src/s_cosl.c",
                "upstream-freebsd/lib/msun/src/s_csqrtl.c",
                "upstream-freebsd/lib/msun/src/s_floorl.c",
                "upstream-freebsd/lib/msun/src/s_fmal.c",
                "upstream-freebsd/lib/msun/src/s_fmaxl.c",
                "upstream-freebsd/lib/msun/src/s_fminl.c",
                "upstream-freebsd/lib/msun/src/s_modfl.c",
                "upstream-freebsd/lib/msun/src/s_frexpl.c",
                "upstream-freebsd/lib/msun/src/s_ilogbl.c",
                "upstream-freebsd/lib/msun/src/s_llrintl.c",
                "upstream-freebsd/lib/msun/src/s_llroundl.c",
                "upstream-freebsd/lib/msun/src/s_logbl.c",
                "upstream-freebsd/lib/msun/src/s_lrintl.c",
                "upstream-freebsd/lib/msun/src/s_lroundl.c",
                "upstream-freebsd/lib/msun/src/s_nextafterl.c",
                "upstream-freebsd/lib/msun/src/s_nexttoward.c",
                "upstream-freebsd/lib/msun/src/s_nexttowardf.c",
                "upstream-freebsd/lib/msun/src/s_remquol.c",
                "upstream-freebsd/lib/msun/src/s_rintl.c",
                "upstream-freebsd/lib/msun/src/s_roundl.c",
                "upstream-freebsd/lib/msun/src/s_scalbnl.c",
                "upstream-freebsd/lib/msun/src/s_sincosl.c",
                "upstream-freebsd/lib/msun/src/e_sinhl.c",
                "upstream-freebsd/lib/msun/src/s_sinl.c",
                "upstream-freebsd/lib/msun/src/s_tanhl.c",
                "upstream-freebsd/lib/msun/src/s_tanl.c",
                "upstream-freebsd/lib/msun/src/s_truncl.c",

                "upstream-freebsd/lib/msun/ld128/invtrig.c",
                "upstream-freebsd/lib/msun/ld128/e_lgammal_r.c",
                "upstream-freebsd/lib/msun/ld128/e_powl.c",
                "upstream-freebsd/lib/msun/ld128/k_cosl.c",
                "upstream-freebsd/lib/msun/ld128/k_sinl.c",
                "upstream-freebsd/lib/msun/ld128/k_tanl.c",
                "upstream-freebsd/lib/msun/ld128/s_erfl.c",
                "upstream-freebsd/lib/msun/ld128/s_exp2l.c",
                "upstream-freebsd/lib/msun/ld128/s_expl.c",
                "upstream-freebsd/lib/msun/ld128/s_logl.c",
                "upstream-freebsd/lib/msun/ld128/s_nanl.c",
            ],
            local_include_dirs: ["upstream-freebsd/lib/msun/ld128/"],
        },
    },

    arch: {
        arm: {
            srcs: [
                "arm/fenv.c",
            ],
            armv7_a_neon: {
                // armv7 arm32 has no instructions to implement these as
                // builtins, so we build the portable implementations for armv7,
                // because the NDK still supports armv7.
                srcs: [
                    "upstream-freebsd/lib/msun/src/s_ceil.c",
                    "upstream-freebsd/lib/msun/src/s_ceilf.c",
                    "upstream-freebsd/lib/msun/src/s_floor.c",
                    "upstream-freebsd/lib/msun/src/s_floorf.c",
                    "upstream-freebsd/lib/msun/src/s_rint.c",
                    "upstream-freebsd/lib/msun/src/s_rintf.c",
                    "upstream-freebsd/lib/msun/src/s_trunc.c",
                    "upstream-freebsd/lib/msun/src/s_truncf.c",
                ],
            },
            instruction_set: "arm",
            version_script: ":libm.arm.map",
            no_libcrt: true,
            shared: {
                // For backwards-compatibility, some arm32 builtins are exported from libm.so.
                static_libs: ["libclang_rt.builtins-exported"],
            },
            // "#pragma STDC FENV_ACCESS ON" in e_sqrtl.c is not supported for arm32.
            cflags: ["-Wno-ignored-pragmas"],
        },

        arm64: {
            srcs: [
                "arm64/fenv.c",
            ],
            exclude_srcs: [
                "upstream-freebsd/lib/msun/src/s_fma.c",
                "upstream-freebsd/lib/msun/src/s_fmaf.c",
                "upstream-freebsd/lib/msun/src/s_fmax.c",
                "upstream-freebsd/lib/msun/src/s_fmaxf.c",
                "upstream-freebsd/lib/msun/src/s_fmin.c",
                "upstream-freebsd/lib/msun/src/s_fminf.c",
                "upstream-freebsd/lib/msun/src/s_llrint.c",
                "upstream-freebsd/lib/msun/src/s_llrintf.c",
                "upstream-freebsd/lib/msun/src/s_llround.c",
                "upstream-freebsd/lib/msun/src/s_llroundf.c",
                "upstream-freebsd/lib/msun/src/s_lrint.c",
                "upstream-freebsd/lib/msun/src/s_lrintf.c",
                "upstream-freebsd/lib/msun/src/s_lround.c",
                "upstream-freebsd/lib/msun/src/s_lroundf.c",
                "upstream-freebsd/lib/msun/src/s_round.c",
                "upstream-freebsd/lib/msun/src/s_roundf.c",
            ],
            version_script: ":libm.arm64.map",
        },

