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-rw-r--r--configure.ac109
1 files changed, 54 insertions, 55 deletions
diff --git a/configure.ac b/configure.ac
index e0bec0882e..e7d14202a7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -243,27 +243,27 @@ AC_ARG_ENABLE(man,
enable_man=yes)
AM_CONDITIONAL(ENABLE_MAN, test "$enable_man" != no)
-# Enable debug
+dnl Enable debug
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],
[use compiler flags and macros suited for debugging (default is no)])],
[enable_debug=$enableval],
[enable_debug=no])
-# Enable different -fsanitize options
+dnl Enable different -fsanitize options
AC_ARG_WITH([sanitizers],
[AS_HELP_STRING([--with-sanitizers],
[comma separated list of extra sanitizers to build with (default is none enabled)])],
[use_sanitizers=$withval])
-# Enable gprof profiling
+dnl Enable gprof profiling
AC_ARG_ENABLE([gprof],
[AS_HELP_STRING([--enable-gprof],
[use gprof profiling compiler flags (default is no)])],
[enable_gprof=$enableval],
[enable_gprof=no])
-# Turn warnings into errors
+dnl Turn warnings into errors
AC_ARG_ENABLE([werror],
[AS_HELP_STRING([--enable-werror],
[Treat certain compiler warnings as errors (default is no)])],
@@ -274,15 +274,15 @@ AC_LANG_PUSH([C++])
AX_CHECK_COMPILE_FLAG([-Werror],[CXXFLAG_WERROR="-Werror"],[CXXFLAG_WERROR=""])
if test "x$enable_debug" = xyes; then
- # Clear default -g -O2 flags
+ dnl Clear default -g -O2 flags
if test "x$CXXFLAGS_overridden" = xno; then
CXXFLAGS=""
fi
- # Disable all optimizations
+ dnl Disable all optimizations
AX_CHECK_COMPILE_FLAG([-O0], [[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -O0"]],,[[$CXXFLAG_WERROR]])
- # Prefer -g3, fall back to -g if that is unavailable.
+ dnl Prefer -g3, fall back to -g if that is unavailable.
AX_CHECK_COMPILE_FLAG(
[-g3],
[[DEBUG_CXXFLAGS="$DEBUG_CXXFLAGS -g3"]],
@@ -295,19 +295,19 @@ if test "x$enable_debug" = xyes; then
fi
if test x$use_sanitizers != x; then
- # First check if the compiler accepts flags. If an incompatible pair like
- # -fsanitize=address,thread is used here, this check will fail. This will also
- # fail if a bad argument is passed, e.g. -fsanitize=undfeined
+ dnl First check if the compiler accepts flags. If an incompatible pair like
+ dnl -fsanitize=address,thread is used here, this check will fail. This will also
+ dnl fail if a bad argument is passed, e.g. -fsanitize=undfeined
AX_CHECK_COMPILE_FLAG(
[[-fsanitize=$use_sanitizers]],
[[SANITIZER_CXXFLAGS=-fsanitize=$use_sanitizers]],
[AC_MSG_ERROR([compiler did not accept requested flags])])
- # Some compilers (e.g. GCC) require additional libraries like libasan,
- # libtsan, libubsan, etc. Make sure linking still works with the sanitize
- # flag. This is a separate check so we can give a better error message when
- # the sanitize flags are supported by the compiler but the actual sanitizer
- # libs are missing.
+ dnl Some compilers (e.g. GCC) require additional libraries like libasan,
+ dnl libtsan, libubsan, etc. Make sure linking still works with the sanitize
+ dnl flag. This is a separate check so we can give a better error message when
+ dnl the sanitize flags are supported by the compiler but the actual sanitizer
+ dnl libs are missing.
AX_CHECK_LINK_FLAG(
[[-fsanitize=$use_sanitizers]],
[[SANITIZER_LDFLAGS=-fsanitize=$use_sanitizers]],
@@ -344,9 +344,9 @@ if test "x$CXXFLAGS_overridden" = "xno"; then
AX_CHECK_COMPILE_FLAG([-Wredundant-decls],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wredundant-decls"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wunused-variable],[WARN_CXXFLAGS="$WARN_CXXFLAGS -Wunused-variable"],,[[$CXXFLAG_WERROR]])
- ## Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
- ## unknown options if any other warning is produced. Test the -Wfoo case, and
- ## set the -Wno-foo case if it works.
+ dnl Some compilers (gcc) ignore unknown -Wno-* options, but warn about all
+ dnl unknown options if any other warning is produced. Test the -Wfoo case, and
+ dnl set the -Wno-foo case if it works.
AX_CHECK_COMPILE_FLAG([-Wunused-parameter],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-parameter"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wself-assign],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-self-assign"],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-Wunused-local-typedef],[NOWARN_CXXFLAGS="$NOWARN_CXXFLAGS -Wno-unused-local-typedef"],,[[$CXXFLAG_WERROR]])
@@ -361,9 +361,9 @@ enable_shani=no
if test "x$use_asm" = "xyes"; then
-# Check for optional instruction set support. Enabling these does _not_ imply that all code will
-# be compiled with them, rather that specific objects/libs may use them after checking for runtime
-# compatibility.
