Add build support for 'gprof' profiling.

This commit is contained in:
murrayn 2018-02-06 20:58:41 -08:00
parent d32528e733
commit cfaac2a60f
3 changed files with 36 additions and 4 deletions

View file

@ -143,9 +143,9 @@ AC_ARG_WITH([qrencode],
AC_ARG_ENABLE([hardening],
[AS_HELP_STRING([--disable-hardening],
[do not attempt to harden the resulting executables (default is to harden)])],
[do not attempt to harden the resulting executables (default is to harden when possible)])],
[use_hardening=$enableval],
[use_hardening=yes])
[use_hardening=auto])
AC_ARG_ENABLE([reduce-exports],
[AS_HELP_STRING([--enable-reduce-exports],
@ -214,6 +214,13 @@ AC_ARG_ENABLE([debug],
[enable_debug=$enableval],
[enable_debug=no])
# Enable gprof profiling
AC_ARG_ENABLE([gprof],
[AS_HELP_STRING([--enable-gprof],
[use gprof profiling compiler flags (default is no)])],
[enable_gprof=$enableval],
[enable_gprof=no])
# Turn warnings into errors
AC_ARG_ENABLE([werror],
[AS_HELP_STRING([--enable-werror],
@ -553,12 +560,30 @@ else
AC_SEARCH_LIBS([clock_gettime],[rt])
fi
if test "x$enable_gprof" = xyes; then
dnl -pg is incompatible with -pie. Since hardening and profiling together doesn't make sense,
dnl we simply make them mutually exclusive here. Additionally, hardened toolchains may force
dnl -pie by default, in which case it needs to be turned off with -no-pie.
if test x$use_hardening = xyes; then
AC_MSG_ERROR(gprof profiling is not compatible with hardening. Reconfigure with --disable-hardening or --disable-gprof)
fi
use_hardening=no
AX_CHECK_COMPILE_FLAG([-pg],[GPROF_CXXFLAGS="-pg"],
[AC_MSG_ERROR(gprof profiling requested but not available)], [[$CXXFLAG_WERROR]])
AX_CHECK_LINK_FLAG([[-no-pie]], [GPROF_LDFLAGS="-no-pie"])
AX_CHECK_LINK_FLAG([[-pg]],[GPROF_LDFLAGS="$GPROF_LDFLAGS -pg"],
[AC_MSG_ERROR(gprof profiling requested but not available)], [[$GPROF_LDFLAGS]])
fi
if test x$TARGET_OS != xwindows; then
# All windows code is PIC, forcing it on just adds useless compile warnings
AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
fi
if test x$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"])
@ -1237,6 +1262,8 @@ AC_SUBST(BITCOIN_TX_NAME)
AC_SUBST(RELDFLAGS)
AC_SUBST(ERROR_CXXFLAGS)
AC_SUBST(GPROF_CXXFLAGS)
AC_SUBST(GPROF_LDFLAGS)
AC_SUBST(HARDENED_CXXFLAGS)
AC_SUBST(HARDENED_CPPFLAGS)
AC_SUBST(HARDENED_LDFLAGS)
@ -1330,6 +1357,7 @@ echo " with bench = $use_bench"
echo " with upnp = $use_upnp"
echo " use asm = $use_asm"
echo " debug enabled = $enable_debug"
echo " gprof enabled = $enable_gprof"
echo " werror = $enable_werror"
echo
echo " target os = $TARGET_OS"

View file

@ -140,6 +140,10 @@ Development tips and tricks
Run configure with the --enable-debug option, then make. Or run configure with
CXXFLAGS="-g -ggdb -O0" or whatever debug flags you need.
**compiling for gprof profiling**
Run configure with the --enable-gprof option, then make.
**debug.log**
If the code is behaving strangely, take a look in the debug.log file in the data directory;

View file

@ -4,8 +4,8 @@
DIST_SUBDIRS = secp256k1 univalue
AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS)
AM_CXXFLAGS = $(HARDENED_CXXFLAGS) $(ERROR_CXXFLAGS)
AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS) $(GPROF_LDFLAGS)
AM_CXXFLAGS = $(HARDENED_CXXFLAGS) $(ERROR_CXXFLAGS) $(GPROF_CXXFLAGS)
AM_CPPFLAGS = $(HARDENED_CPPFLAGS)
EXTRA_LIBRARIES =