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build: Use dnl for all comments in configure.ac, rather than #
This commit is contained in:
fanquake
parent
8ddcbb4e41
commit
3ab1824625
1 changed files with 50 additions and 50 deletions
100
configure.ac
100
configure.ac
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@ -243,27 +243,27 @@ AC_ARG_ENABLE(man,
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enable_man=yes)
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AM_CONDITIONAL(ENABLE_MAN, test "$enable_man" != no)
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# Enable debug
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dnl Enable debug
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AC_ARG_ENABLE([debug],
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[AS_HELP_STRING([--enable-debug],
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[use compiler flags and macros suited for debugging (default is no)])],
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[enable_debug=$enableval],
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[enable_debug=no])
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# Enable different -fsanitize options
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dnl Enable different -fsanitize options
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AC_ARG_WITH([sanitizers],
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[AS_HELP_STRING([--with-sanitizers],
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[comma separated list of extra sanitizers to build with (default is none enabled)])],
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[use_sanitizers=$withval])
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# Enable gprof profiling
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dnl Enable gprof profiling
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AC_ARG_ENABLE([gprof],
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[AS_HELP_STRING([--enable-gprof],
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[use gprof profiling compiler flags (default is no)])],
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[enable_gprof=$enableval],
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[enable_gprof=no])
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# Turn warnings into errors
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dnl Turn warnings into errors
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AC_ARG_ENABLE([werror],
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[AS_HELP_STRING([--enable-werror],
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[Treat certain compiler warnings as errors (default is no)])],
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@ -274,15 +274,15 @@ AC_LANG_PUSH([C++])
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AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""])
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if test "x$enable_debug" = xyes; then
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# Clear default -g -O2 flags
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dnl Clear default -g -O2 flags
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if test "x$CXXFLAGS_overridden" = xno; then
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CXXFLAGS=""
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fi
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# Disable all optimizations
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dnl Disable all optimizations
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AX_CHECK_COMPILE_FLAG([-O0], [[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -O0"]],,[[$CXXFLAG_WERROR]])
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# Prefer -g3, fall back to -g if that is unavailable.
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dnl Prefer -g3, fall back to -g if that is unavailable.
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AX_CHECK_COMPILE_FLAG(
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[-g3],
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[[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -g3"]],
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@ -295,19 +295,19 @@ if test "x$enable_debug" = xyes; then
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fi
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if test x$use_sanitizers != x; then
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# First check if the compiler accepts flags. If an incompatible pair like
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# -fsanitize=address,thread is used here, this check will fail. This will also
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# fail if a bad argument is passed, e.g. -fsanitize=undfeined
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dnl First check if the compiler accepts flags. If an incompatible pair like
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dnl -fsanitize=address,thread is used here, this check will fail. This will also
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dnl fail if a bad argument is passed, e.g. -fsanitize=undfeined
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AX_CHECK_COMPILE_FLAG(
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[[-fsanitize=$use_sanitizers]],
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[[SANITIZER_CXXFLAGS=-fsanitize=$use_sanitizers]],
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[AC_MSG_ERROR([compiler did not accept requested flags])])
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# Some compilers (e.g. GCC) require additional libraries like libasan,
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# libtsan, libubsan, etc. Make sure linking still works with the sanitize
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# flag. This is a separate check so we can give a better error message when
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# the sanitize flags are supported by the compiler but the actual sanitizer
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# libs are missing.
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dnl Some compilers (e.g. GCC) require additional libraries like libasan,
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dnl libtsan, libubsan, etc. Make sure linking still works with the sanitize
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dnl flag. This is a separate check so we can give a better error message when
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dnl the sanitize flags are supported by the compiler but the actual sanitizer
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dnl libs are missing.
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AX_CHECK_LINK_FLAG(
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[[-fsanitize=$use_sanitizers]],
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[[SANITIZER_LDFLAGS=-fsanitize=$use_sanitizers]],
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@ -344,9 +344,9 @@ if test "x$CXXFLAGS_overridden" = "xno"; then
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AX_CHECK_COMPILE_FLAG([-Wredundant-decls],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wredundant-decls"],,[[$CXXFLAG_WERROR]])
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AX_CHECK_COMPILE_FLAG([-Wunused-variable],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wunused-variable"],,[[$CXXFLAG_WERROR]])
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## Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
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## unknown options if any other warning is produced. Test the -Wfoo case, and
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## set the -Wno-foo case if it works.