+dnl Check for optional instruction set support. Enabling these does _not_ imply that all code will
+dnl be compiled with them, rather that specific objects/libs may use them after checking for runtime
+dnl compatibility.
AX_CHECK_COMPILE_FLAG([-msse4.2],[[SSE42_CXXFLAGS="-msse4.2"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-msse4.1],[[SSE41_CXXFLAGS="-msse4.1"]],,[[$CXXFLAG_WERROR]])
AX_CHECK_COMPILE_FLAG([-mavx -mavx2],[[AVX2_CXXFLAGS="-mavx -mavx2"]],,[[$CXXFLAG_WERROR]])
@@ -506,8 +506,8 @@ case $host in
AC_CHECK_LIB([iphlpapi], [main],, AC_MSG_ERROR(libiphlpapi missing))
AC_CHECK_LIB([crypt32], [main],, AC_MSG_ERROR(libcrypt32 missing))
- # -static is interpreted by libtool, where it has a different meaning.
- # In libtool-speak, it's -all-static.
+ dnl -static is interpreted by libtool, where it has a different meaning.
+ dnl In libtool-speak, it's -all-static.
AX_CHECK_LINK_FLAG([[-static]],[LIBTOOL_APP_LDFLAGS="$LIBTOOL_APP_LDFLAGS -all-static"])
AC_PATH_PROG([MAKENSIS], [makensis], none)
@@ -555,8 +555,8 @@ case $host in
dnl It's safe to add these paths even if the functionality is disabled by
dnl the user (--without-wallet or --without-gui for example).
- bdb_prefix=`$BREW --prefix berkeley-db4 2>/dev/null`
- qt5_prefix=`$BREW --prefix qt5 2>/dev/null`
+ bdb_prefix=$($BREW --prefix berkeley-db4 2>/dev/null)
+ qt5_prefix=$($BREW --prefix qt5 2>/dev/null)
if test x$bdb_prefix != x; then
CPPFLAGS="$CPPFLAGS -I$bdb_prefix/include"
LIBS="$LIBS -L$bdb_prefix/lib"
@@ -673,11 +673,11 @@ AC_C_BIGENDIAN
dnl Check for pthread compile/link requirements
AX_PTHREAD
-# The following macro will add the necessary defines to bitcoin-config.h, but
-# they also need to be passed down to any subprojects. Pull the results out of
-# the cache and add them to CPPFLAGS.
+dnl The following macro will add the necessary defines to bitcoin-config.h, but
+dnl they also need to be passed down to any subprojects. Pull the results out of
+dnl the cache and add them to CPPFLAGS.
AC_SYS_LARGEFILE
-# detect POSIX or GNU variant of strerror_r
+dnl detect POSIX or GNU variant of strerror_r
AC_FUNC_STRERROR_R
if test x$ac_cv_sys_file_offset_bits != x &&
@@ -700,12 +700,12 @@ AX_GCC_FUNC_ATTRIBUTE([dllimport])
if test x$use_glibc_compat != xno; then
- #glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
- #in anyway for back-compat.
+ dnl glibc absorbed clock_gettime in 2.17. librt (its previous location) is safe to link
+ dnl in anyway for back-compat.
AC_CHECK_LIB([rt],[clock_gettime],, AC_MSG_ERROR(librt missing))
- #__fdelt_chk's params and return type have changed from long unsigned int to long int.
- # See which one is present here.
+ dnl __fdelt_chk's params and return type have changed from long unsigned int to long int.
+ dnl See which one is present here.
AC_MSG_CHECKING(__fdelt_chk type)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#ifdef _FORTIFY_SOURCE
#undef _FORTIFY_SOURCE
@@ -741,22 +741,22 @@ if test "x$enable_gprof" = xyes; then
fi
if test x$TARGET_OS != xwindows; then
- # All windows code is PIC, forcing it on just adds useless compile warnings
+ dnl All windows code is PIC, forcing it on just adds useless compile warnings
AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
fi
-# All versions of gcc that we commonly use for building are subject to bug
-# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348. To work around that, set
-# -fstack-reuse=none for all gcc builds. (Only gcc understands this flag)
+dnl All versions of gcc that we commonly use for building are subject to bug
+dnl https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90348. To work around that, set
+dnl -fstack-reuse=none for all gcc builds. (Only gcc understands this flag)
AX_CHECK_COMPILE_FLAG([-fstack-reuse=none],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-reuse=none"])
if test x$use_hardening != xno; then
use_hardening=yes
AX_CHECK_COMPILE_FLAG([-Wstack-protector],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -Wstack-protector"])
AX_CHECK_COMPILE_FLAG([-fstack-protector-all],[HARDENED_CXXFLAGS="$HARDENED_CXXFLAGS -fstack-protector-all"])
- # When enable_debug is yes, all optimizations are disabled.
- # However, FORTIFY_SOURCE requires that there is some level of optimization, otherwise it does nothing and just creates a compiler warning.
