Mercurial > hg > nginx-quic
view auto/cc/gcc @ 5650:363395795384
SPDY: moved a variable initialization near to its check.
This should prevent attempts of using pointer before it was checked, since
all modern compilers are able to spot access to uninitialized variable.
No functional changes.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Wed, 09 Apr 2014 18:15:32 +0400 |
parents | d9190c84e594 |
children | 80bd391c90d1 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. # gcc 2.7.2.3, 2.8.1, 2.95.4, egcs-1.1.2 # 3.0.4, 3.1.1, 3.2.3, 3.3.2, 3.3.3, 3.3.4, 3.4.0, 3.4.2 # 4.0.0, 4.0.1, 4.1.0 NGX_GCC_VER=`$CC -v 2>&1 | grep 'gcc version' 2>&1 \ | sed -e 's/^.* version \(.*\)/\1/'` echo " + gcc version: $NGX_GCC_VER" have=NGX_COMPILER value="\"gcc $NGX_GCC_VER\"" . auto/define # Solaris 7's /usr/ccs/bin/as does not support "-pipe" CC_TEST_FLAGS="-pipe" ngx_feature="gcc -pipe switch" ngx_feature_name= ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs= ngx_feature_test= . auto/feature CC_TEST_FLAGS= if [ $ngx_found = yes ]; then PIPE="-pipe" fi case "$NGX_MACHINE" in sun4u | sun4v | sparc | sparc64 ) # "-mcpu=v9" enables the "casa" assembler instruction CFLAGS="$CFLAGS -mcpu=v9" ;; esac # optimizations #NGX_GCC_OPT="-O2" #NGX_GCC_OPT="-Os" NGX_GCC_OPT="-O" #CFLAGS="$CFLAGS -fomit-frame-pointer" case $CPU in pentium) # optimize for Pentium and Athlon CPU_OPT="-march=pentium" NGX_CPU_CACHE_LINE=32 ;; pentiumpro | pentium3) # optimize for Pentium Pro, Pentium II and Pentium III CPU_OPT="-march=pentiumpro" NGX_CPU_CACHE_LINE=32 ;; pentium4) # optimize for Pentium 4, gcc 3.x CPU_OPT="-march=pentium4" NGX_CPU_CACHE_LINE=128 ;; athlon) # optimize for Athlon, gcc 3.x CPU_OPT="-march=athlon" NGX_CPU_CACHE_LINE=64 ;; opteron) # optimize for Opteron, gcc 3.x CPU_OPT="-march=opteron" NGX_CPU_CACHE_LINE=64 ;; sparc32) # build 32-bit UltraSparc binary CPU_OPT="-m32" CORE_LINK="$CORE_LINK -m32" NGX_CPU_CACHE_LINE=64 ;; sparc64) # build 64-bit UltraSparc binary CPU_OPT="-m64" CORE_LINK="$CORE_LINK -m64" NGX_CPU_CACHE_LINE=64 ;; ppc64) # build 64-bit PowerPC binary CPU_OPT="-m64" CPU_OPT="$CPU_OPT -falign-functions=32 -falign-labels=32" CPU_OPT="$CPU_OPT -falign-loops=32 -falign-jumps=32" CORE_LINK="$CORE_LINK -m64" NGX_CPU_CACHE_LINE=128 ;; esac CC_AUX_FLAGS="$CC_AUX_FLAGS $CPU_OPT" case "$NGX_GCC_VER" in 2.7*) # batch build CPU_OPT= ;; esac CFLAGS="$CFLAGS $PIPE $CPU_OPT" if [ ".$PCRE_OPT" = "." ]; then PCRE_OPT="-O2 -fomit-frame-pointer $PIPE $CPU_OPT" else PCRE_OPT="$PCRE_OPT $PIPE" fi if [ ".$MD5_OPT" = "." ]; then MD5_OPT="-O2 -fomit-frame-pointer $PIPE $CPU_OPT" else MD5_OPT="$MD5_OPT $PIPE" fi if [ ".$ZLIB_OPT" = "." ]; then ZLIB_OPT="-O2 -fomit-frame-pointer $PIPE $CPU_OPT" else ZLIB_OPT="$ZLIB_OPT $PIPE" fi # warnings # -W requires at least -O CFLAGS="$CFLAGS ${NGX_GCC_OPT:--O} -W" CFLAGS="$CFLAGS -Wall -Wpointer-arith" #CFLAGS="$CFLAGS -Wconversion" #CFLAGS="$CFLAGS -Winline" #CFLAGS="$CFLAGS -Wmissing-prototypes" case "$NGX_GCC_VER" in 3.* | 4.* ) # we have a lot of the unused function arguments CFLAGS="$CFLAGS -Wno-unused-parameter" # 4.2.1 shows the warning in wrong places #CFLAGS="$CFLAGS -Wunreachable-code" ;; *) # we have a lot of the unused function arguments CFLAGS="$CFLAGS -Wno-unused" ;; esac # stop on warning CFLAGS="$CFLAGS -Werror" # debug CFLAGS="$CFLAGS -g" # DragonFly's gcc3 generates DWARF #CFLAGS="$CFLAGS -g -gstabs" if [ ".$CPP" = "." ]; then CPP="$CC -E" fi