fix: handle EINTR correctly in get_cpu_mask_from_sysfs

[librseq.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 4d045308058db5858419a969cc978e1162bcacc4..4f58d027df1a462ab3e5b3d74dec3d3e47622fc8 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 dnl SPDX-License-Identifier: MIT
 dnl
-dnl Copyright (C) 2021 EfficiOS, Inc.
+dnl SPDX-FileCopyrightText: 2021 EfficiOS, Inc.
 dnl
 dnl Process this file with autoconf to produce a configure script.
 
@@ -80,6 +80,44 @@ AC_TYPE_SIZE_T
 AC_TYPE_UINT32_T
 AC_TYPE_UINT64_T
 
+# Detect warning flags supported by the C compiler and append them to
+# WARN_CFLAGS.
+m4_define([WARN_FLAGS_LIST], [ dnl
+  -Wall dnl
+  -Wextra dnl
+  -Wmissing-prototypes dnl
+  -Wmissing-declarations dnl
+  -Wnull-dereference dnl
+  -Wundef dnl
+  -Wshadow dnl
+  -Wjump-misses-init dnl
+  -Wsuggest-attribute=format dnl
+  -Wtautological-constant-out-of-range-compare dnl
+  -Wnested-externs dnl
+  -Wwrite-strings dnl
+  -Wformat=2 dnl
+  -Wstrict-aliasing dnl
+  -Wmissing-noreturn dnl
+  -Winit-self dnl
+  -Wduplicated-cond dnl
+  -Wduplicated-branches dnl
+  -Wlogical-op dnl
+  -Wredundant-decls dnl
+])
+
+# Pass -Werror as an extra flag during the test: this is needed to make the
+# -Wunknown-warning-option diagnostic fatal with clang.
+AC_LANG_PUSH([C])
+AX_APPEND_COMPILE_FLAGS([WARN_FLAGS_LIST], [WARN_CFLAGS], [-Werror])
+AC_LANG_POP([C])
+
+AC_LANG_PUSH([C++])
+AX_APPEND_COMPILE_FLAGS([WARN_FLAGS_LIST], [WARN_CXXFLAGS], [-Werror])
+AC_LANG_POP([C++])
+
+AE_IF_FEATURE_ENABLED([Werror], [WARN_CFLAGS="${WARN_CFLAGS} -Werror"])
+AE_IF_FEATURE_ENABLED([Werror], [WARN_CXXFLAGS="${WARN_CXXFLAGS} -Werror"])
+
 
 ##                     ##
 ## C++ compiler checks ##
@@ -100,10 +138,6 @@ AC_CHECK_HEADERS([ \
        sys/time.h \
 ])
 
-AC_CHECK_HEADER([linux/rseq.h], [],
-       [AC_MSG_ERROR([Cannot find 'linux/rseq.h'.])
-])
-
 
 ##                 ##
 ## Programs checks ##
@@ -148,6 +182,55 @@ AC_CHECK_LIB([dl], [dlopen], [
 ])
 AC_SUBST(DL_LIBS)
 
+PKG_CHECK_MODULES([SECCOMP], [libseccomp],
+  [
+    dnl PKG_CHECK_MODULES defines SECCOMP_LIBS
+    have_seccomp=yes
+  ],
+  [
+    have_seccomp=no
+  ])
+
+
+##                             ##
+## Optional features selection ##
+##                             ##
+
+# Enabled by default
+AE_FEATURE_DEFAULT_ENABLE
+AE_FEATURE([numa],[disable NUMA support])
+
+# When given, add -Werror to WARN_CFLAGS and WARN_CXXFLAGS.
+# Disabled by default
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([Werror], [Treat compiler warnings as errors.])
+
+##                                          ##
+## Check for optional features dependencies ##
+##                                          ##
+
+# The numa integration requires libnuma
+AE_IF_FEATURE_ENABLED([numa], [
+  AC_CHECK_LIB([numa], [numa_available], [
+    AC_DEFINE([HAVE_LIBNUMA], [1], [Define to 1 if libnuma is available.])
+  ], [
+    AC_MSG_ERROR([dnl
+libnuma is not available. Please either install it (e.g. libnuma-dev) or use
+[LDFLAGS]=-Ldir to specify the right location, or use --disable-numa configure
+argument to disable NUMA support.
+    ])
+  ])
+])
+
+
+##                                                                          ##
+## Set automake variables for optional feature conditionnals in Makefile.am ##
+##                                                                          ##
+
+AM_CONDITIONAL([ENABLE_SHARED], [test "x${enable_shared}" = "xyes"])
+AM_CONDITIONAL([ENABLE_SECCOMP], [test "x${have_seccomp}" = "xyes"])
+AM_CONDITIONAL([ENABLE_NUMA], AE_IS_FEATURE_ENABLED([numa]))
+
 ##                                             ##
 ## Substitute variables for use in Makefile.am ##
 ##                                             ##
@@ -161,10 +244,10 @@ AC_SUBST([RSEQ_LIBRARY_VERSION], [rseq_lib_version])
 AM_CPPFLAGS="-I\$(top_builddir)/include -I\$(top_srcdir)/include -include config.h"
 AC_SUBST(AM_CPPFLAGS)
 
-AM_CFLAGS="-Wall -Wextra $PTHREAD_CFLAGS"
+AM_CFLAGS="$WARN_CFLAGS $PTHREAD_CFLAGS"
 AC_SUBST(AM_CFLAGS)
 
-AM_CXXFLAGS="-Wall -Wextra $PTHREAD_CFLAGS"
+AM_CXXFLAGS="$WARN_CXXFLAGS $PTHREAD_CFLAGS"
 AC_SUBST(AM_CXXFLAGS)
 
 
@@ -181,6 +264,7 @@ AC_CONFIG_FILES([
        src/librseq.pc
        tests/Makefile
        tests/utils/Makefile
+       tests/unit/Makefile
 ])
 
 AC_OUTPUT
@@ -201,6 +285,8 @@ AS_ECHO
 PPRINT_SUBTITLE([Features])
 
 PPRINT_PROP_STRING([Target architecture], $host_cpu)
+AE_IS_FEATURE_ENABLED([numa]) && value=1 || value=0
+PPRINT_PROP_BOOL([NUMA], $value)
 
 report_bindir="`eval eval echo $bindir`"
 report_libdir="`eval eval echo $libdir`"