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dnl Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
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dnl unknown options if any other warning is produced. Test the -Wfoo case, and
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dnl set the -Wno-foo case if it works.
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AX_CHECK_COMPILE_FLAG([-Wunused-parameter],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-parameter"],,[[$CXXFLAG_WERROR]])
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AX_CHECK_COMPILE_FLAG([-Wself-assign],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-self-assign"],,[[$CXXFLAG_WERROR]])
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AX_CHECK_COMPILE_FLAG([-Wunused-local-typedef],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-local-typedef"],,[[$CXXFLAG_WERROR]])
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@ -361,9 +361,9 @@ enable_shani=no
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if test "x$use_asm" = "xyes"; then
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# Check for optional instruction set support. Enabling these does _not_ imply that all code will
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# be compiled with them, rather that specific objects/libs may use them after checking for runtime
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# compatibility.
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dnl Check for optional instruction set support. Enabling these does _not_ imply that all code will
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dnl be compiled with them, rather that specific objects/libs may use them after checking for runtime
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dnl compatibility.
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AX_CHECK_COMPILE_FLAG([-msse4.2],[[SSE42_CXXFLAGS="-msse4.2"]],,[[$CXXFLAG_WERROR]])
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AX_CHECK_COMPILE_FLAG([-msse4.1],[[SSE41_CXXFLAGS="-msse4.1"]],,[[$CXXFLAG_WERROR]])
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AX_CHECK_COMPILE_FLAG([-mavx -mavx2],[[AVX2_CXXFLAGS="-mavx -mavx2"]],,[[$CXXFLAG_WERROR]])
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@ -506,8 +506,8 @@ case $host in
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AC_CHECK_LIB([iphlpapi], [main],, AC_MSG_ERROR(libiphlpapi missing))
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AC_CHECK_LIB([crypt32], [main],, AC_MSG_ERROR(libcrypt32 missing))
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# -static is interpreted by libtool, where it has a different meaning.
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# In libtool-speak, it's -all-static.
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dnl -static is interpreted by libtool, where it has a different meaning.
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dnl In libtool-speak, it's -all-static.
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AX_CHECK_LINK_FLAG([[-static]],[LIBTOOL_APP_LDFLAGS="$LIBTOOL_APP_LDFLAGS -all-static"])
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AC_PATH_PROG([MAKENSIS], [makensis], none)
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@ -673,11 +673,11 @@ AC_C_BIGENDIAN
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dnl Check for pthread compile/link requirements
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AX_PTHREAD
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# The following macro will add the necessary defines to bitcoin-config.h, but
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# they also need to be passed down to any subprojects. Pull the results out of
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# the cache and add them to CPPFLAGS.
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dnl The following macro will add the necessary defines to bitcoin-config.h, but
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dnl they also need to be passed down to any subprojects. Pull the results out of
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dnl the cache and add them to CPPFLAGS.
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AC_SYS_LARGEFILE
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# detect POSIX or GNU variant of strerror_r
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dnl detect POSIX or GNU variant of strerror_r
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AC_FUNC_STRERROR_R
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if test x$ac_cv_sys_file_offset_bits != x &&
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@ -700,12 +700,12 @@ AX_GCC_FUNC_ATTRIBUTE([dllimport])
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if test x$use_glibc_compat != xno; then
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#glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
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#in anyway for back-compat.
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dnl glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
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dnl in anyway for back-compat.
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AC_CHECK_LIB([rt],[clock_gettime],, AC_MSG_ERROR(librt missing))
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#__fdelt_chk's params and return type have changed from long unsigned int to long int.
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# See which one is present here.
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dnl __fdelt_chk's params and return type have changed from long unsigned int to long int.
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dnl See which one is present here.
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AC_MSG_CHECKING(__fdelt_chk type)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef _FORTIFY_SOURCE
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#undef _FORTIFY_SOURCE
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@ -741,22 +741,22 @@ if test "x$enable_gprof" = xyes; then
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fi
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if test x$TARGET_OS != xwindows; then
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# All windows code is PIC, forcing it on just adds useless compile warnings
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dnl All windows code is PIC, forcing it on just adds useless compile warnings
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AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
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fi
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# All versions of gcc that we commonly use for building are subject to bug
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# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348. To work around that, set
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# -fstack-reuse=none for all gcc builds. (Only gcc understands this flag)
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dnl All versions of gcc that we commonly use for building are subject to bug
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dnl https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348. To work around that, set
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dnl -fstack-reuse=none for all gcc builds. (Only gcc understands this flag)
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AX_CHECK_COMPILE_FLAG([-fstack-reuse=none],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-reuse=none"])
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if test x$use_hardening != xno; then
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use_hardening=yes
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AX_CHECK_COMPILE_FLAG([-Wstack-protector],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -Wstack-protector"])
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AX_CHECK_COMPILE_FLAG([-fstack-protector-all],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-protector-all"])
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# When enable_debug is yes, all optimizations are disabled.
