X-Git-Url: https://arthur.barton.de/gitweb/?a=blobdiff_plain;f=configure.ac;h=db6c25936c20b76cb7a84942d91557b5c433cddd;hb=518fb596709b39a374820471cb146f481f0b8340;hp=5b187ca9d4afae70199bc267b1338e16bb4e9a3e;hpb=7df42cf10441b5f1340acc6f184eeed38ea33dca;p=netdata.git

diff --git a/configure.ac b/configure.ac
index 5b187ca9..db6c2593 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,11 +51,11 @@ AC_ARG_ENABLE(
     [plugin-nfacct],
     [AS_HELP_STRING([--enable-plugin-nfacct], [enable nfacct plugin, requires root])],
     ,
-    [enable_plugin_nfacct="no"]
+    [enable_plugin_nfacct="detect"]
 )
 AC_ARG_ENABLE(
     [plugin-freeipmi],
-    [AS_HELP_STRING([--enable-plugin-freeipmi], [freeipmi plugin, requires root])],
+    [AS_HELP_STRING([--enable-plugin-freeipmi], [enable freeipmi plugin])],
     ,
     [enable_plugin_freeipmi="detect"]
 )
@@ -101,6 +101,12 @@ AC_ARG_ENABLE(
     ,
     [enable_x86_sse="yes"]
 )
+AC_ARG_ENABLE(
+    [lto],
+    [AS_HELP_STRING([--disable-lto], [Link Time Optimizations @<:@default enabled@:>@])],
+    ,
+    [enable_lto="detect"]
+)
 
 
 # -----------------------------------------------------------------------------
@@ -145,6 +151,7 @@ AC_CHECK_HEADERS_ONCE([sys/prctl.h])
 # -----------------------------------------------------------------------------
 # operating system detection
 
+AC_MSG_CHECKING([operating system])
 case "$host_os" in
 freebsd*)
     build_target=freebsd
@@ -161,33 +168,7 @@ esac
 AM_CONDITIONAL([FREEBSD], [test "${build_target}" = "freebsd"])
 AM_CONDITIONAL([MACOS], [test "${build_target}" = "macos"])
 AM_CONDITIONAL([LINUX], [test "${build_target}" = "linux"])
-
-
-# -----------------------------------------------------------------------------
-# compiler options
-
-AC_ARG_VAR([SSE_CANDIDATE], [C compiler flags for SSE])
-AS_CASE([$host_cpu],
-    [i?86], [SSE_CANDIDATE="yes"]
-)
-AC_SUBST([SSE_CANDIDATE])
-if test "${SSE_CANDIDATE}" = "yes" -a "${enable_x86_sse}" = "yes"; then
-    opt="-msse2 -mfpmath=sse"
-    AX_CHECK_COMPILE_FLAG($opt, [CFLAGS="$CFLAGS $opt"], [])
-fi
-
-if test "${GCC}" = "yes"; then
-    AC_DEFINE_UNQUOTED([likely(x)], [__builtin_expect(!!(x), 1)], [gcc branch optimization])
-    AC_DEFINE_UNQUOTED([unlikely(x)], [__builtin_expect(!!(x), 0)], [gcc branch optimization])
-else
-    AC_DEFINE_UNQUOTED([likely(x)], [(x)], [gcc branch optimization])
-    AC_DEFINE_UNQUOTED([unlikely(x)], [(x)], [gcc branch optimization])
-fi
-
-if test "${enable_pedantic}" = "yes"; then
-    enable_strict="yes"
-    CFLAGS="${CFLAGS} -pedantic -Wall -Wextra -Wno-long-long"
-fi
+AC_MSG_RESULT([${build_target}])
 
 
 # -----------------------------------------------------------------------------
@@ -199,27 +180,6 @@ CFLAGS="${CFLAGS} ${PTHREAD_CFLAGS}"
 CC="${PTHREAD_CC}"
 
 
-# -----------------------------------------------------------------------------
-# memory allocation library
-
-AC_MSG_CHECKING([for memory allocator])
-TS_CHECK_JEMALLOC
-if test "$has_jemalloc" = "1"; then
-    AC_DEFINE([ENABLE_JEMALLOC], [1], [compile and link with jemalloc])
-    AC_MSG_RESULT([jemalloc])
-else
-    TS_CHECK_TCMALLOC
-    if test "$has_tcmalloc" = "1"; then
-        AC_DEFINE([ENABLE_TCMALLOC], [1], [compile and link with tcmalloc])
-        AC_MSG_RESULT([tcmalloc])
-    else
-        AC_MSG_RESULT([system])
-        AC_C_MALLOPT
-        AC_C_MALLINFO
-    fi
-fi
-
-
 # -----------------------------------------------------------------------------
 # libm
 
@@ -235,7 +195,7 @@ fi
 test "${with_math}" = "yes" -a -z "${MATH_LIBS}" && AC_MSG_ERROR([math required but not found])
 
 AC_MSG_CHECKING([if libm should be used])
-if test "${with_math}" != "no"; then
+if test "${with_math}" != "no" -a ! -z "${MATH_LIBS}"; then
     with_math="yes"
     AC_DEFINE([STORAGE_WITH_MATH], [1], [math usability])
     OPTIONAL_MATH_CFLAGS="${MATH_CFLAGS}"
@@ -258,7 +218,7 @@ PKG_CHECK_MODULES(
 test "${with_zlib}" = "yes" -a "${have_zlib}" != "yes" && AC_MSG_ERROR([zlib required but not found. Try installing 'zlib1g-dev' or 'zlib-devel'.])
 
