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[build] improve (warning) compile flags

This commit is contained in:
Stefan Bühler 2019-08-25 13:16:45 +02:00
parent bdd50b7910
commit afc537d345
2 changed files with 32 additions and 8 deletions
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26
CMakeLists.txt
View File

@ -27,6 +27,21 @@ IF("${CMAKE_BUILD_TYPE}" STREQUAL "")
SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel." FORCE)
ENDIF("${CMAKE_BUILD_TYPE}" STREQUAL "")
OPTION(BUILD_EXTRA_WARNINGS "extra warnings")
# default to ON
set(CMAKE_POSITION_INDEPENDENT_CODE ON CACHE BOOL "Default value for ``POSITION_INDEPENDENT_CODE`` of targets.")
IF(BUILD_EXTRA_WARNINGS)
SET(WARN_CFLAGS "-g -O2 -g2 -Wall -Wmissing-declarations -Wdeclaration-after-statement -Wcast-align -Wsign-compare -Wnested-externs -Wpointer-arith -Wmissing-prototypes -Wshadow -Wno-pointer-sign -Wformat-security")
SET(WARN_LDFLAGS "-g -O2 -g2 -Wall -Wl,--as-needed -Wl,--no-undefined")
# -Wl,--as-needed
# -Werror -Wbad-function-cast -Wmissing-prototypes
ELSE(BUILD_EXTRA_WARNINGS)
SET(WARN_CFLAGS "")
SET(WARN_LDFLAGS "")
ENDIF(BUILD_EXTRA_WARNINGS)
# libev
CHECK_INCLUDE_FILES(ev.h HAVE_EV_H)
@ -61,7 +76,16 @@ INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
add_executable(multiwatch ${MAIN_SOURCE})
ADD_TARGET_PROPERTIES(multiwatch COMPILE_FLAGS "-std=gnu99 -Wall -g -Wshadow -W -pedantic -fPIC -D_GNU_SOURCE")
IF(CMAKE_COMPILER_IS_GNUCC)
SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -Wall -g -Wshadow -W -pedantic")
SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2")
SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0")
SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_WITHDEBINFO} -O2")
ADD_DEFINITIONS(-D_GNU_SOURCE)
ENDIF(CMAKE_COMPILER_IS_GNUCC)
ADD_TARGET_PROPERTIES(multiwatch COMPILE_FLAGS "${WARN_CFLAGS}")
TARGET_LINK_LIBRARIES(multiwatch ${WARN_LDFLAGS})
# libev
TARGET_LINK_LIBRARIES(multiwatch "${EV_LIBRARIES}")

14
configure.ac
View File

@ -23,9 +23,9 @@ PKG_CHECK_MODULES(GLIB, glib-2.0 >= 2.16.0, [
# lib ev
AC_CHECK_HEADERS([ev.h], [], [AC_MSG_ERROR("ev.h not found")])
AC_CHECK_LIB([ev], [ev_time], [
LIBS="-lev ${LIBS}"
AC_DEFINE([HAVE_LIBEV], [1], [ev_time in -lev])
], [AC_MSG_ERROR("libev not found")])
LIBS="-lev ${LIBS}"
AC_DEFINE([HAVE_LIBEV], [1], [ev_time in -lev])
], [AC_MSG_ERROR("libev not found")])
# Checks for header files.
AC_CHECK_HEADERS([stdlib.h unistd.h], [])
@ -41,16 +41,16 @@ if test "${GCC}" = "yes"; then
CFLAGS="${CFLAGS} -Wall -W -Wshadow -pedantic -std=gnu99"
fi
AC_ARG_ENABLE(extra-warnings,
AC_HELP_STRING([--enable-extra-warnings],[enable extra warnings (gcc specific)]),
AC_ARG_ENABLE([extra-warnings],
[AS_HELP_STRING([--enable-extra-warnings],[enable extra warnings (gcc specific)])],
[case "${enableval}" in
yes) extrawarnings=true ;;
no) extrawarnings=false ;;
*) AC_MSG_ERROR(bad value ${enableval} for --enable-extra-warnings) ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-extra-warnings]) ;;
esac],[extrawarnings=false])
if test x$extrawarnings = xtrue; then
CFLAGS="${CFLAGS} -g -O2 -g2 -Wall -Wmissing-declarations -Wdeclaration-after-statement -Wno-pointer-sign -Wcast-align -Winline -Wsign-compare -Wnested-externs -Wpointer-arith -Wl,--as-needed -Wformat-security"
CFLAGS="${CFLAGS} -g -O2 -g2 -Wall -Wmissing-declarations -Wdeclaration-after-statement -Wcast-align -Wsign-compare -Wnested-externs -Wpointer-arith -Wmissing-prototypes -Wshadow -Wno-pointer-sign -Wformat-security -Wl,--as-needed -Wl,--no-undefined"
fi
AC_CONFIG_FILES([Makefile])