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# However, FORTIFY_SOURCE requires that there is some level of optimization, otherwise it does nothing and just creates a compiler warning.
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# Since FORTIFY_SOURCE is a no-op without optimizations, do not enable it when enable_debug is yes.
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dnl When enable_debug is yes, all optimizations are disabled.
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dnl However, FORTIFY_SOURCE requires that there is some level of optimization, otherwise it does nothing and just creates a compiler warning.
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dnl Since FORTIFY_SOURCE is a no-op without optimizations, do not enable it when enable_debug is yes.
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if test x$enable_debug != xyes; then
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AX_CHECK_PREPROC_FLAG([-D_FORTIFY_SOURCE=2],[
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AX_CHECK_PREPROC_FLAG([-U_FORTIFY_SOURCE],[
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@ -788,8 +788,8 @@ fi
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AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h sys/sysctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h])
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# FD_ZERO may be dependent on a declaration of memcpy, e.g. in SmartOS
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# check that it fails to build without memcpy, then that it builds with
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dnl FD_ZERO may be dependent on a declaration of memcpy, e.g. in SmartOS
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dnl check that it fails to build without memcpy, then that it builds with
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AC_MSG_CHECKING(FD_ZERO memcpy dependence)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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#include <cstddef>
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@ -827,7 +827,7 @@ AC_CHECK_DECLS([getifaddrs, freeifaddrs],,,
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)
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AC_CHECK_DECLS([strnlen])
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# Check for daemon(3), unrelated to --with-daemon (although used by it)
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dnl Check for daemon(3), unrelated to --with-daemon (although used by it)
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AC_CHECK_DECLS([daemon])
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AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
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@ -893,19 +893,19 @@ if test "x$use_thread_local" = xyes || { test "x$use_thread_local" = xauto && te
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[
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case $host in
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*mingw*)
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# mingw32's implementation of thread_local has also been shown to behave
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# erroneously under concurrent usage; see:
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# https://gist.github.com/jamesob/fe9a872051a88b2025b1aa37bfa98605
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dnl mingw32's implementation of thread_local has also been shown to behave
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dnl erroneously under concurrent usage; see:
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dnl https://gist.github.com/jamesob/fe9a872051a88b2025b1aa37bfa98605
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AC_MSG_RESULT(no)
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;;
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*darwin*)
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# TODO enable thread_local on later versions of Darwin where it is
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# supported (per https://stackoverflow.com/a/29929949)
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dnl TODO enable thread_local on later versions of Darwin where it is
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dnl supported (per https://stackoverflow.com/a/29929949)
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AC_MSG_RESULT(no)
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;;
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*freebsd*)
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# FreeBSD's implementation of thread_local is also buggy (per
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# https://groups.google.com/d/msg/bsdmailinglist/22ncTZAbDp4/Dii_pII5AwAJ)
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dnl FreeBSD's implementation of thread_local is also buggy (per
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dnl https://groups.google.com/d/msg/bsdmailinglist/22ncTZAbDp4/Dii_pII5AwAJ)
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AC_MSG_RESULT(no)
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;;
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*)
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@ -921,7 +921,7 @@ if test "x$use_thread_local" = xyes || { test "x$use_thread_local" = xauto && te
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LDFLAGS="$TEMP_LDFLAGS"
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fi
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# Check for different ways of gathering OS randomness
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dnl Check for different ways of gathering OS randomness
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AC_MSG_CHECKING(for Linux getrandom syscall)
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
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#include <sys/syscall.h>
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@ -975,7 +975,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdint.h>
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[ AC_MSG_RESULT(no)]
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)
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# Check for reduced exports
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dnl Check for reduced exports
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if test x$use_reduce_exports = xyes; then
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AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],[RE_CXXFLAGS="-fvisibility=hidden"],
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[AC_MSG_ERROR([Cannot set default symbol visibility. Use --disable-reduce-exports.])])
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