        riscv64: {
            srcs: [
                "riscv64/fenv.c",
            ],

            exclude_srcs: [
                "upstream-freebsd/lib/msun/src/s_fma.c",
                "upstream-freebsd/lib/msun/src/s_fmaf.c",
                "upstream-freebsd/lib/msun/src/s_fmax.c",
                "upstream-freebsd/lib/msun/src/s_fmaxf.c",
                "upstream-freebsd/lib/msun/src/s_fmin.c",
                "upstream-freebsd/lib/msun/src/s_fminf.c",
                "upstream-freebsd/lib/msun/src/s_llrint.c",
                "upstream-freebsd/lib/msun/src/s_llrintf.c",
                "upstream-freebsd/lib/msun/src/s_llround.c",
                "upstream-freebsd/lib/msun/src/s_llroundf.c",
                "upstream-freebsd/lib/msun/src/s_lrint.c",
                "upstream-freebsd/lib/msun/src/s_lrintf.c",
                "upstream-freebsd/lib/msun/src/s_lround.c",
                "upstream-freebsd/lib/msun/src/s_lroundf.c",
                "upstream-freebsd/lib/msun/src/s_round.c",
                "upstream-freebsd/lib/msun/src/s_roundf.c",
            ],
            version_script: ":libm.riscv64.map",
        },

        x86: {
            srcs: [
                "i387/fenv.c",
                "x86/lrint.S",
                "x86/lrintf.S",
            ],
            exclude_srcs: [
                "upstream-freebsd/lib/msun/src/s_lrint.c",
                "upstream-freebsd/lib/msun/src/s_lrintf.c",
            ],
            local_include_dirs: ["i387"],
            // The x86 ABI doesn't include this, which is needed for the
            // roundss/roundsd instructions that we've used since Android M.
            cflags: ["-msse4.1"],
            version_script: ":libm.x86.map",
        },

        x86_64: {
            srcs: [
                "amd64/fenv.c",
                "x86_64/lrint.S",
                "x86_64/lrintf.S",
            ],
            exclude_srcs: [
                "upstream-freebsd/lib/msun/src/s_llrint.c",
                "upstream-freebsd/lib/msun/src/s_llrintf.c",
                "upstream-freebsd/lib/msun/src/s_lrint.c",
                "upstream-freebsd/lib/msun/src/s_lrintf.c",
            ],
            version_script: ":libm.x86_64.map",
        },
    },

    local_include_dirs: [
        "upstream-freebsd/android/include/",
        "upstream-freebsd/lib/msun/src/",
    ],

    cflags: [
        "-D_BSD_SOURCE",
        "-DFLT_EVAL_METHOD=0",
        "-include freebsd-compat.h",
        "-include fenv-access.h",
        "-fno-builtin",
        "-fno-math-errno",
        "-Wall",
        "-Werror",
        "-Wno-missing-braces",
        "-Wno-parentheses",
        "-Wno-sign-compare",
        "-Wno-static-in-inline",
        "-Wno-unknown-pragmas",
        "-Wno-unused-const-variable",
        "-Wno-unused-variable",
    ],

    ldflags: [
        "-Wl,--Bsymbolic-functions",
    ],

    // b/120614316, non-critical readibility check
    tidy_checks: ["-cert-dcl16-c"],

    include_dirs: ["bionic/libc"],
    target: {
        bionic: {
            system_shared_libs: ["libc"],
        },
    },

    sanitize: {
        address: false,
        fuzzer: false,
        integer_overflow: false,
    },
    stl: "none",
    native_bridge_supported: true,

    stubs: {
        symbol_file: "libm.map.txt",
        versions: [
            "29",
            "current",
        ],
    },

    llndk: {
        symbol_file: "libm.map.txt",
    },

    apex_available: [
        "//apex_available:platform",
        "com.android.runtime",
    ],

    lto: {
        never: true,
    },
}

ndk_library {
    name: "libm",
    symbol_file: "libm.map.txt",
    first_version: "9",
}

genrule {
    name: "libm.arm.map",
    out: ["libm.arm.map.txt"],
    srcs: ["libm.map.txt"],
    tools: ["generate-version-script"],
    cmd: "$(location generate-version-script) arm $(in) $(out)",
}

genrule {
    name: "libm.arm64.map",
    out: ["libm.arm64.map.txt"],
    srcs: ["libm.map.txt"],
    tools: ["generate-version-script"],
    cmd: "$(location generate-version-script) arm64 $(in) $(out)",
}

genrule {
    name: "libm.riscv64.map",
    out: ["libm.riscv64.map.txt"],
    srcs: ["libm.map.txt"],
    tools: ["generate-version-script"],
    cmd: "$(location generate-version-script) riscv64 $(in) $(out)",
}

genrule {
    name: "libm.x86.map",
    out: ["libm.x86.map.txt"],
    srcs: ["libm.map.txt"],
    tools: ["generate-version-script"],
    cmd: "$(location generate-version-script) x86 $(in) $(out)",
}

genrule {
    name: "libm.x86_64.map",
    out: ["libm.x86_64.map.txt"],
    srcs: ["libm.map.txt"],
    tools: ["generate-version-script"],
    cmd: "$(location generate-version-script) x86_64 $(in) $(out)",
}

// Because of a historical accidnt, ldexp() is in libc,
// even though ldexpf() and ldexpl() are in libm.
filegroup {
    name: "libc_ldexp_srcs",
    srcs: ["upstream-freebsd/lib/msun/src/s_scalbn.c"],
}