- # Since FORTIFY_SOURCE is a no-op without optimizations, do not enable it when enable_debug is yes.
+ dnl When enable_debug is yes, all optimizations are disabled.
+ dnl However, FORTIFY_SOURCE requires that there is some level of optimization, otherwise it does nothing and just creates a compiler warning.
+ dnl Since FORTIFY_SOURCE is a no-op without optimizations, do not enable it when enable_debug is yes.
if test x$enable_debug != xyes; then
AX_CHECK_PREPROC_FLAG([-D_FORTIFY_SOURCE=2],[
AX_CHECK_PREPROC_FLAG([-U_FORTIFY_SOURCE],[
@@ -788,8 +788,8 @@ fi
AC_CHECK_HEADERS([endian.h sys/endian.h byteswap.h stdio.h stdlib.h unistd.h strings.h sys/types.h sys/stat.h sys/select.h sys/prctl.h sys/sysctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h])
-# FD_ZERO may be dependent on a declaration of memcpy, e.g. in SmartOS
-# check that it fails to build without memcpy, then that it builds with
+dnl FD_ZERO may be dependent on a declaration of memcpy, e.g. in SmartOS
+dnl check that it fails to build without memcpy, then that it builds with
AC_MSG_CHECKING(FD_ZERO memcpy dependence)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <cstddef>
@@ -827,7 +827,7 @@ AC_CHECK_DECLS([getifaddrs, freeifaddrs],,,
)
AC_CHECK_DECLS([strnlen])
-# Check for daemon(3), unrelated to --with-daemon (although used by it)
+dnl Check for daemon(3), unrelated to --with-daemon (although used by it)
AC_CHECK_DECLS([daemon])
AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
@@ -893,19 +893,19 @@ if test "x$use_thread_local" = xyes || { test "x$use_thread_local" = xauto && te
[
case $host in
*mingw*)
- # mingw32's implementation of thread_local has also been shown to behave
- # erroneously under concurrent usage; see:
- # https://gist.github.com/jamesob/fe9a872051a88b2025b1aa37bfa98605
+ dnl mingw32's implementation of thread_local has also been shown to behave
+ dnl erroneously under concurrent usage; see:
+ dnl https://gist.github.com/jamesob/fe9a872051a88b2025b1aa37bfa98605
AC_MSG_RESULT(no)
;;
*darwin*)
- # TODO enable thread_local on later versions of Darwin where it is
- # supported (per https://stackoverflow.com/a/29929949)
+ dnl TODO enable thread_local on later versions of Darwin where it is
+ dnl supported (per https://stackoverflow.com/a/29929949)
AC_MSG_RESULT(no)
;;
*freebsd*)
- # FreeBSD's implementation of thread_local is also buggy (per
- # https://groups.google.com/d/msg/bsdmailinglist/22ncTZAbDp4/Dii_pII5AwAJ)
+ dnl FreeBSD's implementation of thread_local is also buggy (per
+ dnl https://groups.google.com/d/msg/bsdmailinglist/22ncTZAbDp4/Dii_pII5AwAJ)
AC_MSG_RESULT(no)
;;
*)
@@ -921,7 +921,7 @@ if test "x$use_thread_local" = xyes || { test "x$use_thread_local" = xauto && te
LDFLAGS="$TEMP_LDFLAGS"
fi
-# Check for different ways of gathering OS randomness
+dnl Check for different ways of gathering OS randomness
AC_MSG_CHECKING(for Linux getrandom syscall)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
#include <sys/syscall.h>
@@ -975,7 +975,7 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdint.h>
[ AC_MSG_RESULT(no)]
)
-# Check for reduced exports
+dnl Check for reduced exports
if test x$use_reduce_exports = xyes; then
AX_CHECK_COMPILE_FLAG([-fvisibility=hidden],[RE_CXXFLAGS="-fvisibility=hidden"],
[AC_MSG_ERROR([Cannot set default symbol visibility. Use --disable-reduce-exports.])])
@@ -987,7 +987,7 @@ AC_LINK_IFELSE(
[[ #include <cstdlib> ]],
[[ int nErr = std::system(""); ]]
)],
- [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_STD__SYSTEM, 1, Define to 1 if you have the `std::system' function.)],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_STD__SYSTEM, 1, Define to 1 if std::system is available.)],
[ AC_MSG_RESULT(no) ]
)
@@ -997,11 +997,10 @@ AC_LINK_IFELSE(
[[ ]],
[[ int nErr = ::_wsystem(""); ]]
)],
- [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_WSYSTEM, 1, Define to 1 if you have the `::wsystem' function.)],
+ [ AC_MSG_RESULT(yes); AC_DEFINE(HAVE_WSYSTEM, 1, Define to 1 if ::wsystem is available.)],
[ AC_MSG_RESULT(no) ]
)
-# Define to 1 if std::system or ::wsystem (Windows) is available
AC_DEFINE([HAVE_SYSTEM], [HAVE_STD__SYSTEM || HAVE_WSYSTEM], [std::system or ::wsystem])
LEVELDB_CPPFLAGS=