X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ef51bfa744db744dc4b2eff1ba9d6334c807f8e6..bcd80897f3b414973fc34dc2ec57ce4df2e69253:/configure.ac?ds=inline diff --git a/configure.ac b/configure.ac index 210002b2..eb39c617 100644 --- a/configure.ac +++ b/configure.ac @@ -45,11 +45,13 @@ AC_CONFIG_MACRO_DIR([m4]) # releases, we want to be able run make dist without being required to # add a bogus NEWS entry. In that case, the version string # automatically contains a dash, which we also let disable gnits. -AM_INIT_AUTOMAKE([1.11.1 dist-xz silent-rules] +AM_INIT_AUTOMAKE([1.11.1 dist-xz nostdinc + color-tests parallel-tests + silent-rules] m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]], [gnu], [gnits])) AM_SILENT_RULES([yes]) -AC_CONFIG_HEADERS([lib/config.h:lib/config.hin]) +AC_CONFIG_HEADERS([lib/config.h:lib/config.in.h]) # Checks for the compiler. AC_PROG_CC_STDC @@ -58,6 +60,20 @@ AC_PROG_CXX # Gnulib (early checks). gl_EARLY +# Gnulib uses '#pragma GCC diagnostic push' to silence some +# warnings, but older gcc doesn't support this. +AC_CACHE_CHECK([whether pragma GCC diagnostic push works], + [lv_cv_gcc_pragma_push_works], [ + save_CFLAGS=$CFLAGS + CFLAGS='-Wunknown-pragmas -Werror' + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ + #pragma GCC diagnostic push + #pragma GCC diagnostic pop + ]])], + [lv_cv_gcc_pragma_push_works=yes], + [lv_cv_gcc_pragma_push_works=no]) + CFLAGS=$save_CFLAGS]) + AC_ARG_ENABLE([gcc-warnings], [ --enable-gcc-warnings turn on lots of GCC warnings (not recommended)], [case $enable_gcc_warnings in @@ -67,35 +83,66 @@ AC_ARG_ENABLE([gcc-warnings], [enable_gcc_warnings=no]) if test "$enable_gcc_warnings" = yes; then warn_common='-Wall -Wextra -Wno-sign-compare -Wcast-align - -Wcast-qual -Wformat -Wpointer-arith -Wwrite-strings' - warn_c='-Wbad-function-cast -Wmissing-declarations -Wmissing-prototypes - -Wshadow -Wstrict-prototypes' - warn_cxx='-Wnoexcept -Wzero-as-null-pointer-constant' + -Wformat -Wpointer-arith -Wwrite-strings' + warn_c='-Wbad-function-cast -Wshadow -Wstrict-prototypes' + warn_cxx='-Wnoexcept' + AC_LANG_PUSH([C]) + # Clang supports many of GCC's -W options, but only issues warnings + # on the ones it does not recognize. In that case, gl_WARN_ADD + # thinks the option is supported, and unknown options are then added + # to CFLAGS. But then, when -Werror is added in the test suite for + # instance, the warning about the unknown option turns into an + # error. + # + # This should be addressed by gnulib's gl_WARN_ADD, but in the + # meanwhile, turn warnings about unknown options into errors in + # CFLAGS, and restore CFLAGS after the tests. + save_CFLAGS=$CFLAGS + gl_WARN_ADD([-Werror=unknown-warning-option], [CFLAGS]) for i in $warn_common $warn_c; do gl_WARN_ADD([$i], [WARN_CFLAGS]) done gl_WARN_ADD([-Werror], [WERROR_CFLAGS]) + + # Warnings for the test suite, and maybe for bison if GCC is modern + # enough. + gl_WARN_ADD([-Wmissing-declarations], [WARN_CFLAGS_TEST]) + gl_WARN_ADD([-Wmissing-prototypes], [WARN_CFLAGS_TEST]) + test $lv_cv_gcc_pragma_push_works = yes && + AS_VAR_APPEND([WARN_CFLAGS], [" $WARN_CFLAGS_TEST"]) + # Warnings for the test suite only. gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST]) gl_WARN_ADD([-pedantic], [WARN_CFLAGS_TEST]) + CFLAGS=$save_CFLAGS AC_LANG_POP([C]) + AC_LANG_PUSH([C++]) + save_CXXFLAGS=$CXXFLAGS + gl_WARN_ADD([-Werror=unknown-warning-option], [CXXFLAGS]) for i in $warn_common $warn_cxx; do gl_WARN_ADD([$i], [WARN_CXXFLAGS]) done + gl_WARN_ADD([-Wzero-as-null-pointer-constant], [WARN_CXXFLAGS], + [AC_LANG_PROGRAM([], [nullptr])]) gl_WARN_ADD([-Werror], [WERROR_CXXFLAGS]) # Warnings for the test suite only. gl_WARN_ADD([-Wundef], [WARN_CXXFLAGS_TEST]) gl_WARN_ADD([-pedantic], [WARN_CXXFLAGS_TEST]) + # Variants break strict aliasing analysis. + gl_WARN_ADD([-fno-strict-aliasing], [NO_STRICT_ALIAS_CXXFLAGS]) + CXXFLAGS=$save_CXXFLAGS AC_LANG_POP([C++]) fi BISON_TEST_FOR_WORKING_C_COMPILER +BISON_C_COMPILER_POSIXLY_CORRECT BISON_TEST_FOR_WORKING_CXX_COMPILER +BISON_CXX_COMPILER_POSIXLY_CORRECT AC_ARG_ENABLE([yacc], [AC_HELP_STRING([--disable-yacc], @@ -103,8 +150,8 @@ AC_ARG_ENABLE([yacc], , [enable_yacc=yes]) case $enable_yacc in yes) - YACC_SCRIPT=yacc - YACC_LIBRARY=liby.a;; + YACC_SCRIPT=src/yacc + YACC_LIBRARY=lib/liby.a;; *) YACC_SCRIPT= YACC_LIBRARY=;; @@ -113,13 +160,19 @@ AC_SUBST([YACC_SCRIPT]) AC_SUBST([YACC_LIBRARY]) # Checks for programs. +AM_MISSING_PROG([DOT], [dot]) AC_PROG_LEX +$LEX_IS_FLEX || AC_MSG_ERROR([Flex is required]) AC_PROG_YACC AC_PROG_RANLIB AC_PROG_GNU_M4 AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.]) AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4 supports -g, otherwise to "".]) +AC_PATH_PROG([PERL], [perl]) +if test -z "$PERL"; then + AC_MSG_ERROR([perl not found]) +fi AM_MISSING_PROG([HELP2MAN], [help2man]) AC_PATH_PROG([XSLTPROC], [xsltproc]) AC_SUBST([XSLTPROC]) @@ -137,7 +190,6 @@ gl_INIT # Checks for library functions. AC_CHECK_FUNCS_ONCE([setlocale]) AM_WITH_DMALLOC -BISON_PREREQ_SUBPIPE BISON_PREREQ_TIMEVAR # Gettext. @@ -158,24 +210,27 @@ AC_CONFIG_FILES([etc/bench.pl], [chmod +x etc/bench.pl]) # Initialize the test suite. AC_CONFIG_TESTDIR(tests) -AC_CONFIG_FILES([tests/Makefile tests/atlocal]) +AC_CONFIG_FILES([tests/atlocal]) AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison]) AC_CHECK_PROGS([VALGRIND], [valgrind]) +case $VALGRIND:$host_os in + '':*) ;; + *:darwin*) + # See README-hacking. + # VALGRIND+=' --suppressions=$(abs_top_srcdir)/build-aux/darwin11.4.0.valgrind' + VALGRIND=;; + *:*) + AC_SUBST([VALGRIND_PREBISON], ["$VALGRIND -q"]);; +esac + AM_MISSING_PROG([AUTOM4TE], [autom4te]) # Needed by tests/atlocal.in. AC_SUBST([GCC]) -gt_JAVACOMP([1.3]) +gt_JAVACOMP([1.3], [1.4]) gt_JAVAEXEC AC_CONFIG_FILES([Makefile - build-aux/Makefile - po/Makefile.in - data/Makefile - etc/Makefile - examples/Makefile - examples/calc++/Makefile - lib/Makefile src/Makefile - doc/Makefile - doc/yacc.1]) + po/Makefile.in + doc/yacc.1]) AC_OUTPUT