# Initialization
AC_PREREQ([2.69])
AC_INIT([phosphor-ipmi-ethstats], [1.0], [https://www.github.com/openbmc/phosphor-ipmi-ethstats/issues])
AC_LANG([C++])
AC_CONFIG_HEADERS([config.h])
AM_INIT_AUTOMAKE([subdir-objects -Wall -Wno-portability -Werror foreign dist-xz])
AM_SILENT_RULES([yes])

# Make sure the default CFLAGS of `-O2 -g` don't override CODE_COVERAGE_CFLAGS
# It is important that this comes before AC_PROG_C{C,XX}, as we are attempting
# to stop them from populating default CFLAGS and CXXFLAGS.
AS_IF([test "x$enable_tests" = "xno"], [enable_code_coverage=no])
AS_IF([test "x$enable_code_coverage" != "xno"], [
    AS_IF([test "x${CXXFLAGS+set}" != "xset"], [
        AC_SUBST(CXXFLAGS, [""])
    ])
    AS_IF([test "x${CFLAGS+set}" != "xset"], [
        AC_SUBST(CFLAGS, [""])
    ])
])

# Checks for programs.
AC_PROG_CXX
AM_PROG_AR
AC_PROG_INSTALL
AC_PROG_MAKE_SET

# Checks for typedefs, structures, and compiler characteristics.
AX_CXX_COMPILE_STDCXX_17([noext])
AX_APPEND_COMPILE_FLAGS([-Wall -Werror], [CXXFLAGS])

# Checks for libraries.
PKG_CHECK_MODULES([LIBIPMID], [libipmid])
AC_CHECK_HEADER(experimental/filesystem, ,[AC_MSG_ERROR([Could not find experimental/filesystem...libstdc++fs developement package required])])

# Checks for library functions.
LT_INIT # Required for systemd linking

# Make it possible for users to choose if they want test support
# explicitly or not at all
AC_ARG_ENABLE([tests], AC_HELP_STRING([--disable-tests],
                                      [Build test cases]))

 # Check/set gtest specific functions.
AS_IF([test "x$enable_tests" != "xno"], [
    PKG_CHECK_MODULES([GTEST], [gtest], [], [true])
    PKG_CHECK_MODULES([GMOCK], [gmock], [], [true])
    AX_PTHREAD

    AX_SAVE_FLAGS_WITH_PREFIX(OLD, [CPPFLAGS])
    AX_APPEND_COMPILE_FLAGS([$GTEST_CFLAGS], [CPPFLAGS])
    AC_LANG_PUSH([C++])
    AC_CHECK_HEADERS([gtest/gtest.h], [
        AS_IF([test "x$GTEST_CFLAGS" = "x"], [
            AS_IF([test "x$PTHREAD_CFLAGS" = "x"], [
                AX_APPEND_COMPILE_FLAGS(["-DGTEST_HAS_PTHREAD=0"], [GTEST_CFLAGS])
            ], [
                AX_APPEND_COMPILE_FLAGS(["-DGTEST_HAS_PTHREAD=1"], [GTEST_CFLAGS])
                AX_APPEND_COMPILE_FLAGS([$PTHREAD_CFLAGS], [GTEST_CFLAGS])
            ])
        ])
    ], [
        AS_IF([test "x$enable_tests" = "xyes"], [
            AC_MSG_ERROR([Testing enabled but could not find gtest/gtest.h])
        ])
    ])
    AC_LANG_POP([C++])
    AX_RESTORE_FLAGS_WITH_PREFIX(OLD, [CPPFLAGS])

    AX_SAVE_FLAGS_WITH_PREFIX(OLD, [CPPFLAGS])
    AX_APPEND_COMPILE_FLAGS([$GMOCK_CFLAGS], [CPPFLAGS])
    AC_LANG_PUSH([C++])
    AC_CHECK_HEADERS([gmock/gmock.h], [], [
        AS_IF([test "x$enable_tests" = "xyes"], [
            AC_MSG_ERROR([Testing enabled but could not find gmock/gmock.h])
        ])
    ])
    AC_LANG_POP([C++])
    AX_RESTORE_FLAGS_WITH_PREFIX(OLD, [CPPFLAGS])

    AX_SAVE_FLAGS_WITH_PREFIX(OLD, [LDFLAGS])
    AX_APPEND_COMPILE_FLAGS([$GTEST_LIBS], [LDFLAGS])
    AC_CHECK_LIB([gtest], [main], [
        AS_IF([test "x$GTEST_LIBS" = "x"], [
            AX_APPEND_COMPILE_FLAGS([-lgtest], [GTEST_LIBS])
        ])
    ], [
        AS_IF([test "x$enable_tests" = "xyes"], [
            AC_MSG_ERROR([Testing enabled but couldn't find gtest libs])
        ])
    ])
    AX_RESTORE_FLAGS_WITH_PREFIX(OLD, [LDFLAGS])

    AX_SAVE_FLAGS_WITH_PREFIX(OLD, [LDFLAGS])
    AX_APPEND_COMPILE_FLAGS([$GMOCK_LIBS], [LDFLAGS])
    AC_CHECK_LIB([gmock], [main], [
        AS_IF([test "x$GMOCK_LIBS" = "x"], [
            AX_APPEND_COMPILE_FLAGS([-lgmock], [GMOCK_LIBS])
        ])
    ], [
        AS_IF([test "x$enable_tests" = "xyes"], [
            AC_MSG_ERROR([Testing enabled but couldn't find gmock libs])
        ])
    ])
    AX_RESTORE_FLAGS_WITH_PREFIX(OLD, [LDFLAGS])
])

# Check for valgrind
AS_IF([test "x$enable_tests" = "xno"], [enable_valgrind=no])
m4_foreach([vgtool], [valgrind_tool_list],
    [AX_VALGRIND_DFLT(vgtool, [off])])
AX_VALGRIND_DFLT([memcheck], [on])
AX_VALGRIND_CHECK
AM_EXTRA_RECURSIVE_TARGETS([check-valgrind])
m4_foreach([vgtool], [valgrind_tool_list],
    [AM_EXTRA_RECURSIVE_TARGETS([check-valgrind-]vgtool)])

# Code coverage
AX_CODE_COVERAGE
m4_ifdef([_AX_CODE_COVERAGE_RULES],
    [AM_CONDITIONAL(AUTOCONF_CODE_COVERAGE_2019_01_06, [true])],
    [AM_CONDITIONAL(AUTOCONF_CODE_COVERAGE_2019_01_06, [false])])
AX_ADD_AM_MACRO_STATIC([])

# Do you want to install with the Google OEM Number as well.
AC_ARG_ENABLE([google],
    AS_HELP_STRING(
        [--enable-google], [Enable registering with Google OEN.]
    )
)
AM_CONDITIONAL(ENABLE_GOOGLE, [test "x$enable_google" = "xyes"])
AS_IF([test "x$enable_google" = "xyes"],
    [AC_DEFINE(ENABLE_GOOGLE, [1], [Register with Google OEN.])],
    [AC_DEFINE(ENABLE_GOOGLE, [0], [Do not register with Google OEN.])]
)

# Create configured output
AC_CONFIG_FILES([Makefile test/Makefile])
AC_OUTPUT