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ngspice
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configure.ac, support external CFLAGS specification 

allow to overide CFLAGS like this:
  CFLAGS=something ./configure
  ./configure CFLAGS=something

empty CFLAGS are allowed too, like this
  CFLAGS="" ./configure
  ./configure CFLAGS=""

otherwise use our longish builtin default CFLAGS
  ./configure
This commit is contained in:
rlar 2014-04-28 20:31:18 +02:00
parent 6f89395d8a
commit 9a827a68b9
1 changed files with 21 additions and 14 deletions
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31
configure.ac
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@ -32,6 +32,10 @@ AC_CONFIG_HEADER([src/include/ngspice/config.h])
AM_INIT_AUTOMAKE([-Wall -Werror nostdinc]) AM_INIT_AUTOMAKE([-Wall -Werror nostdinc])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])]) m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
ext_CFLAGS="${CFLAGS+yes}"
AC_PROG_CC
m4_ifdef([AM_PROG_AR], [AM_PROG_AR]) m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
AC_SUBST([AM_CPPFLAGS], ['-I. -I$(srcdir) -I$(top_builddir)/src/include']) AC_SUBST([AM_CPPFLAGS], ['-I. -I$(srcdir) -I$(top_builddir)/src/include'])
@ -197,29 +201,32 @@ AM_MAINTAINER_MODE
# Compiler checks # Compiler checks
# --------------- # ---------------
ext_CFLAGS="$CFLAGS"
AC_PROG_CC
# Work on compiler options according to system: # Work on compiler options according to system:
# Set default CFLAGS - only use -Wall if we have gcc # Set default CFLAGS - only use -Wall if we have gcc
# the above AC_PROG_CC may set CFLAGS to "-O2 -g" # the above AC_PROG_CC may set CFLAGS to "-O2 -g"
if test "x$enable_debug" = xno; then if test "x$ext_CFLAGS" != xyes; then
if test "x$enable_debug" = xno; then
AC_MSG_WARN([Removing debugging option!])
if test "x$GCC" = xyes; then if test "x$GCC" = xyes; then
AC_MSG_WARN([Removing debugging option!]) CFLAGS="-O2 -s"
CFLAGS="-O2 -Wall -Wextra -Wmissing-prototypes -Wstrict-prototypes -Wnested-externs -Wold-style-definition -Wredundant-decls -Wconversion -s $ext_CFLAGS"
else else
AC_MSG_WARN([Removing debugging option!]) CFLAGS="-O2"
CFLAGS="-O2 $ext_CFLAGS"
fi fi
else else
AC_DEFINE([NGDEBUG], [1], [Compile with debug info]) AC_DEFINE([NGDEBUG], [1], [Compile with debug info])
if test "x$GCC" = xyes; then if test "x$GCC" = xyes; then
CFLAGS="-g -O1 -Wall -Wextra -Wmissing-prototypes -Wstrict-prototypes -Wnested-externs -Wold-style-definition -Wredundant-decls -Wconversion $ext_CFLAGS" CFLAGS="-g -O1"
else else
CFLAGS="-g $ext_CFLAGS" CFLAGS="-g"
fi fi
fi
if test "x$GCC" = xyes; then
CFLAGS="$CFLAGS -Wall -Wextra -Wmissing-prototypes -Wstrict-prototypes -Wnested-externs -Wold-style-definition -Wredundant-decls -Wconversion"
fi
fi fi
# the profiling option # the profiling option