 AC_MSG_CHECKING([if zlib should be used])
-if test "${with_zlib}" != "no"; then
+if test "${with_zlib}" != "no" -a "${have_zlib}" = "yes"; then
     with_zlib="yes"
     AC_DEFINE([NETDATA_WITH_ZLIB], [1], [zlib usability])
     OPTIONAL_ZLIB_CLFAGS="${ZLIB_CFLAGS}"
@@ -283,6 +243,54 @@ OPTIONAL_UUID_CLFAGS="${UUID_CFLAGS}"
 OPTIONAL_UUID_LIBS="${UUID_LIBS}"
 
 
+# -----------------------------------------------------------------------------
+# compiler options
+
+AC_ARG_VAR([SSE_CANDIDATE], [C compiler flags for SSE])
+AS_CASE([$host_cpu],
+    [i?86], [SSE_CANDIDATE="yes"]
+)
+AC_SUBST([SSE_CANDIDATE])
+if test "${SSE_CANDIDATE}" = "yes" -a "${enable_x86_sse}" = "yes"; then
+    opt="-msse2 -mfpmath=sse"
+    AX_CHECK_COMPILE_FLAG(${opt}, [CFLAGS="${CFLAGS} ${opt}"], [])
+fi
+
+if test "${GCC}" = "yes"; then
+    AC_DEFINE_UNQUOTED([likely(x)], [__builtin_expect(!!(x), 1)], [gcc branch optimization])
+    AC_DEFINE_UNQUOTED([unlikely(x)], [__builtin_expect(!!(x), 0)], [gcc branch optimization])
+else
+    AC_DEFINE_UNQUOTED([likely(x)], [(x)], [gcc branch optimization])
+    AC_DEFINE_UNQUOTED([unlikely(x)], [(x)], [gcc branch optimization])
+fi
+
+if test "${enable_pedantic}" = "yes"; then
+    enable_strict="yes"
+    CFLAGS="${CFLAGS} -pedantic -Wall -Wextra -Wno-long-long"
+fi
+
+
+# -----------------------------------------------------------------------------
+# memory allocation library
+
+AC_MSG_CHECKING([for memory allocator])
+TS_CHECK_JEMALLOC
+if test "$has_jemalloc" = "1"; then
+    AC_DEFINE([ENABLE_JEMALLOC], [1], [compile and link with jemalloc])
+    AC_MSG_RESULT([jemalloc])
+else
+    TS_CHECK_TCMALLOC
+    if test "$has_tcmalloc" = "1"; then
+        AC_DEFINE([ENABLE_TCMALLOC], [1], [compile and link with tcmalloc])
+        AC_MSG_RESULT([tcmalloc])
+    else
+        AC_MSG_RESULT([system])
+        AC_C_MALLOPT
+        AC_C_MALLINFO
+    fi
+fi
+
+
 # -----------------------------------------------------------------------------
 # libcap
 
@@ -296,13 +304,13 @@ PKG_CHECK_MODULES(
             [have_libcap=no]
         )],
         [have_libcap=no]
-    )]
+    )],
     [have_libcap=no]
 )
 test "${with_libcap}" = "yes" -a "${have_libcap}" != "yes" && AC_MSG_ERROR([libcap required but not found.])
 
 AC_MSG_CHECKING([if libcap should be used])
-if test "${with_libcap}" != "no"; then
+if test "${with_libcap}" != "no" -a "${have_libcap}" = "yes"; then
     with_libcap="yes"
     AC_DEFINE([HAVE_CAPABILITY], [1], [libcap usability])
     OPTIONAL_LIBCAP_CLFAGS="${LIBCAP_CFLAGS}"
@@ -387,6 +395,34 @@ AC_MSG_RESULT([${enable_plugin_nfacct}])
 AM_CONDITIONAL([ENABLE_PLUGIN_NFACCT], [test "${enable_plugin_nfacct}" = "yes"])
 
 
+# -----------------------------------------------------------------------------
+# Link-Time-Optimization
+
+if test "${enable_lto}" != "no"; then
+    opt="-flto"
+    AX_CHECK_COMPILE_FLAG(${opt}, [have_lto=yes], [have_lto=no])
+fi
+if test "${have_lto}" = "yes"; then
+    oCFLAGS="${CFLAGS}"
+    CFLAGS="${CFLAGS} -flto ${OPTIONAL_MATH_CLFAGS} ${OPTIONAL_NFACCT_CLFAGS} ${OPTIONAL_ZLIB_CLFAGS} ${OPTIONAL_UUID_CLFAGS} ${OPTIONAL_LIBCAP_CFLAGS} ${OPTIONAL_IPMIMONITORING_CFLAGS}"
+    ac_cv_c_lto_cross_compile="${enable_lto}"
+    test "${ac_cv_c_lto_cross_compile}" != "yes" && ac_cv_c_lto_cross_compile="no"
+    AC_C_LTO
+    CFLAGS="${oCFLAGS}"
+    test "${ac_cv_c_lto}" != "yes" && have_lto="no"
+fi
+test "${enable_lto}" = "yes" -a "${have_lto}" != "yes" && \
+    AC_MSG_ERROR([LTO is required but is not available.])
+AC_MSG_CHECKING([if LTO should be enabled])
+if test "${enable_lto}" != "no" -a "${have_lto}" = "yes"; then
+    enable_lto="yes"
+    CFLAGS="${CFLAGS} -flto"
+else
+    enable_lto="no"
+fi
+AC_MSG_RESULT([${enable_lto}])
+
+
 # -----------------------------------------------------------------------------
 
 AC_DEFINE_UNQUOTED([NETDATA_USER], ["${with_user}"], [use this user to drop privileged])