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-rw-r--r--src/secp256k1/build-aux/m4/bitcoin_secp.m48
1 files changed, 7 insertions, 1 deletions
diff --git a/src/secp256k1/build-aux/m4/bitcoin_secp.m4 b/src/secp256k1/build-aux/m4/bitcoin_secp.m4
index e6f3470ed7..4ca28f99cf 100644
--- a/src/secp256k1/build-aux/m4/bitcoin_secp.m4
+++ b/src/secp256k1/build-aux/m4/bitcoin_secp.m4
@@ -78,7 +78,13 @@ fi
dnl
AC_DEFUN([SECP_GMP_CHECK],[
if test x"$has_gmp" != x"yes"; then
- AC_CHECK_HEADER(gmp.h,[AC_CHECK_LIB(gmp, __gmpz_init,[has_gmp=yes; GMP_LIBS=-lgmp; AC_DEFINE(HAVE_LIBGMP,1,[Define this symbol if libgmp is installed])])])
+ CPPFLAGS_TEMP="$CPPFLAGS"
+ CPPFLAGS="$GMP_CPPFLAGS $CPPFLAGS"
+ LIBS_TEMP="$LIBS"
+ LIBS="$GMP_LIBS $LIBS"
+ AC_CHECK_HEADER(gmp.h,[AC_CHECK_LIB(gmp, __gmpz_init,[has_gmp=yes; GMP_LIBS="$GMP_LIBS -lgmp"; AC_DEFINE(HAVE_LIBGMP,1,[Define this symbol if libgmp is installed])])])
+ CPPFLAGS="$CPPFLAGS_TEMP"
+ LIBS="$LIBS_TEMP"
fi
if test x"$set_field" = x"gmp" && test x"$has_gmp" != x"yes"; then
AC_MSG_ERROR([$set_field field support explicitly requested but libgmp was not found])