Add build support for 'gprof' profiling.
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d32528e733
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3 changed files with 36 additions and 4 deletions
32
configure.ac
32
configure.ac
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@ -143,9 +143,9 @@ AC_ARG_WITH([qrencode],
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AC_ARG_ENABLE([hardening],
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[AS_HELP_STRING([--disable-hardening],
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[do not attempt to harden the resulting executables (default is to harden)])],
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[do not attempt to harden the resulting executables (default is to harden when possible)])],
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[use_hardening=$enableval],
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[use_hardening=yes])
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[use_hardening=auto])
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AC_ARG_ENABLE([reduce-exports],
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[AS_HELP_STRING([--enable-reduce-exports],
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@ -214,6 +214,13 @@ AC_ARG_ENABLE([debug],
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[enable_debug=$enableval],
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[enable_debug=no])
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# 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=$enableval],
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[enable_gprof=no])
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# Turn warnings into errors
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AC_ARG_ENABLE([werror],
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[AS_HELP_STRING([--enable-werror],
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@ -553,12 +560,30 @@ else
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AC_SEARCH_LIBS([clock_gettime],[rt])
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fi
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if test "x$enable_gprof" = xyes; then
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dnl -pg is incompatible with -pie. Since hardening and profiling together doesn't make sense,
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dnl we simply make them mutually exclusive here. Additionally, hardened toolchains may force
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dnl -pie by default, in which case it needs to be turned off with -no-pie.
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if test x$use_hardening = xyes; then
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AC_MSG_ERROR(gprof profiling is not compatible with hardening. Reconfigure with --disable-hardening or --disable-gprof)
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fi
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use_hardening=no
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AX_CHECK_COMPILE_FLAG([-pg],[GPROF_CXXFLAGS="-pg"],
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[AC_MSG_ERROR(gprof profiling requested but not available)], [[$CXXFLAG_WERROR]])
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AX_CHECK_LINK_FLAG([[-no-pie]], [GPROF_LDFLAGS="-no-pie"])
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AX_CHECK_LINK_FLAG([[-pg]],[GPROF_LDFLAGS="$GPROF_LDFLAGS -pg"],
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[AC_MSG_ERROR(gprof profiling requested but not available)], [[$GPROF_LDFLAGS]])
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fi
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if test x$TARGET_OS != xwindows; then
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# All windows code is PIC, forcing it on just adds useless compile warnings
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AX_CHECK_COMPILE_FLAG([-fPIC],[PIC_FLAGS="-fPIC"])
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fi
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if test x$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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@ -1237,6 +1262,8 @@ AC_SUBST(BITCOIN_TX_NAME)
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AC_SUBST(RELDFLAGS)
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AC_SUBST(ERROR_CXXFLAGS)
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AC_SUBST(GPROF_CXXFLAGS)
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AC_SUBST(GPROF_LDFLAGS)
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AC_SUBST(HARDENED_CXXFLAGS)
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AC_SUBST(HARDENED_CPPFLAGS)
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AC_SUBST(HARDENED_LDFLAGS)
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@ -1330,6 +1357,7 @@ echo " with bench = $use_bench"
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echo " with upnp = $use_upnp"
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echo " use asm = $use_asm"
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echo " debug enabled = $enable_debug"
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echo " gprof enabled = $enable_gprof"
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echo " werror = $enable_werror"
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echo
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echo " target os = $TARGET_OS"
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@ -140,6 +140,10 @@ Development tips and tricks
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Run configure with the --enable-debug option, then make. Or run configure with
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CXXFLAGS="-g -ggdb -O0" or whatever debug flags you need.
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**compiling for gprof profiling**
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Run configure with the --enable-gprof option, then make.
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**debug.log**
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If the code is behaving strangely, take a look in the debug.log file in the data directory;
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@ -4,8 +4,8 @@
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DIST_SUBDIRS = secp256k1 univalue
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AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS)
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AM_CXXFLAGS = $(HARDENED_CXXFLAGS) $(ERROR_CXXFLAGS)
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AM_LDFLAGS = $(PTHREAD_CFLAGS) $(LIBTOOL_LDFLAGS) $(HARDENED_LDFLAGS) $(GPROF_LDFLAGS)
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AM_CXXFLAGS = $(HARDENED_CXXFLAGS) $(ERROR_CXXFLAGS) $(GPROF_CXXFLAGS)
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AM_CPPFLAGS = $(HARDENED_CPPFLAGS)
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EXTRA_LIBRARIES =
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