From d00ae5af737aa553cb4e6d903eda0537086776bb Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 5 Oct 2017 20:33:27 +0000
Subject:  Better *FLAGS management

---
 configure | 37 +++++++++++++++++++++++--------------
 1 file changed, 23 insertions(+), 14 deletions(-)

(limited to 'configure')

diff --git a/configure b/configure
index 2a14808..c1d807f 100755
--- a/configure
+++ b/configure
@@ -95,7 +95,7 @@ stripdir () {
 tryflag () {
   echo "checking whether compiler accepts $2 ..."
   echo "typedef int x;" > "$tmpc"
-  if $CC_AUTO $CPPFLAGS_AUTO $CFLAGS_AUTO "$2" -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+  if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST "$2" -c -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
     echo "  ... yes"
     eval "$1=\"\${$1} \$2\""
     eval "$1=\${$1# }"
@@ -109,7 +109,7 @@ tryflag () {
 tryldflag () {
   echo "checking whether linker accepts $2 ..."
   echo "typedef int x;" > "$tmpc"
-  if $CC_AUTO $CFLAGS_AUTO $LDFLAGS_AUTO -nostdlib "$2" -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
+  if $CC_AUTO $CFLAGS_AUTO $CFLAGS $CFLAGS_POST $LDFLAGS_AUTO $LDFLAGS $LDFLAGS_POST -nostdlib "$2" -o /dev/null "$tmpc" >/dev/null 2>&1 ; then
     echo "  ... yes"
     eval "$1=\"\${$1} \$2\""
     eval "$1=\${$1# }"
@@ -124,11 +124,17 @@ tryldflag () {
 # Actual script
 
 CC_AUTO=
-CFLAGS_AUTO="$CFLAGS"
-CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -O2 $CPPFLAGS"
-LDFLAGS_AUTO="$LDFLAGS"
-LDFLAGS_SHARED=-shared
+CPPFLAGS_AUTO="-D_POSIX_C_SOURCE=200809L -D_XOPEN_SOURCE=700 -iquote src/include-local -Isrc/include"
+CPPFLAGS_POST="$CPPFLAGS"
+CPPFLAGS=
+CFLAGS_AUTO="-pipe -Wall"
+CFLAGS_POST="$CFLAGS"
+CFLAGS=-O2
+LDFLAGS_AUTO=
+LDFLAGS_POST="$LDFLAGS"
+LDFLAGS=
 LDFLAGS_NOSHARED=
+LDFLAGS_SHARED=-shared
 prefix=
 exec_prefix='$prefix'
 dynlibdir='$prefix/lib'
@@ -269,7 +275,7 @@ test -n "$CC_AUTO" || { echo "$0: cannot find a C compiler" ; exit 1 ; }
 echo "  ... $CC_AUTO"
 echo "checking whether C compiler works... "
 echo "typedef int x;" > "$tmpc"
-if $CC_AUTO $CPPFLAGS_AUTO $CFLAGS_AUTO -c -o /dev/null "$tmpc" 2>"$tmpe" ; then
+if $CC_AUTO $CPPFLAGS_AUTO $CPPFLAGS $CPPFLAGS_POST $CFLAGS_AUTO $CFLAGS $CFLAGS_POST -c -o /dev/null "$tmpc" 2>"$tmpe" ; then
   echo "  ... yes"
 else
   echo "  ... no. Compiler output follows:"
@@ -303,12 +309,12 @@ timer_lib=$(cat $sysdeps/timer.lib)
 util_lib=$(cat $sysdeps/util.lib)
 
 tryflag CFLAGS_AUTO -std=c99
-tryflag CFLAGS_AUTO -fomit-frame-pointer
+tryflag CFLAGS -fomit-frame-pointer
 tryflag CFLAGS_AUTO -fno-exceptions
 tryflag CFLAGS_AUTO -fno-unwind-tables
 tryflag CFLAGS_AUTO -fno-asynchronous-unwind-tables
-tryflag CPPFLAGS_AUTO -Wa,--noexecstack
-tryflag CFLAGS_AUTO -fno-stack-protector
+tryflag CFLAGS_AUTO -Wa,--noexecstack
+tryflag CFLAGS -fno-stack-protector
 tryflag CPPFLAGS_AUTO -Werror=implicit-function-declaration
 tryflag CPPFLAGS_AUTO -Werror=implicit-int
 tryflag CPPFLAGS_AUTO -Werror=pointer-sign
@@ -327,7 +333,7 @@ if $evenmorestatic ; then
 fi
 
 if $shared ; then
-  tryldflag LDFLAGS_AUTO -Wl,--hash-style=both
+  tryldflag LDFLAGS -Wl,--hash-style=both
 fi
 
 LDFLAGS_SHARED="${LDFLAGS_SHARED}${addlibdpath}"
@@ -379,9 +385,12 @@ TIMER_LIB := ${timer_lib}
 UTIL_LIB := ${util_lib}
 
 CC := ${CC_AUTO##${cross}}
-CFLAGS := $CFLAGS_AUTO
-CPPFLAGS := $CPPFLAGS_AUTO
-LDFLAGS := $LDFLAGS_AUTO
+CPPFLAGS_AUTO := $CPPFLAGS_AUTO
+CPPFLAGS := $CPPFLAGS $CPPFLAGS_POST
+CFLAGS_AUTO := $CFLAGS_AUTO
+CFLAGS := $CFLAGS $CFLAGS_POST
+LDFLAGS_AUTO := $LDFLAGS_AUTO
+LDFLAGS := $LDFLAGS $LDFLAGS_POST
 LDFLAGS_SHARED := $LDFLAGS_SHARED
 LDFLAGS_NOSHARED := $LDFLAGS_NOSHARED
 CROSS_COMPILE := $cross
-- 
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