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@ -23,6 +23,26 @@ AM_INIT_AUTOMAKE([-Wall -Wno-portability -Wno-override foreign dist-bzip2 tar-us
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dnl enable with --enable-silent-rules or make V=0 (needs automake >= 1.11)
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m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES])
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dnl @synopsis TRY_CFLAGS [compiler flags]
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dnl @summary check whether compiler supports given C flags and adds them to CFLAGS
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AC_DEFUN([TRY_CFLAGS],
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[dnl
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AC_MSG_CHECKING([if $CC supports $1])
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AC_LANG_PUSH([C])
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ac_try_cflags_saved_cflags="${CFLAGS}"
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CFLAGS="${CFLAGS} $1"
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
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[AC_MSG_RESULT([yes])],
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[
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AC_MSG_ERROR([no])
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CFLAGS="${ac_try_cflags_saved_cflags}"
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]
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)
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AC_LANG_POP([C])
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])
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dnl Checks for programs.
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AC_PROG_CC
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AM_PROG_CC_C_O
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@ -394,7 +414,7 @@ if test "$WITH_FAM" != "no"; then
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LIBS=$FAM_LIBS
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AC_CHECK_FUNCS([FAMNoExists])
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LIBS=$OLD_LIBS
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if test x$FAM_LIBS = x; then
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AC_MSG_ERROR([fam/gamin-headers and/or libs where not found, install them or build with --without-fam])
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fi
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@ -622,7 +642,8 @@ AM_CONDITIONAL(CHECK_WITH_FASTCGI, test "x$fastcgi_found" = xyes)
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dnl check for extra compiler options (warning options)
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if test "${GCC}" = "yes"; then
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CFLAGS="${CFLAGS} -Wall -W -Wshadow -pedantic -std=gnu99"
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TRY_CFLAGS([-Wall -W -Wshadow -pedantic])
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TRY_CFLAGS([-std=gnu99])
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fi
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AC_ARG_ENABLE(extra-warnings,
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@ -634,7 +655,7 @@ AC_ARG_ENABLE(extra-warnings,
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esac],[extrawarnings=false])
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if test x$extrawarnings = xtrue; then
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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"
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TRY_CFLAGS([-g -O2 -g2 -Wall -Wmissing-declarations -Wdeclaration-after-statement -Wcast-align -Winline -Wsign-compare -Wnested-externs -Wpointer-arith -Wl,--as-needed -D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security])
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fi
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dnl build version-id
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